海上风电具有资源丰富和利用前景广阔的优势，对于我国实现“双碳”目标具有十分重要的意义。深远海海上平台空间布局紧张、环境恶劣、运行维护工况复杂，对柔性直流（voltage source converter based high voltage direct current，VSC-HVDC）换流站轻型化、紧凑化及可靠性要求更高。针对海风送出柔性直流系统，采用6.5 kV功率器件可降低建设成本和设备占地，提升单位体积输送容量。基于6.5 kV集成门极换流晶闸管（integrated gate commutated thyristor，IGCT）设计了紧凑轻型化柔性直流功率模块，改善了IGCT黑启动回路的稳定性，并通过试验验证了其可靠性，为后续研制提供技术支撑。

Offshore wind power has the advantages of abundant resources and broad utilization prospects, and it is also of great significance for China to achieve “dual-carbon” goal. The tight space layout, harsh environment, and complicated operation and maintenance conditions of deep and distant sea offshore platforms require higher requirements for lightweighting, compactness, and reliability of voltage source converter based high voltage direct current (VSC-HVDC) converter stations. For the offshore wind power transmission system via VSC-HVDC, 6.5 kV power devices are used to reduce the construction cost and equipment footprint, and improve the transmission capacity per unit volume. A compact and lightweight VSC-HVDC power module is designed based on a 6.5 kV integrated gate commutated thyristor (IGCT), which improves the stability of the IGCT black start circuit and verifies its reliability through experiments, providing technical support for subsequent development.