带PFC的大功率变换器研制

Development of Power Converter with Power Factor Correction

为满足电动汽车对充电机高电压输出,高功率密度及高性价比的要求,同时减小对电网的谐波污染。前级采用双向交错式Boost-PFC技术,实现了功率因数校正;后级采用移相全桥技术,利用原边加二极管钳位的全桥变换拓扑,有效抑制整流管的寄生振荡。设计了一款高压大功率智能充电机。实验及实际应用情况表明,该设计运行可靠、各项指标满足要求,且成本较低,具有很强的市场竞争力。

To meet the electric car charger high voltage output, high power density and high ratio of performance requirements, and reduce the harmonic pollution to power grid. The front stage adopted two-way interleaved Boost-PFC technology, realized power factor correction： After class adopted the technology of the phase shifting full bridge, using the original edge add diode clamping the transformation of the whole bridge topology, effectively restrained parasitic oscillation of rectifier. A high voltage high power intelligent charging machine was designed. Experiments and practical application show that the design is reliable at operation, the indicators meet the requirements, and the cost is low, have very strong market competitiveness.