【摘要】 研究了基于平均电流控制的功率因数校正(Power Factor Correction,简称PFC)变换器并联系统的均流控制方法;提出了一种可同时实现PFC和均流控制的综合电流采样电路;分析了并联系统的均流控制原理和均流度对参数的敏感性;给出了两台300WPFC变换器样机并联系统的实验结果和分析;证明了理论分析的正确性和合理性。更多还原

【Abstract】 A current sharing control strategy based on average current principle is developed in this paper for PFC converter modules operating in parallel.An improved integrated current sensing circuit for both PFC and output current sharing is proposed.Furthermore,the operation principle of the current sharing control and the sensitivity are analyzed.The experimental results of two-300W PFC converters parallel system are given to support the study and theoretical analysis.更多还原