Introduction to El. Energy Systems. October 1, 2014

Transcription

1 Introduction to El. Energy Systems October 1,

2 Importance of Energy Systems Energy systems enabled industrial revolution and arguably caused one of the largest changes in human society ever : Pearl street power plant

3 Typical Structure of an Energy System Four key elements: 1. Sources 2. Interconnects: - switch-mode el. energy converters (power electronics), and 3. Utility Network 4. Loads - Electric machines and others 3

4 Structure of Electrical Energy System 4

5 Relevant Courses ECE349 Fundamentals of El. Energy Systems ECE413 ECE463 ECE514 ECE533 Energy Systems and Distributed Generation Electric Drives Power Electronics: Converter Topologies Power Electronics: Switch-Mode Power Supplies 5

6 Energy Systems Examples Utility systems (conventional)/ hundreds of GW Marine, aircrafts, and electric/ hybrid vehicles/ from several kw to MW Electronic devices/ from a fraction of watt to several kw 6

7 Traditional Energy Systems (Ac) 7

8 Modern utility system AC Load AC Load AC Load Utility S S S AC Power electronics dc VS D DC DCNet VS D AC Net S S AC Load AC Load AC Load Solar Panels, Wind Turbines Energy Storage Microturbines Unregulated sources 8 Power Electronics converters for Efficient Energy conversion

9 Energy system of an aircraft Aircraft contains or three elements of the energy system (sources, power electronics, and various loads) 9

10 Hybrid/Electric Vehicles 10

11 Energy system of an electronic device Processor supply Ac line Ac/dc (PFC) Downstream dc/dc stage Graphics supply Digital loads Large majority Charger Memory supply Battery pack Backlight supply Dc bus I/O supply Analog or Mixed-signal Loads Low-power SMPS HD supply Power from a fraction of a watt to hundreds of watts Usually parts of a multi-supply power management systems 11

12 Traditional Energy Systems Areas 12

13 Utility Network Elements: Generation 13

14 Utility Network Elements: Generation al%20power%20ccs/04_thermalp_products_services.jpg 14

15 El. Energy Generators & El. Machines %20Releases%20and%20Highlights/ _Pressefoto%20Alstom%20Power_KA26%20Gaskraftwerkstech nologie.jpg 15

16 Utility Network Elements: Transmission gd/200907/707.html 16

17 Utility Networks Control and Security t/p/nhpr/files/201301/psnh%20cont ciam/cache/file/fbe4111e rol%20center.jpg 4128-BF B3BF.jpg 17

18 SCADA Control and Communication

19 Power Electronics P in Power Electronics Converter P out Efficient and controlled el. Energy conversion from one form to another -Dc/dc -Ac/dc -Dc/ac Control -Ac/ac 19

20 Power Electronics: Dc Ac Converters Solar Panels Dc input Dc-to-ac converter (inverter) Ac output To utility network 20

21 Energy system of an electronic device Processor supply Ac line Ac/dc (PFC) Downstream dc/dc stage Graphics supply Digital loads Large majority Charger Memory supply Battery pack Backlight supply Dc bus I/O supply Analog or Mixed-signal Loads Low-power SMPS HD supply Power from a fraction of a watt to hundreds of watts Usually parts of a multi-supply power management systems 21

22 Dc-Dc Converters and IC Design On-chip integrated power supply 22

23 Interdisciplinary Nature Circuit analysis Communications Control Theory Computer and Software Engineering IC design Mechanical design Economics 23

24 Jobs in Energy Systems & Power Electronics Microelectronics industry Power electronic companies Utility companies Software design companies Communication systems Economics 24