电动汽车电机控制器的矩形波调制策略  

A Novel Rectangular-wave Modulation Strategy for AC Motor Controller in Electric Vehicles

作　　者：杨阳[1] 王庆年[1] 张剑楠[2] 沈梦怡 龚依民[2] 

机构地区：[1]吉林大学汽车工程学院,长春130022 [2]吉林大学物理学院,长春130012

出　　处：《汽车工程》2017年第10期1158-1166,共9页Automotive Engineering

基　　金：国家自然科学基金(21327803)资助

摘　　要：为提高电动汽车电机控制器在高转速区的直流母线电压利用率,提出一种针对表贴式永磁同步电机的电流闭环相位控制矩形波调制策略。该策略利用电流的参考值和反馈值闭环调节矩形波相位,并将过调制模式最后一个采样周期的电压相位作为电流闭环的积分量初始值。仿真及试验结果表明,该策略可实现过调制模式到矩形波模式的平滑过渡;高速区矩形波相位平稳;逆变器开关损耗减小;有效提高直流母线电压利用率;拓宽转速运行范围。A novel rectangular-wave modulation strategy based on current closed-loop phase control is pro-posed for surface mounted permanent magnet synchronous motor to enhance the utilization rate of DC link voltage in high speed range of the motor controller in electric vehicle. The strategy regulates the phase of rectangular-wave by reference current and feedback current,and uses the voltage phase in the last sample cycle of over modulation mode as the initial integral value of current closed- loop. The results of simulation and test show that the strategy proposed can achieve the smooth transition from over modulation mode to rectangular-wave mode with stable rectangular-wave phase in high speed range and less switching loss of inverter,effectively increasing the utilization rate of DC link voltage and widening the operating speed range of AC motor.

关 键 词：电动汽车 交流电机 电压利用率 矩形波调制 相位 

分 类 号：U469.72[机械工程—车辆工程]