详细介绍了双向直流变化器的结构及控制技术，为电动汽车电池充放电系统的设计提供了一个很好的平台。-Details of the bi-directional changes of the structure and the DC control technology for electric vehicle battery charge and discharge system is designed to provide a good platform.

The dc-ac converter, also known as the inverter, converts dc power to ac power at desired output voltage and frequency. The dc power input to the inverter is obtained an existing power supply network or a rotating alternator through a rectifier or