永磁同步电机稳态短路试验

Steady-State Short-Circuit Test of Permanent Magnet Synchronous Motor

通过对永磁同步电机(PMSM)稳态短路工况中短路电流和短路转矩进行理论分析,得到了PMSM稳态短路电流和电磁转矩的解析表达式。结合二维有限元法对某型号180kWPMSM短路工况下的短路电流和短路转矩进行仿真分析计算,确定PMSM在稳态短路试验时短路电流、短路转矩随电机转速的变化规律。采用1台PMSM进行三相稳态短路试验验证,记录了短路试验时不同转速下的短路电流和短路转矩。对试验结果与理论分析、仿真分析结果进行对比分析,验证了短路电流、短路转矩随转速的变化规律。

Through the theoretical analysis of short-circuit current and short-circuit torque in the steady-state short-circuit condition of permanent magnet synchronous motor (PMSM), the analytical expressions of steady-state short-circuit current and electromagnetic torque of PMSM were obtained. Combined with two-dimensional finite element method, the short-circuit current and short-circuit torque of a 180 kW PMSM under short-circuit condition were simulated and calculated. The variation law of short-circuit current and short-circuit torque versus speed of the PMSM during the steady-state short-circuit test was determined. The three-phase steady-state short-circuit test was carried out for a PMSM. The short-circuit current and short-circuit torque at different speeds were recorded during the short-circuit test. The test results were compared with theoretical analysis and simulation analysis results to verify the variation law of short-circuit current and short-circuit torque versus the speed.