单周期控制的双向半桥AC-DC变换器

摘要

A modified one cycle control(OCC)based bidirectional half-bridge AC-DC converter was proposed. Compared to the conventional OCC based converter which fails to operate in inverting mode ,the proposed converter could operate stably in both rectification and inverting mode,thus bidirectional power flow with high power factor was realized,operation principles of the proposed half-bridge AC-DC converter were presented and analyzed,and the stability criterion along with the voltage balance of the bridge capacitors was derived. Simulation performance and the experimental results show agreement with theoretical analysis.%提出了一种改进型单周期控制的双向半桥AC-DC变换器.与普通单周期控制的变换器不能工作在逆变模式相比,所提出的变换器能稳定工作在整流模式和逆变模式,实现了能量的双向流动,并具有高功率因数的特点.介绍和分析了改进型单周期控制的半桥AC-DC变换器的工作原理,分析其稳定性条件和桥臂电容电压的平衡问题.仿真和实验结果验证了理论分析的正确性.