ANALYZING POWER LOSSES AND THEIR EFFECTS IN COMPLEX POWER SYSTEMS
|
|
- Anna Lloyd
- 6 years ago
- Views:
Transcription
1 ANALYZING OWR LOSSS AND THIR FFCTS IN COMLX OWR SYSTMS S. Stoll, U. Konigorski Institute of lectrical Information Technology, Clausthal University of Technology, Leibnizstr. 28, Clausthal-Zellerfeld, Germany hone: / , Fax: -3197; ABSTRACT The key prerequisite for improving system performance is understanding operating characteristics including losses. Therefore, a method has been developed that is especially designed to analyze the performance of power systems. The focus is on the system s power flows power sources and sinks that connect to the environment and power conversion mechanisms for power transfer between different system parts. Included in the analysis are power loss mechanisms that are required for prediction of system efficiency and power storage that compensates for temporary imbalance. The performance data from an operating V/Hybrid ower System is used to introduce the analysis method. The straightforward analysis allows visualization of power flows and power losses and the results match closely with actual performance. With a performance-certified model, different scenarios of configuration or operation changes can be analyzed. INTRODUCTION The authors are active in modelling, analyzing and controlling power systems for renewable energy and automotive applications. In their work, they have discovered that no suitable analysis tools are available to qualify the performance results of different operation strategies in regard to system efficiency. Therefore, a modelling approach for power systems has been developed to fill this gap. Results show that the developed method can provide accurate performance predictions as well as serve as a test bed for evaluating operational scenarios. The approach is described here. TH MODLLING AROACH ower systems can be described by few principal functions if the focus lies on the analysis of the system performance. Modules, here referred to as ower Cells, may be combined to represent even complex systems containing various types of power. In the system model, a power cell represents the mechanisms related to one form of power like electric DC power or thermal power. In figure 1, a power cell is shown with the focus on the external interfaces, while the internal mechanisms are only indicated. In figure 2, the internal mechanisms are represented in more detail. The entire system is represented by a combination of power cells that are connected to each other by the power transfer lines that go in vertical direction. They are arbitrarily defined as in (top) and out (bottom) and may be uni- or bidirectional. The power transfer mechanisms on the left side represent
2 in L out Figure 1: A ower Cell the power flow across the borders of the entire system s boundary. The transfer to the outside are loads, and the transfer from the outside are power generators. To the right, the power losses L that occur inside the power cell are shown (the internal connections are left out in the power cell to avoid confusion). These losses may be power flows to the system s outside (thus similar to a load) or they may affect other system parts. To the right also, the energy level as a measure of the stored power is shown. In contrast to the other connectors, it does not interact with other parts but serves as an important indicator of the inside system state. in age L stor L load L L gen eration ersion L conv out Figure 2: A ower Cell Details ach power cell contains the principal processes including the loss mechanisms related to one form of power (fig. 2). The and eration blocks represent the functions how the power is finally transferred to and from the outside. The power flow between power cells is controlled by the ersion which could be represented in either of the connected power cells. Often, the conversion is clearly associated with one form of power while otherwise the choice is arbitrary. The sum of the powers (the circle) can be considered a bus where all power flows from individual power cell come together. In case of an imbalance of in- and outgoing powers, the difference is stored / retrieved from age. The energy level shows the amount of stored power that potentially can be taken out. ach component may represent one or several different devices and in case the function is not used in a particular system, it may be left out. MODL OF A V/HYBRID OWR SYSTM The SunWize 1200-Watt V Hybrid System (SW1200) located at the research facility of the Southwest Technology Development Institute in New Mexico, USA had been analyzed and tested for several years
3 [2]. Collected performance data from October are used for demonstration of the proposed method. The V Hybrid System The SW1200 is a compact, skid-mounted, stand-alone electrical power supply that consists of a Siemens 1200W V array, an AT power center with charge controller, a Trojan 25 kwh battery bank (1042 Ah at 24 V), a Trace ngineering 4 kw bi-directional sine-wave Inverter and a Kohler 6.3 kw propanefueled generator. Controllable resistive ac loads are used to impose different load profiles. erally, it is loaded with about 6 kwh per day to represent a small residential application in the USA. Typically, the annual load is met with about 70% of the energy from solar and about 30% from the generator. The energy management system is designed to operate the V/hybrid system as an efficient uninterruptible power supply. The goals are to maximize use of photovoltaic energy, minimize backup generator run-time, and maintain battery SOC within a range that will produce maximum battery life. Advanced energy management strategies are currently under design [1] using the presented method for evaluation. The SW1200 Model The model of the SW1200 is shown in figure 3. The system itself consists of the DC and AC subsystems. A fictitious air-conditioning system is used as an example for detailed load modelling. Cool House L Aircon Aircon L L rec L inv L AC Inv AC Bat L bat Bat V L V L DC Figure 3: Model of the SW1200 DC Figure 4: Graphic Representation of ower Flows in the SW1200 The DC power cell consists of the V generator and the battery storage. The V system is modelled as a constant factor that is related to the V array efficiency. Then, the generated V power is the incoming irradiation power times this factor. The battery is an integrator of the incoming / outgoing power with conversion losses caused by the internal resistance in the form: const 2 and gassing near 1 The data from October 1997 have been selected because only very few hours of data are missing. Using data of other months give comparable results
4 full state of charge in the form e const ( n) when charging given the nominal battery size n and the actual amount of stored power (SOC) 2. The AC power cell consists of the inverter (conversion), the backup generator (here referred to as generator), and the AC loads. The AC part does not have its own storage (at least no significant one). Therefore, the inverter balances the power by transferring power to the DC cell and using the battery as storage. The inverter as an interface between AC and DC could be included in either power cell, AC is chosen arbitrarily. The inverter is described by a 50W constant loss and an 87% inverting / rectifying efficiency in any operation point. During generator operation, the fuel use is arbitrarily considered to be a linear function between 1 fuel unit when idling and 2 fuel units at rated power. The operation strategy is not regarded in this model. The AC load block represents the AC loads with one exception, the fictitious air- conditioning system, which is regarded separately for demonstration. The air-conditioning system is modelled structurally. It contains a converter that converts AC power to cooling power, thus it is the air-conditioner itself. The storage is the cooling storage capacity of the object that is to be cooled (e.g. a house) and the load is the transfer of the cooling power through the isolation, openings, etc. which means the mechanisms that heat up the system. RFORMANC ANALYSIS 3 A visual summary of the power flows and power losses over one month of operation (10/1997) is shown in figure 4. The air-conditioning system is excluded as the analysis has been done without it. In the figure, the principal power flows are shown that take place inside the system where the thickness of the lines represents the relative amount of power flowing. The monthly total of the AC load is 195kWh which is supplied by the V system (198kWh) and the backup generator (80kWh). The system efficiency may be calculated as 71% (the differences in the battery SOC in the beginning and in the end of the month are accounted for). It can be seen, that the generator power is in part directly consumed without losses - shown by a direct (thin) arrow. If the generator power is not directly consumed, it is converted / rectified to DC power which includes losses from rectification L rec. On the DC side, the power is stored in the battery where losses L bat occur. At another point in time, the power is taken out and inverted (with inverter losses L inv ) before supplying the load. Thus the operating sequence recharging the battery with the backup generator includes three consecutive procedures with losses. The direct load supply by V includes inverting losses (direct path to the load) or if the supply is indirect, battery losses occur additionally. What special information is provided using this method? The simulation shows that more than 80% of the system losses resulted through inverter operation while battery losses have been comparatively small. About half of these losses are caused by the 50W permanent loss that can hardly be avoided while an improved operation strategy may reduce the other losses. An analysis of generator operation options shows that increased system efficiency does not automatically mean increased fuel efficiency..g. a direct load supply by the generator when the battery is fully charged results in low losses in the electric system while the generator may only be partially loaded and thus inefficient. 2 The models represent just the principal functionality and a more detailed analysis (as is generally done) could be provided for performance predictions. For this purpose, though, the models proved sufficiently accurate simulated and measured values stayed within measurement tolerance. 3 Details of the analysis will be published soon.
5 The route of power flows and losses can be visualized. This may be useful especially in more complex systems to help detect inefficiencies. The amount of stored power given as energy levels is known for analysis. This way, system efficiency can be calculated more accurately accounting for the different energy levels. In this case, the difference of the battery SOC between the beginning and the end of the regarded time period is known and can be considered when calculating efficiencies. By calculation and visualization of scenarios, behaviour on hardware or operation changes may be predicted with a good accuracy. Scenarios As example, several possible scenarios of power flow to supply a 100Wh load (one hour operation of a 100W light bulb) are shown in addition to normal operation. Of course, during normal operation the scenarios will not occur as distinct as may be suggested but with their knowledge, e.g. preferable options may be extracted for performance enhancement. For simplified comparison, all losses are considered to be 20% of the power going through in the cases shown in below example scenarios. The visualization can be done in a very similar way as shown for the performance analysis (fig. 4). The backup generator supplies the load directly so that no losses take place (direct connection between and ). The backup generator provides the power indirectly so that the generator power is rectified (20% loss), stored in the battery (20% loss) and inverted (20% loss) before reaching the load. As result, the generator has to produce 195Wh. Ideally, V power is used directly for the load supply which results in only 20% losses (by inverting) or a necessary production of 125W. A worst-case scenario for the operation of the light bulb may be as follows: First, the backup generator provides the load with the power temporarily stored in the battery (195Wh). In addition, the light bulb is considered to be 20% efficient which means 80Wh power losses by heat. If the house is cooled by an air-conditioning system, this heat energy may have to be dissipated, as well. Then, the generator needs to supply additional 80Wh plus losses which would result to 195Wh. So, 390Wh electric power have to be produced just to receive 20W light. CONCLUSION A method for the performance analysis of power systems is presented in this paper. This modular approach focuses on power flows and losses as well as the storage of power inside the system. The method is introduced using a V/Hybrid system for which very detailed analysis data are available. Results of a performance analysis using this method indicate its strengths compared to the classic approach. In addition, the method allows to study and visualize scenarios when changes in hardware or operation take place. While the results may seem rather obvious for the example system, the method allows good insight when dealing with more complex systems. RFRNCS 1. Wiles, J.; Stoll, S. Final Test Report...: Sunwize nergy Corporation 1200 Watt Hybrid ower System. SWTDI, Las Cruces, NM, USA, Stoll, S.; Konigorski, U.; Wiles, J.; Risser, V. Rapid-rototyping Methods for the design of nergy Management Strategies 17th uropean V Solar nergy Conference, WI, München 2001
Design Modeling and Simulation of Supervisor Control for Hybrid Power System
2013 First International Conference on Artificial Intelligence, Modelling & Simulation Design Modeling and Simulation of Supervisor Control for Hybrid Power System Vivek Venkobarao Bangalore Karnataka
More informationCode Compliance. Perspectives on PV. Back to the Grid, Designing PV Systems for
Perspectives on PV A series of articles on photovoltaic (PV) power systems and the National Electrical Code by John Wiles Back to the Grid, Designing PV Systems for Code Compliance 20 IAEI NEWS January.February
More informationPower Management Solution: Constant Voltage (CV) Pulse Charging of Hybrid Capacitors
VISHAY BCCOMPONENTS www.vishay.com Aluminum Capacitors By Gerald Tatschl ENYCAP TM 196 HVC SERIES GENERAL INFORMATION In order to fully utilize the performance of ENYCAP 196 HVC capacitors, a reliable
More informationMobile Renewable House
Mobile Renewable House M.F. Serincan, M. Eroglu, M.S. Yazici This document appeared in Detlef Stolten, Thomas Grube (Eds.): 18th World Hydrogen Energy Conference 2010 - WHEC 2010 Parallel Sessions Book
More informationAutonomous Power Supply Uninterruptible Power Supply (UPS)
1.2 kw Fuel Cell Training System for System Design and Hybridization Autonomous Power Supply Uninterruptible Power Supply (UPS) Hands-on Instruction for Fuel Cell Technology The is a comprehensive tool
More informationA Comparison of Typical UPS Designs in Today s Markets
A Comparison of Typical UPS Designs in Today s Markets An Alpha Technologies White Paper by Kevin Binnie, Senior Product Portfolio Manager March 1, 2011 2 White Paper: A Comparison of Typical UPS Designs
More informationBehaviour of battery energy storage system with PV
IJISET - International Journal of Innovative Science, Engineering & Technology, Vol. Issue 9, September 015. ISSN 348 7968 Behaviour of battery energy storage system with PV Satyendra Vishwakarma, Student
More informationMathematical Model of Electric Vehicle Power Consumption for Traveling and Air-Conditioning
Journal of Energy and Power Engineering 9 (215) 269-275 doi: 1.17265/1934-8975/215.3.6 D DAVID PUBLISHING Mathematical Model of Electric Vehicle Power Consumption for Traveling and Air-Conditioning Seishiro
More information32 IAEI NEWS March. April
32 IAEI NEWS March. April 2013 www.iaei.org PV Perspectives by John Wiles perspectives on pv Batteries in PV Systems Electrical power outages are becoming more common in recent times with man-made and
More informationDYNAMIC MODELING RESIDENTIAL DATA AND APPLICATION
DYNAMIC MODELING RESIDENTIAL DATA AND APPLICATION The introduction of the reversible or regenerative fuel cell (RFC) provides a new component that is analogous to rechargeable batteries and may serve well
More informationAmpd Silo. Energy Storage System. Maintenance-free Li-ion energy storage for mission critical backup. Power to Empower
Energy Storage System Maintenance-free Li-ion energy storage for mission critical backup Power to Empower State-of-the-art Energy Storage Backup for mission critical applications Ampd Silo is an ultra-compact,
More informationDesigning Stand Alone Systems. Overview, components and function, Elements in Design
Designing Stand Alone Systems Overview, components and function, Elements in Design What Stand Alone System Does Loads that are Reasonable for a Stand Alone System to Power: Yes or No Dishwasher? Refrigerator
More informationInterSolar Solar Hybrid Mini-grids for Telecom and Village power supply. Elwin Veenendaal Managing Director elgris
InterSolar 2011 Solar Hybrid Mini-grids for Telecom and Village power supply Elwin Veenendaal Managing Director elgris Agenda Introduction elgris What is a (mini)-grid Product range Telecom solutions Village
More informationQuestions from the AHJ To Fuse or Not to Fuse?
Questions from the AHJ To Fuse or Not to Fuse? by John Wiles Nearly everyone agrees that the National Electrical Code gets better with every edition. However, new technologies like photovoltaic (PV) power
More informationOff-grid Commercial Micro-grid System Provides Energy Storage For Resort In India
Off-grid Commercial Micro-grid System Provides Energy Storage For Resort In India Energy Access Practitioner Network Webinar on Energy Storage July 18, 2013 Romina Arcamone Garcia Product Manager Renewable
More informationSitePro UPS 400Vac / CE. GE Consumer & Industrial August 2004
SitePro UPS 400Vac / CE GE Consumer & Industrial August 2004 Applications Computer and Data Centers Server Farms Process Control Broadcasting / SAT Systems Radar control installations Air traffic control
More informationIf you wish to receive information about our ongoing projects please contact us at: Info@livenergysolutions.com Sales@livenergysolutions.com GreenerEnergy@Live.com UNI-SOLAR Wins Solar Panel Shoot-Out
More informationINVESTIGATION AND PERFORMANCE ANALYSIS OF MULTI INPUT CONVERTER FOR THREE PHASE NON CONVENTIONAL ENERGY SOURCES FOR A THREE PHASE INDUCTION MOTOR
Man In India, 96 (12) : 5421-5430 Serials Publications INVESTIGATION AND PERFORMANCE ANALYSIS OF MULTI INPUT CONVERTER FOR THREE PHASE NON CONVENTIONAL ENERGY SOURCES FOR A THREE PHASE INDUCTION MOTOR
More informationDesign of Active and Reactive Power Control of Grid Tied Photovoltaics
IJCTA, 9(39), 2016, pp. 187-195 International Science Press Closed Loop Control of Soft Switched Forward Converter Using Intelligent Controller 187 Design of Active and Reactive Power Control of Grid Tied
More informationA Smart Mobile PV-Wind Hybrid System Prototype for isolated electrification. Abstract
The 2 nd RMUTP International Conference 2010 Page 148 A Smart Mobile PV-Wind Hybrid System Prototype for isolated electrification Krisada Phrompinit, Boonyang Plangklang, Krischonme Bhumkittipich, and
More informationAEC PHOTOVOLTAIC TEST FACILITY FIRST YEAR TEST DATA
AEC PHOTOVOLTAIC TEST FACILITY FIRST YEAR TEST DATA James Krumsick Alternative Energy Consortium 100 West 13 th Eugene, OR 97405 e-mail: jpkrumsick@aol.com Frank Vignola Rich Kessler University of Oregon
More information2017 Southeastern Tri Regional SAME Training Symposium Microgrids What are they, lessons learned 8/30/2017 Dan Dorn Eaton Corp
MICROGRIDS 2017 Southeastern Tri Regional SAME Training Symposium Microgrids What are they, lessons learned 8/30/2017 Dan Dorn Eaton Corp. Structural solutions and wiring devices Engineering services Eaton:
More informationPower Management with Solar PV in Grid-connected and Stand-alone Modes
Power Management with Solar PV in Grid-connected and Stand-alone Modes Sushilkumar Fefar, Ravi Prajapati, and Amit K. Singh Department of Electrical Engineering Institute of Infrastructure Technology Research
More informationImpact of Reflectors on Solar Energy Systems
Impact of Reflectors on Solar Energy Systems J. Rizk, and M. H. Nagrial Abstract The paper aims to show that implementing different types of reflectors in solar energy systems, will dramatically improve
More informationOff-grid Power for Wireless Networks. Training materials for wireless trainers
Off-grid Power for Wireless Networks Training materials for wireless trainers Goals Provide a general view of the parts that comprise a solar photovoltaic system for telecommunication Understand the variables
More informationGenerator Efficiency Optimization at Remote Sites
Generator Efficiency Optimization at Remote Sites Alex Creviston Chief Engineer, April 10, 2015 Generator Efficiency Optimization at Remote Sites Summary Remote generation is used extensively to power
More informationThe evaluation of endurance running tests of the fuel cells and battery hybrid test railway train
The evaluation of endurance running tests of the fuel cells and battery hybrid test railway train K.Ogawa, T.Yamamoto, T.Hasegawa, T.Furuya, S.Nagaishi Railway Technical Research Institute (RTRI), TOKYO,
More informationInternational Journal of Advance Research in Engineering, Science & Technology
Impact Factor (SJIF): 4.54 International Journal of Advance Research in ngineering, Science & Technology e-issn: 393-9877, p-issn: 394-444 Volume 4, Issue 4, April-17 ltracapacitor selection and design
More informationA Study of Lead-Acid Battery Efficiency Near Top-of-Charge and the Impact on PV System Design
A Study of Lead-Acid Battery Efficiency Near Top-of-Charge and the Impact on PV System Design John W. Stevens and Garth P. Corey Sandia National Laboratories, Photovoltaic System Applications Department
More informationInitial Project and Group Identification Document. Senior Design I EEL Off-Grid Clean Energy Power Generation
Initial Project and Group Identification Document Senior Design I EEL 4914 Off-Grid Clean Energy Power Generation Group Pablo Pozo (Electrical Engineer) Patrick O Connor (Electrical Engineer) Cory Bianchi
More informationEnergy 142 NABCEP (North American Board of Certified Energy Practitioners) Entry Level Test Review. System Components
Energy 142 NABCEP (North American Board of Certified Energy Practitioners) Entry Level Test Review System Components ESS 034 Advanced Photovoltaic Systems 1 Lesson Plan Safety Review Any Questions? NABCEP
More informationMicrogrids Outback Power Technologies
Microgrids Outback Power Technologies Microgrids - Definition EPRI defines microgrids as a power system with distributed resources serving one or more customers that can operate as an independent electrical
More informationOPTIMIZATION OF SOLAR-WIND-DIESEL HYBRID POWER SYSTEM DESIGN USING HOMER. I. A. Wibowo *, and D.Sebayang
OPTIMIZATION OF SOLAR-WIND-DIESEL HYBRID POWER SYSTEM DESIGN USING HOMER I. A. Wibowo *, and D.Sebayang Department of Mechanical Engineering, Faculty of Engineering, Mercu Buana University Indonesia Abstract
More informationStand-alone PV power supply for developing countries
Stand-alone PV power supply for developing countries Frederick M. Ishengoma Dept. of Electrical Power Eng. NTNU October 25, 2002 ENO Presentation 1 Access to Grid electricity Estimated 2 billion people
More informationPower Management Solution: Constant Voltage (CV) Pulse Charging of Hybrid Capacitors
VISHAY BCCOMPONENTS www.vishay.com Aluminum Capacitors By Gerald Tatschl ENYCAP TM 196 HVC SERIES GENERAL INFORMATION Rechargeable energy storage solutions are of high interest because of their flexibility,
More informationDynamic Modelling of Hybrid System for Efficient Power Transfer under Different Condition
RESEARCH ARTICLE OPEN ACCESS Dynamic Modelling of Hybrid System for Efficient Power Transfer under Different Condition Kiran Kumar Nagda, Prof. R. R. Joshi (Electrical Engineering department, Collage of
More informationEnergy Management and Control System for Smart Renewable Energy Remote Power Generation
Available online at www.sciencedirect.com Energy Procedia 9 (2011 ) 198 206 9 th Eco-Energy and Materials Science and Engineering Symposium Energy Management and Control System for Smart Renewable Energy
More informationBI-DIRECTIONAL DC-DC CONVERTER FOR ENERGY STORAGE IN SOLAR PV SYSTEM
Volume 120 No. 6 2018, 1101-1111 ISSN: 1314-3395 (on-line version) url: http://www.acadpubl.eu/hub/ http://www.acadpubl.eu/hub/ BI-DIRECTIONAL DC-DC CONVERTER FOR ENERGY STORAGE IN SOLAR PV SYSTEM M.Sairam
More informationSMART 1000 / 2000 SERIES
SMART 1000 / 2000 SERIES DC/AC Mobile Hybrid Power Systems AC INVERTER VOLTAGE ADJUSTMENT 220-240V ON OFF 0 100 220-240V / 50Hz C.P. 1.2kW / S.P. 3.3kW 200 AC VOLTAGE Mobile Solutions for Renewable Energy
More informationSIMULTANEOUS CONTROL OF VOLTAGE AND POWER OF MICRO-TURBINE IN DISTRIBUTION NETWORK
SIMULTANEOUS CONTROL OF VOLTAGE AND OWER OF MICRO-TURBINE IN DISTRIBUTION NETWORK B. Yousefpour G. Gharehpetian R. Noroozian M. Nafar Electrical ering Department, Amirkabir University of Technology, Tehran,
More informationDevelopment of Engine Clutch Control for Parallel Hybrid
EVS27 Barcelona, Spain, November 17-20, 2013 Development of Engine Clutch Control for Parallel Hybrid Vehicles Joonyoung Park 1 1 Hyundai Motor Company, 772-1, Jangduk, Hwaseong, Gyeonggi, 445-706, Korea,
More informationAdvanced Active And Reactive Power Control For Mini Grids
RIO 9 - World Climate & Energy Event, 17-19 March 2009, Rio de Janeiro, Brazil Advanced Active And Reactive Power Control For Mini Grids Stratis Tapanlis and Michael Wollny SMA Solar Technology AG Sonnenallee
More informationAnalysis of Grid Connected Solar Farm in ETAP Software
ABSTRACT 2017 IJSRSET Volume 3 Issue 3 Print ISSN: 2395-1990 Online ISSN : 2394-4099 Themed Section: Engineering and Technology Analysis of Grid Connected Solar Farm in ETAP Software Komal B. Patil, Prof.
More informationRenewable Hybrid / Off-grid Solutions
Renewable Hybrid / Off-grid Solutions APPLICATION : BTS and micro-wave communications for remote telecommunications provider, hybrid systems are particularly well-suited for applications in remote areas,
More informationBattery to supply nonstop energy to load at the same time contingent upon the accessibility of the vitality sources. In
ISSN: 0975-766X CODEN: IJPTFI Available Online through Research Article www.ijptonline.com MONITORING AND CONTROL OF HYBRID ENERGY SOURCE SCHEME FOR GREEN ENVIRONMENT IN CHEMICAL AND PHARMACEUTICAL INDUSTRIES
More informationImplementation of Bidirectional DC/AC and DC/DC Converters for Automotive Applications
I J C T A, 9(37) 2016, pp. 923-930 International Science Press Implementation of Bidirectional DC/AC and DC/DC Converters for Automotive Applications T.M. Thamizh Thentral *, A. Geetha *, C. Subramani
More information:43 1/13 Victron & BYD B-Box
2018-11-04 15:43 1/13 Victron & BYD B-Box Victron & BYD B-Box The combination of Victron products with BYD B-Box lithium batteries (2.5, 5.0, 7.5, 10.0 and 12.8 models) has been tested and certified by
More informationDC Nanogrids Igor Cvetkovic
Center for Power Electronics Systems The Bradley Department of Electrical and Computer Engineering College of Engineering Virginia Tech, Blacksburg, Virginia, USA DC Nanogrids Igor Cvetkovic Presentation
More informationDesign of a Low Voltage DC Microgrid Based on Renewable Energy to be Applied in Communities where Grid Connection is not Available
3rd International Hybrid ower Systems Workshop Tenerife, Spain 8 9 May 8 Design of a Low Voltage DC Microgrid Based on Renewable Energy to be Applied in Communities where Grid Connection is not Available
More informationMAXIMIZING THE POWER OF RENEWABLES
MAXIMIZING THE POWER OF RENEWABLES MAXIMIZE YOUR ENERGY HARVEST With Eltek Valere s power conversion equipment you can maximize your solar energy harvest. Whether you operate a large-scale plant, a commercial
More informationMulti-Port DC-DC Converter for Grid Integration of Photo Voltaic Systems through Storage Systems with High Step-Up Ratio
Multi-Port DC-DC Converter for Grid Integration of Photo Voltaic Systems through Storage Systems with High Step-Up Ratio CH.Rekha M.Tech (Energy Systems), Dept of EEE, M.Vinod Kumar Assistant Professor,
More informationCustom Power Solar Radian Battery Energy Storage System
1442A Walnut St #368 Berkeley, CA 94709 (510) 912-4662 http://www.custompowersolar.com October 8, 2017 Custom Power Solar Radian Battery Energy Storage System Custom Power Solar provides residential energy
More informationDC Microgrids and Distribution Systems for Residences
Microgrids and Distribution Systems for Residences Toshifumi ISE, Hiroaki KAKIGANO (Osaka University, JAPAN) Outline of the Presentation 1. Introduction 2. System Configuration and Control Scheme 3. System
More informationHYBRID POWER FOR TELECOM SITES
HYBRID POWER FOR TELECOM SITES ARE YOU MAKING THE MOST OF YOUR ENERGY TO REDUCE OPEX? Energy costs can amount to 55-65% of total operating expenditure for mobile operators, yet many lack the tools they
More informationSolar inverter AX-series
Power Supplies Inverters Solar inverter AX-series 1-5kVA Multifunctional inverter NEU / NEW PV inverter PV / Battery Charger with 3-stage charge Battery-backed power supply Sine wave inverter with charging
More informationVESI: Demonstrator #2 Vehicle Integrated Power Conversion
VESI: Demonstrator #2 Vehicle Integrated Power Conversion Phil Mellor, Andrew Forsyth 18 th March 2016 Rationale The electric powertrain system is often assembled from separate building blocks each having
More informationIncreasing the Battery Life of the PMSG Wind Turbine by Improving Performance of the Hybrid Energy Storage System
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 2320-3331, PP 36-41 www.iosrjournals.org Increasing the Battery Life of the PMSG Wind Turbine by Improving Performance
More informationPower Conditioning of Microgrids and Co-Generation Systems
Power Conditioning of Microgrids and Co-Generation Systems Nothing protects quite like Piller piller.com Content 1 Introduction 3 2 Basic requirements of a stable isolated network 3 3 Requirements for
More informationImplementation of Bidirectional DC-DC converter for Power Management in Hybrid Energy Sources
Implementation of Bidirectional DC-DC converter for Power Management in Hybrid Energy Sources Inturi Praveen M.Tech-Energy systems, Department of EEE, JBIET-Hyderabad, Telangana, India. G Raja Sekhar Associate
More informationApplication. Battery. Public Grid GS HYBRID INVERTER
GS HYBRID SOLAR INVERTER Feed from Solar and Power, Grid backup, Build-in Transfer Switch / Solar Charger/ AC Charger, 500W~3kW, Pure Sine Wave Output GSH-15XX and GSH-30XX are the ideal solutions for
More informationSolar inverter From Wikipedia, the free encyclopedia
Page 1 of 7 Solar inverter From Wikipedia, the free encyclopedia A solar inverter, or converter or PV inverter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into
More informationDual power flow Interface for EV, HEV, and PHEV Applications
International Journal of Engineering Inventions e-issn: 2278-7461, p-issn: 2319-6491 Volume 4, Issue 4 [Sep. 2014] PP: 20-24 Dual power flow Interface for EV, HEV, and PHEV Applications J Ranga 1 Madhavilatha
More informationMicrogrid Technology. Paul Newman Microgrid Sales Manager North America - West
Microgrid Technology Paul Newman Microgrid Sales Manager North America - West Agenda Microgrid Thin Film Advantage Energy Storage Microgrid Master Controller Case Study Cat Microgrid Solutions See official
More informationInnovative Power Supply System for Regenerative Trains
Innovative Power Supply System for Regenerative Trains Takafumi KOSEKI 1, Yuruki OKADA 2, Yuzuru YONEHATA 3, SatoruSONE 4 12 The University of Tokyo, Japan 3 Mitsubishi Electric Corp., Japan 4 Kogakuin
More informationPV-Wind SOFTWARE for Windows User s Guide
PV-Wind SOFTWARE for Windows User s Guide Contents 1. Overview 1.1. General description of the PV-Wind Software 2. Inputting Parameters 2.1. System type 2.2. Location 2.3. Loads 2.4. PV modules 2.5. Inverters
More informationTechnical Series, Edition 16
Totally Integrated Power Technical Series, Edition 16 Transformer Selection according to Utilisation Profiles siemens.com/tip-cs 1. Regulations concerning efficiency requirements of dry-type transformers
More informationEXPERIMENTAL VERIFICATION OF INDUCED VOLTAGE SELF- EXCITATION OF A SWITCHED RELUCTANCE GENERATOR
EXPERIMENTAL VERIFICATION OF INDUCED VOLTAGE SELF- EXCITATION OF A SWITCHED RELUCTANCE GENERATOR Velimir Nedic Thomas A. Lipo Wisconsin Power Electronic Research Center University of Wisconsin Madison
More informationCONNECTING INVERTER. by John Wiles
connecting CONNECTING the inverter THE INVERTER by John Wiles 10 IAEI NEWS September.October 2009 www.iaei.org Connecting the utility-interactive inverter properly is critical to the safe, long-term and
More informationAlternator charging and power distribution system
Alternator charging and power distribution system 1. Overview: This example shows a typical automotive charging and power distribution system. Due to the technological advancements in electrical/electronics
More informationWelcome to the SEI presentation on the basics of electricity
Welcome to the SEI presentation on the basics of electricity 1 Electricity is a secondary energy source, meaning that it is produced from other, primary, energy sources. There are several primary sources
More informationModeling and Analysis of Vehicle with Wind-solar Photovoltaic Hybrid Generating System Zhi-jun Guo 1, a, Xiang-yu Kang 1, b
4th International Conference on Sustainable Energy and Environmental Engineering (ICSEEE 015) Modeling and Analysis of Vehicle with Wind-solar Photovoltaic Hybrid Generating System Zhi-jun Guo 1, a, Xiang-yu
More informationXcel Energy Guidelines for Interconnection of Electric Energy Storage with the Electric Power Distribution System
Xcel Energy Guidelines for Interconnection of Electric Energy Storage with the Electric Power Distribution System Adopted Based on State and Tariff Interconnection Rules Applicable to Northern States Power,
More informationInverter Testing at Sandia National Laboratories*
Inverter Testing at Sandia National Laboratories* Jerry W. Ginn Russell H. Bonn Greg Sittler Photovoltaic System Components Department Sandia National Laboratories PO Box 5800 Albuquerque, NM 87185-0752
More informationUsing the Phoenix MultiPlus to reduce operating cost of a generator
06/12/2004 Using the Phoenix MultiPlus to reduce operating cost of a generator 1. The traditional AC generator system Per Watt ac-power, an inverter is generally more expensive than a generator. So why
More informationTechnology from the New Product SANUPS K for a Smart Grid Society
Features: Technology Contributing to Effective Use of Power Technology from the New Product SANUPS K for a Smart Grid Society Yoshiaki Okui 1. Introduction After the Tohoku Earthquake, there is a movement
More informationPure Lead-Tin Technology
Pure Lead-Tin Technology Pure Lead-Tin technology offers many advantages which include: High overall efficiency High energy density Excellent high rate performance Excellent low temperature performance
More informationForecast the charging power demand for an electric vehicle. Dr. Wilson Maluenda, FH Vorarlberg; Philipp Österle, Illwerke VKW;
Forecast the charging power demand for an electric vehicle Dr. Wilson Maluenda, FH Vorarlberg; Philipp Österle, Illwerke VKW; Vienna, Bregenz; Austria 11.03.2015 Content Abstract... 1 Motivation... 2 Challenges...
More informationOPTIMIZING ENERGY STORAGE WITH INTEGRATED RENEWABLES. Mari McGowan Director of Project Management Energy Storage Solutions
OPTIMIZING ENERGY STORAGE WITH INTEGRATED RENEWABLES Mari McGowan Director of Project Management Energy Storage Solutions Battery and Systems Expertise- Battery & Energy Products Communications Systems
More informationAPPLICATION NOTE TESTING PV MICRO INVERTERS USING A FOUR QUADRANT CAPABLE PROGRAMMABLE AC POWER SOURCE FOR GRID SIMULATION. Abstract.
TESTING PV MICRO INVERTERS USING A FOUR QUADRANT CAPABLE PROGRAMMABLE AC POWER SOURCE FOR GRID SIMULATION Abstract This application note describes the four quadrant mode of operation of a linear AC Power
More informationElectric cars: Technology
In his lecture, Professor Pavol Bauer explains all about how power is converted between the various power sources and power consumers in an electric vehicle. This is done using power electronic converters.
More informationBMS-LiFePower. 123SmartBMS. Instruction manual
BMS-LiFePower 123SmartBMS Instruction manual Index Introduction...2 Keep the batteries in perfect condition...2 Package contains (12 Volt, 4 cells)...3 Specs...3 Placing the cell modules...4 Mounting the
More informationINTELLIGENT DC MICROGRID WITH SMART GRID COMMUNICATIONS: CONTROL STRATEGY CONSIDERATION AND DESIGN
INTELLIGENT DC MICROGRID WITH SMART GRID COMMUNICATIONS: CONTROL STRATEGY CONSIDERATION AND DESIGN Presented by: Amit Kumar Tamang, PhD Student Smart Grid Research Group-BBCR aktamang@uwaterloo.ca 1 Supervisor
More informationGlossary. * Credit for glossary starter: Florida Solar Energy Center. August 2015 PV Installer's Course: Glossary 1
ALTERNATING CURRENT (AC): Electric current (flow of electrons) in which the direction of flow is reversed at constant intervals, such as 60 cycles per second. AMORPHOUS SILICON: silicon with no crystal
More informationPOWERTRAIN SOLUTIONS FOR ELECTRIFIED TRUCKS AND BUSES
POWERTRAIN SOLUTIONS FOR ELECTRIFIED TRUCKS AND BUSES PDiM 2017 (Heimo Schreier) Burak Aliefendioglu Fredrik Haag AVL H. Schreier, B Aliefendioglu, F. Haag PDIM 2017 30 November 2017 1 TRUCK & BUS ELECTRIFICATION
More informationELG4126: Case Study 2 Hybrid System Design and Installation
ELG4126: Case Study 2 Hybrid System Design and Installation Diesel Driven Generator Life Cycle Costing Photovoltaic Cells, Modules, and Arrays Possibility of Integrating Fuel Cells and Wind Turbines Environmental
More informationAVL SERIES BATTERY BENCHMARKING. Getting from low level parameter to target orientation
1 AVL SERIES BATTERY BENCHMARKING Getting from low level parameter to target orientation CONTENTS OVERVIEW 1. AVL Introduction 2. Focus Series Battery Benchmarking 3. Benchmarking process 4. Target comparability
More informationBattery Bank for Wind Turbine. Project Proposal Prash Ramani, Marcos Rived TA: Katherine O Kane
Battery Bank for Wind Turbine Project Proposal Prash Ramani, Marcos Rived TA: Katherine O Kane Table of Contents: 1.0 Introduction.2 1.1 Statement of Purpose 1.1.0 Scope 1.1.1 Purpose 1.2 Objectives 1.2.1
More informationPresented at the 2012 Aerospace Space Power Workshop Manhattan Beach, CA April 16-20, 2012
Complex Modeling of LiIon Cells in Series and Batteries in Parallel within Satellite EPS Time Dependent Simulations Presented at the 2012 Aerospace Space Power Workshop Manhattan Beach, CA April 16-20,
More informationUsing Inverter Input Modes for Smart Grid Management
Using Inverter Input Modes for Smart Grid Management Some battery based grid connected inverters from OutBack Power have a unique collection of functions designed to optimize utility power usage for OutBack
More informationSmall Scale-Wind Power Dispatchable Energy Source Modeling
Small Scale-Wind Power Dispatchable Energy Source Modeling Jordan Cannon, David Moore, Stephen Eason, Adel El Shahat Department of Electrical Engineering, Georgia Southern University, USA Abstract Due
More informationHIGH VOLTAGE vs. LOW VOLTAGE: POTENTIAL IN MILITARY SYSTEMS
2013 NDIA GROUND VEHICLE SYSTEMS ENGINEERING AND TECHNOLOGY SYMPOSIUM POWER AND MOBILITY (P&M) MINI-SYMPOSIUM AUGUST 21-22, 2013 TROY, MICHIGAN HIGH VOLTAGE vs. LOW VOLTAGE: POTENTIAL IN MILITARY SYSTEMS
More informationTypes of Solar Photovoltaic Systems
Types of Solar Photovoltaic Systems Item Type text; Book Authors Franklin, Ed Publisher College of Agriculture, University of Arizona (Tucson, AZ) Download date 13/06/2018 20:07:28 Item License http://creativecommons.org/licenses/by-nc-sa/4.0/
More informationHybrid Three-Port DC DC Converter for PV-FC Systems
Hybrid Three-Port DC DC Converter for PV-FC Systems P Srihari Babu M.Tech (Power Systems) B Ashok Kumar Assistant Professor Dr. A.Purna Chandra Rao Professor & HoD Abstract The proposed a hybrid power
More informationAdvanced Soft Switching for High Temperature Inverters
Advanced Soft Switching for High Temperature Inverters Plenary Presentation at The 5th IEEE Vehicle Power and Propulsion Conference (VPPC'9) Jih-Sheng (Jason) Lai, Professor Virginia Polytechnic Institute
More informationBattery Response Analyzer using a high current DC-DC converter as an electronic load F. Ibañez, J.M. Echeverria, J. Vadillo, F.Martín and L.
European Association for the Development of Renewable Energies, Environment and Power Quality (EA4EPQ) International Conference on Renewable Energies and Power Quality (ICREPQ 11) Las Palmas de Gran Canaria
More informationSOL-ARK 8K We guarantee it s the most effcient & affordable Multi-Mode Inverter in its class
SOL-ARK 8K We guarantee it s the most effcient & affordable Multi-Mode Inverter in its class Most Effcient Battery Inverter Visit www.sol-ark.com Battery Solar made Affordable Examples: Grid Tied No Batteries
More informationConstruction of power supply system using electric vehicle for stable power delivery from PV generation
International Journal of Smart Grid and Clean Energy Construction of power supply system using electric vehicle for stable power delivery from PV generation Takahisa Kawagoe *, Kiyotaka Fuji, Atsushi Shiota,
More informationOff Grid Residential Package 1.0KW
Off Grid Residential Package 1.0KW List Price: $12,876.63 Our Price: $11,545.59 Save: $1,331.04 (10%) Model: Off-Grid Res Pkg 1kW Our Code: KITOFFGRID-B This item is a package made up of the following
More informationHigh Power Bipolar Nickel Metal Hydride Battery for Utility Applications
High Power Bipolar Nickel Metal Hydride Battery for Utility Applications Michael Eskra, Robert Plivelich meskra@electroenergyinc.com, Rplivelich@electroenergyinc.com Electro Energy Inc. 30 Shelter Rock
More informationExpect More From An Energy Storage Solution BATTERY FREE DC ENERGY STORAGE FOR UPS BILL WOLFE NORTHEAST REGIONAL MANAGER
Expect More From An Energy Storage Solution BATTERY FREE DC ENERGY STORAGE FOR UPS BILL WOLFE NORTHEAST REGIONAL MANAGER DC Energy Storage - ReGen Energy Re-cycle Markets / Applications Energy Re-cycling
More information