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通过分析判断换相失败发生的标准和从换相失败恢复的策略,设计了以熄弧角差值和差值变化率为输入,越前触发角为输出的模糊控制器,使其代替传统的PI控制器。仿真结果表明,所设计的模糊控制器能够有效防止后续换相失败的发生,加快系统换相失败后的恢复。
By analyzing the criteria of commutation failure and the strategy of recovering from commutation failure, a fuzzy controller whose output is changed by the difference of extinction arc angle and the rate of change of difference is designed to replace the traditional PI Controller. The simulation results show that the designed fuzzy controller can effectively prevent the subsequent commutation failure and accelerate the recovery after the commutation failure.