HV 6.5kV/4kA IGCT Flexible DC Converter Valve

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30%

Reduction in the Number of Power Modules
25%

Reduction in the Volume of the Valve Hall
25%

Reduction in the Area by About
15%

Reduction in the Weight of the Converter Valve

Product Introduction

With the further enhancement of transmission capacity, particularly the application of flexible DC transmission in offshore wind power integration, traditional IGBT-based converter valve technology faces limitations in large-scale engineering applications due to IGBT "bottleneck" issues "in its large volume and weight, high costs, and the critical component. The “6.5kV domestically produced split-drive IGCT converter valve component for flexible DC" jointly developed by TBEA Xi'an Electric Technology and Tsinghua University has completely solved the challenge of IGCT commercialization. It has passed authoritative appraisal, with product performance, meeting engineering application conditions. With the ±500kV/2000MW transmission system as an example, the number of power modules is reduced by 30%, the volume of the valve hall is reduced by 25%; the area is reduced by about 25%; the weight of the converter valve is reduced by 15%; and the total platform cost is reduced by 20%.

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Core Parameters

- Value
  
  Parameters
- 3000V(30% higher than IGBT)
  
  Rated Voltage
- 4000V
  
  Overvoltage Operation
- >1422A(667Adc+1255Aac-rms_50Hz)
  
  Rated Current
- 1.05p.u (1493A) long-term operation
  1.1p.u (1564A) operation for 10s
  
  Maximum Operating Current
- Valve component overcurrent cut-off capability: 4000V/4000A
  Power module single pulse overcurrent cut-off capability: 4500V/4000A
  
  Current Withstand Capability
- <150Hz
  
  Switching Frequency
- <±10%@3000V
  
  Bus Ripple Voltage Fluctuation Range
- 4000V/8mF 0~+5%
  
  DC Capacitor
- 5.5kVac/1.6kA,main contact closing time<5ms, auxiliary contact response time<10ms
  
  Bypass Switch
- Operating voltage 400Vdc-6500Vdc; output 400V,35V; Output voltage accuracy: <=+1%,for 20ms without power failure
  
  Draw-out Power Supply
- 1700mmx350mmx870mm
  
  Module Dimensions
- 480kg
  
  Module Weight

Value

Parameters
3000V(30% higher than IGBT)

Rated Voltage
4000V

Overvoltage Operation
>1422A(667Adc+1255Aac-rms_50Hz)

Rated Current
1.05p.u (1493A) long-term operation
1.1p.u (1564A) operation for 10s

Maximum Operating Current
Valve component overcurrent cut-off capability: 4000V/4000A
Power module single pulse overcurrent cut-off capability: 4500V/4000A

Current Withstand Capability
<150Hz

Switching Frequency
<±10%@3000V

Bus Ripple Voltage Fluctuation Range
4000V/8mF 0~+5%

DC Capacitor
5.5kVac/1.6kA,main contact closing time<5ms, auxiliary contact response time<10ms

Bypass Switch
Operating voltage 400Vdc-6500Vdc; output 400V,35V; Output voltage accuracy: <=+1%,for 20ms without power failure

Draw-out Power Supply
1700mmx350mmx870mm

Module Dimensions
480kg

Module Weight

HV 6.5kV/4kA IGCT Flexible DC Converter Valve

Product Introduction

Core Parameters

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