永磁同步电机稳态短路试验
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摘要
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180 kW PMSM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.
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.
引文
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[3] 况金园,殷强.永磁同步电机稳态短路电流的形成及试验方法[J].现代制造技术与装备,2016(2):72.
[4] 国家铁路局.电力牵引轨道机车车辆和公路车辆用旋转电机:第4部分与电子变流器相连的永磁同步电机:GB/T 25123.4—2015[S].北京:中国标准出版社,2016.
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[2] 暴杰,赵慧超,董秀辉,等.电动车用永磁同步电机的三相短路稳态分析与应用[J].微特电机,2014,42(3):17.
[3] 况金园,殷强.永磁同步电机稳态短路电流的形成及试验方法[J].现代制造技术与装备,2016(2):72.
[4] 国家铁路局.电力牵引轨道机车车辆和公路车辆用旋转电机:第4部分与电子变流器相连的永磁同步电机:GB/T 25123.4—2015[S].北京:中国标准出版社,2016.
[5] 蒋文选.永磁同步电机的电枢反应电抗和同步电抗[J].贵州科学,1998(1):52.
[6] 杨松,石婷婷.永磁电机短路计算研究[J].船电技术,2011,31(11):19.
[7] 王北社,田德见.永磁同步发电机三相突然短路过渡过程的分析与探讨[J].东方电机,2013,41(1):36.