摘要
文章描述了机车辅助变流器LC滤波器的主电路结构,给出了双极性SPWM调制策略输出电压的解析表达式,分析了模块PWM电压谐波特性、电感电流以及逆变输出电压。为了使机车辅助变流器在满足输出电压谐波含量要求的前提下降低机车辅助变流器LC滤波器的体积与重量,从LC特性阻抗的角度出发,提出了一种电压型辅助变流器LC滤波器的设计方法,并在实际的工程应用中验证了该方法。
In this paper,the main circuit structure of LC filter for locomotive auxiliary converter was described,analytical expression of output voltage for bipolar SPWM modulation strategy was given and Harmonic characteristics,inductor current and output voltage of the inverter were analyzed.In order to reduce the weight and volume of locomotive auxiliary converter LC filter on the premise of meeting the requirements of the output voltage harmonic content,it proposed a design method of voltage-type auxiliary converter LC filter from the aspect of LC characteristic impedance,and the proposed LC filter has been verified through field application.
出处
《大功率变流技术》
2017年第1期64-67,共4页
HIGH POWER CONVERTER TECHNOLOGY
关键词
辅助变流器
LC滤波器
特性阻抗
auxiliary converter
LC filter
characteristic impedance
