凸极永磁同步电机电流控制方法研究

摘要

对凸极永磁同步电机数学模型和4种电流控制方法进行了介绍,推导了4种电流控制方法对应的电流相角控制条件,并且根据数学模型和相角控制条件建立了用于永磁同步电机电流控制算法研究的仿真模型、在此基础上,深入研究了不同负载和转速条件下,电机应用不同电流控制方法的输出转矩、端电压、功率因数、去磁因数和效率,在比较各种方法特点的基础上,指出了4种电流控制方法的适用领域.%The mathematic model for salient pole permanent magnet synchronous motor as well as four types of current control methods were introduced, which facilitated the deduction of four respective current phase control conditions. According to these,a simulation model was established to study current control methods for permanent magnet synchronous motor. Many parameters such as the output torque, voltage, power factor, demagnetizing coefficient and efficiency as well under different loads and speed conditions were deeply investigated. With these encouraging results we compared the characteristics of each methods and attempted to point out the application scope of these four current control methods.