长电缆传输引起的电机端口过电压的研究

Research on the Over-voltage of the Motor Port Caused by Long Leads Transmission

电机与变频器通过长线电缆连接时,会在电机端口产生过电压,威胁电机的安全运行。本文在分析电机端口过电压产生机理的基础上,采用机侧滤波器抑制电机端口电压。利用Matlab/Simulink建立仿真模型对其进行仿真分析,仿真结果验证了电机端口电压分析的正确性和所设计滤波器的有效性。

When the motor is connected with frequency converter by long leads, there will be resulted in over-voltage reflection on the motor, which threatens secure working. Generator side filter is used in this paper to reduce the port voltage after analyzing the mechanism of the motor port over-voltage. The simulation model is built by Maflab/Simulink, the simulation results verify the correctness of the analyzing and the effectiveness of the signed filter.