永磁同步曳引机高速封星短路暂态参数分析

Transient Analysis and Computation for High Speed Short Circuit to the Permanent-magnet Synchronous Traction Machine

简要说明永磁同步曳引机高速封星的危害，对高速封星时瞬态工况作了深入分析，推导出瞬态短路电流、电磁转矩的计算式；通过示例进一步阐明高速封星的危险性。

The article introduces high speed short circuit of harm to PM synchronous traction machine, analyzes transient state operating condition for high speed short circuit to PM synchronous traction machine, deduces calculation formula of current and torque of high speed short circuit under transient tate, and further elucidates the high speed short circuit is unsafe for example calculation.