The thermal resistance model of a thyristor converter valve considering its water-cooling circuit is estab-lished by combining the mechanism of a thyristor connected in series with the water-cooling circuit, which can calculate the water temperature at the inlet of each heat sink, as well as the junction temperature of each thyristor accordingly. This model is used to calculate the thermal resistance of each component in the converter valve in an example, and a steady-state thermal resistance model is built to calculate the junction temperature of the thyristor. Calculation results show that the maximum calculation error of thyristor junction temperature can reach 10.81％ when considering the differ-ence of coolant temperature in the water-cooling circuit.
关键词
晶闸管/水冷回路/热阻/结温计算
Key words
Thyristor/water-cooling circuit/thermal resistance/junction temperature calculation
维普
万方数据