摘要
针对用于电动汽车充电的单相电压型PWM整流器,对其单极性调制方式和双极性调制方式进行了对比研究,结合两种调制方式的优点,提出了单极性调制与双极性调制相结合的混合调制方式,解决了单相电压型PWM整流器在单极性调制时过零点附近电流畸变较大和双极性调制时电路开关损耗较大的问题。搭建了实验平台,实验结果证明了混合调制方式的可行性和正确性。
The performance comparison of the unipolar modulation and bipolar modulation of a single-phasevoltage-source-type PWM rectifier for electric vehicle charging were studied. Combining the advantages of bothmodulation,a hybrid modulation method composed of the unipolar modulation and bipolar modulation was proposed,the zero-crossing current distortion problem for the unipolar modulation and the more switching loss problem for thebipolar modulation were solved. An experimental platform was made,the feasibility and correctness of the proposedhybrid modulation method are verified by the experimental results.
出处
《电气传动》
北大核心
2016年第3期34-38,共5页
Electric Drive
基金
国家自然科学基金(51477139)
陕西省重点学科建设基金(105-5X1201)
陕西省协同创新基金(2014XT-19)
关键词
PWM整流器
混合调制方式
开关损耗
电流畸变
PWM rectifier
hybrid modulation method
switching loss
current distortion
