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为提高电动车(EV)传动系统的整体性能,设计了用于内埋式永磁同步电机(IPMSM)的自适应控制器。根据IPMSM的交、直轴电感随着定子电流的变化而变化的特点,为实现最小损耗的电流控制,进行了电机参数的有限元(FEM)计算。控制器参数被保存在一个二维表中,根据定子电流自行校正电机的交、直轴电感值,并以查表法获得相应的控制器参数。部分控制系统组件实现在现场可编程门阵列(FPGA)中。结果表明:自适应控制器可以很好地抑制电流的超调,同时由于FPGA也部分地取代了微控制器的功能,使得该系统具有更快的响应速度。
In order to improve the overall performance of electric vehicle (EV) transmission system, an adaptive controller for embedded permanent magnet synchronous motor (IPMSM) is designed. According to the characteristics of IPMSM, the direct-axis inductance varies with the stator current, the finite element (FEM) calculation of the motor parameters is carried out to achieve the minimum loss current control. Controller parameters are stored in a two-dimensional table, according to the stator current self-correction motor AC and DC axis inductance value, and to obtain the corresponding controller parameters look-up table. Some control system components are implemented in a field-programmable gate array (FPGA). The results show that the adaptive controller can restrain the overshoot of the current well. At the same time, the FPGA partially replaces the function of the microcontroller and makes the system more responsive.