基于Magnet的六相感应电动机建模及仿真研究

Research of Modeling and Simulation of Six-phase Induction Motor Based on Magnet

在Magnet环境中建立六相感应电动机模型,并采用梯形波相电流对其驱动;分析了转矩电流和转子电流的关系,表明梯形波相电流实现了励磁电流和转矩电流的分立控制;对电磁场进行2D瞬态磁场仿真,分析了等磁势分布情况、磁感应强度波形、稳态电磁转矩和转矩电流的关系;添加Motion单元,对电动机的启动性能进行2D动态仿真。仿真结果表明,电动机空载和负载运行时电磁转矩响应速度快,无明显电磁转矩脉动和转速脉动,说明采用梯形波相电流驱动电动机的方法切实可行,仿真参数设置合理,为最终实现电动机的性能优化提供了参考。

Six-phase induction motor model was established in Magnet environment and driven by trapezoidal-wave phase current.Analysis of relationship between torque current and rotor current indicated that trapezoidal-wave phase current achieved separated control of excitation current and torque current.2D transient magnetic field simulation was done and the distribution of magnetic equipotential,magnetic induction waveform,and relationship between steady-state electromagnetic torque and torque current were analyzed.2D dynamic simulation of start performance of the motor was done by adding a Motion unit.Simulation results showed that the electromagnetic torque responses quickly without obvious torque ripple and speed ripple,which indicates the method of using trapezoidal-wave phase current to drive motor is feasible,and simulation parameters is reasonable,which provides a reference for eventual optimization of motor performance.