【摘要】 在分析了三电平变频器拓扑结构特点和IGCT结构特性的基础上,讨论了基于IGCT的高压三电平变频器失效机理及保护策略,提出了针对IGCT的全保护概念。对其安全运行区域进行了详尽的分析,结合实例给出定量的安全区域设计原则和相应的保护措施。更多还原

【Abstract】 Based on the character of three-level inverter and structure of IGCT, the failure mechanism and protection strategy of high voltage three-level inverter are discussed and the whole protection of IGCT is proposed in this paper. Also the SOA (Safe Operational Area) is analyzed and its design principle is presented.更多还原