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首页> 外文会议>Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition >Variable switching frequency PWM strategy for inverter switching loss and system noise reduction in electric/hybrid vehicle motor drives
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Variable switching frequency PWM strategy for inverter switching loss and system noise reduction in electric/hybrid vehicle motor drives

机译：可变开关频率PWM策略可降低电动/混合动力汽车电机驱动器的逆变器开关损耗并降低系统噪声

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摘要

In order to reduce the inverter switching loss and system noise of electric vehicle (EV) and hybrid electric vehicle (HEV) motor drives operating in high output torque region, while preventing over-heating and demagnetization of the electric motor, this paper proposes variable switching frequency PWM (VSFPWM) strategies based on on-line prediction of current ripple RMS value for two typical motor drive systems of EV/HEV. First, the instantaneous output current ripple of three-phase inverter with SVPWM is analyzed in the time-domain. Then the current ripple prediction based VSFPWM strategies are proposed for both traction motor drive topologies to meet the current ripple RMS value requirement. Compared with constant switching frequency PWM (CSFPWM) method, the inverter switching loss and noise reduction capabilities of the proposed VSFPWM methods are analyzed. The effectiveness of the proposed methods is verified by both simulation and experiments.
机译：为了减少在高输出扭矩区域运行的电动汽车（EV）和混合电动汽车（HEV）电动机驱动器的逆变器开关损耗和系统噪声，同时防止电动机过热和消磁，本文提出了可变开关EV / HEV的两个典型电机驱动系统基于电流纹波RMS值在线预测的频率PWM（VSFPWM）策略。首先，在时域中分析了带有SVPWM的三相逆变器的瞬时输出电流纹波。然后针对两种牵引电动机驱动拓扑提出了基于电流纹波预测的VSFPWM策略，以满足电流纹波RMS值要求。与恒定开关频率PWM（CSFPWM）方法相比，分析了所提出的VSFPWM方法的逆变器开关损耗和降噪能力。仿真和实验验证了所提方法的有效性。

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