Key Technologies of Flexible Multi-Level Converter Chain (MDC)

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20

Active Power
51.54MVA

Apparent Power
+15 kV

DC Voltage
1667A

Direct Current

Product Introduction

Module capacitor usage is reduced by 80%;

Number of semiconductor devices is reduced by 25%;

Overall solution cost is reduced by over 30%;

The H-bridge part of the device, due to its zero-voltage switching characteristics, reduces overall machine loss by 50%;

This product can be applied in scenarios such as medium-voltage photovoltaic DC grid connection and long distance offshore wind power transmission, significantly enhancing conversion efficiency and increasing new energy power generation

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Core Parameters

- 50MW
  
  Active Power
- 12.5 MVar, configured at 25% active power
  
  Reactive Power
- 51.54MVA
  
  Apparent Power
- ±15 kV
  
  DC Voltage
- 1667A
  
  Direct Current
- 21.36 kV phase, 37 kV line voltage
  
  Rated AC Voltage on Grid Side (Phase, Rms)
- 804A
  
  Rated AC Current on Grid Side
- 893A, running at rated 37 kV at 0.9 p.u., 1.01 times overload, 893A=804A*1.1*1.01
  
  Maximum AC Current on Grid Side (Phase, Rms)
- 10kV
  
  Rated AC Voltage on Valve Side (Phase, Rms)
- 1718A
  
  AC Current on Calve Cide (Phase, Rms)
- 1908A
  
  Maximum AC Current on Valve Side

50MW

Active Power
12.5 MVar, configured at 25% active power

Reactive Power
51.54MVA

Apparent Power
±15 kV

DC Voltage
1667A

Direct Current
21.36 kV phase, 37 kV line voltage

Rated AC Voltage on Grid Side (Phase, Rms)
804A

Rated AC Current on Grid Side
893A, running at rated 37 kV at 0.9 p.u., 1.01 times overload, 893A=804A*1.1*1.01

Maximum AC Current on Grid Side (Phase, Rms)
10kV

Rated AC Voltage on Valve Side (Phase, Rms)
1718A

AC Current on Calve Cide (Phase, Rms)
1908A

Maximum AC Current on Valve Side

Key Technologies of Flexible Multi-Level Converter Chain (MDC)

Product Introduction

Core Parameters

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