SINAMICS SM150. Siemens product performance features. Competitor product profile. Components. Power, transport units. Service friendliness

Transcription

1 SINAMICS SM150 B.Rasch A&D LD IB mail to: Slides: 1

2 SINAMICS SM150 Product overview Voltage: Power: Motor: Operation: Output frequency: Topology: Technology: Cooling: Closed-loop control: 3.3 kv MVA (20S) SM or IM motor 4 Q (Active Front End) Hz( for SM) 3-level voltage-source DC link inverter IGCT (Integrated Gate Commutated Thyristor) Water TRANSVEKTOR closed-loop control Options: Common DC bus for power equalization for 2 or 3 motors, reactive power compensation using AFE, closed-loop technology control, excitation supply Typical features: High-end performance, high dynamic response and regenerative feedback, low and high speeds, low stressing on the line supply line friendly Slides: 2

3 SINAMICS SM150 Product features low stressing on the supply, e.g. cosphi = 1 adjustable line supply power factor (capacitive) extremely high motor dynamic response low torque ripple high efficiency operation that results in low motor stressing Typical applications: Metal: Rolling-mill main drives Mining: Mine hoists, conveyor belts Others: Test stands, reactive power compensation Slides: 3

4 Product (1) of competitor Competitor - Product overview Voltage-source DC link inverter (VSI): IGCT technology, 3-level inverter, line-side AFE or 12/24-pulse diode rectifier, closed loop DTC control Cooling type: Water cooling with de-ionized water Configurations: Up to 3x in parallel, DC bus, optional braking chopper. Slides: 4

5 Product (2) of competitor Competitor - Product overview Power range: Supply voltage: Overload capability: Efficiency: Power factor: Max. output frequency: Field-weakening range: Degree of protection: Cable connection: Motor: Dimensions: 3-11MVA (1 min.) up to 31MVA (1min.) 3.0 to 3.3kV 150% (1min) 98% at rated load Line supply: 0,95 with DFE /1,0 with AFE Motor: Induction motor typically >0,84; synchonous motor 1,0 max. 75Hz max.1:5 IP32 From the top or from the bottom Induction and synchronous motor, the same or different size/type, as single-motor or multimotor drive, also permanent-magnet SM x 1000 x 2185 (LxDxH) basic unit with closed-loop control without cooling system Slides: 5

6 The best solution for every power range HV-IGBT module IGCT, GCT IEGT PPI 1 5 MVA SIEMENS Conducting losses Higher Lower Switching frequency Hz 500 Hz, DTC Snubber circuit None di/dt, clamp Short-circuit proof Yes No Protection for the Short-circuit proof IGBTs di/dt reactor mechanical system Local arcing 5 12 MVA SIEMENS competitor disadvantage Conducting losses Lower Average Higher Switching frequency 200 Hz PWM 500 Hz 500 Hz 500 Hz DTC Snubber circuit di/dt, clamp Leak. induct.,clamp None Short-circuit proof No No Yes Protection for the mechanical system di/dt reactor Leakage inductance, mechanical system Short-cir. proof IGBTs mechanical system SIEMENS strategy: HV-IGBT module for low power ratings, IGCT for high power ratings. competitor too high switching frequency Slides: 6

7 SINAMICS SM150 Better in efficiency and current characteristic SINAMICS SM150: Transvector control with ROTOS (Reduced Optimized Task Oriented Switching) Competitor : DTC (Direct Torque Control) Spannung [V] Strom [A] ,0000 0,0100 0,0200 0,0300 0,0400 0,0500 0,0600 0,0700 0,0800 0,0900 0, Zeit [ms] Einzelharmonische im Strom THD: 5,5% Predictable harmonics Lower IGCT switching frequency 200 Hz (high efficiency, high individual power ratings) Operation with low motor stressing Extremely good current waveform Unpredictable harmonics Higher IGCT switching frequency 350 Hz (losses, lower individual power rating) Supplementary losses in the motor Lower quality of the current waveform Slides: 7

8 SIEMENS uses proven Converter Design only 80ms breaking time is required Higher transformer impedance (12%) Independent Converters MP + 3 x 3 x MP + 3 x 3 x MP + 3 x 3 x MP + 3 x 3 x MP + 3 x 3 x G MP + 3 x 3 x Low short circuits can be kept under control! Reference: Maanshan Hot Strip Mill in operation since year 2004 Slides: 8

9 < 60 ms breaking time is required This is not a proven concept Design Doubts/Risks: DC Link short circuit can cause extensive damage since 7 units of power inverters (with high energy stored in the dc capacitors) are connected to the common dc bus. It is unlikely that such a configuration will withstand a dc fault without destructive damage. Risk of voltage and power oscillation on the common dc link because of large dimensions and longer length of dc link. The series connection of transformers at primary side is sensitive to unsymmetric cuurent distribution. Saturation effects Slides: 9

10 SINAMICS SM150 Higher power rating per basic unit SINAMICS SM150: Competitor: Short time overload power: 12.5 MVA Reason: Our ROTOS control technique allows a higher power utilization of the IGCT elements. Consequences: Higher reliability and smaller size in the range 12.5 MVA and 35 MVA overload power. Short time overload power: 11 MVA (same IGCT) Reason: The TDC operates with a higher switching frequency and results in higher semiconductor losses. Consequences: Lower reliability and larger size in the range 11 MVA and 31 MVA overload power. Transport units (LxDxH): Power unit, 3-phase unit: 2.3 x 1.5 x 2.5 m Transport units (LxDxH): Complete drive inverter with cooling system, e.g.: 5.5 x 1.0 x 2.2 m Slides: 10

11 IGCT Based Voltage Source Converter SINAMICS SM150 Siemens Line-side product pts performance Circuit breaker features Converter transformer Competitor Line-side product cts Active Line Module (3-level inverter) with IGCT DC link with dry-type capacitors Motor Module (3-level inverter) Service with friendliness IGCT Motor-side pts and cts = High Reliability Self-Healing DC Link Capacitors In the SINAMICS medium-voltage converters MKP film capacitors are used. They offer the following advantages: Maintenance-free due to dry impregnation Self-healing in case of localized film defects In contrast to electrolytic capacitors no leaks or explosions possible Expected life time up to 200,000 hours (> 22 years) (electrolytic capacitors: 5 years) MV motor Slides: 11

12 SINAMICS SM150 Provides a maximum of service friendliness SINAMICS SM150 Competitor : Transparent design, generous High packing density, nontransparent mechanical design mechanical design Phase module stacks can be Stack plug-in contacts represents replaced quickly a quality risk Semiconductors can be replaced The stack must be removed in quickly, also in the mounted stack order to replace the free-wheeling (our recommendation: Customers keep a stock of stacks) diodes. Phase module Plug-in contact Slides: 12

13 SINAMICS SM150 Provides a maximum of service friendliness SINAMICS SM150: Competitor: The closed-loop control modules can It is complicated to replace the be more quickly replaced thanks to the control modules modular plug-in system Slides: 13

14 Thank you very much for your attention. Slides: 14