电流相位超前补偿在单相PFC升压电路的应用  

Application of Current Phase Leading Compensation in Single-phase PFC Boost Circuit

作　　者：李春阳 韩聪 陈卓 李宗原 LI Chun-yang;HAN Cong;CHEN Zhuo;LI Zong-yuan(Xuchang KETOP Testing Research Institute Co.,Ltd.,Xuchang 461000,China)

机构地区：[1]许昌开普检测研究院股份有限公司,河南许昌461000

出　　处：《电力电子技术》2022年第4期90-93,共4页Power Electronics

基　　金：国家自然科学基金(U1804252)。

摘　　要：平均电流模式控制模式的功率因数校正(PFC)升压电路,采用双闭环控制,内环电流环对正弦电流进行调节,外环电压环将直流电压控制在额定输出电压范围,在工程上被广泛使用,但在低于穿越频率时存在电流相位超前的问题,会导致电流过零失真同时使谐波含量增大。因此对电流相位超前问题进行分析并提出一种补偿电流相位超前的电流环控制方法,在电流环上增加一阶低通滤波器来抵消相位超前。通过仿真和试验进一步验证该方案的合理性并解决电流相位超前问题,对降低电流谐波畸变率有明显效果。The power factor correction(PFC)Boost circuit of average current mode control mode adopts double closed loop control.The inner loop current loop adjusts the sinusoidal current,and the outer loop voltage loop controls the DC voltage within the rated output voltage range.It is widely used in engineering,but it is widely used in engineering.When the frequency is lower than the crossover frequency,there is the problem of current phase lead,which will cause the current zero-crossing distortion and increase the harmonic content.Therefore,the current phase lead problem is analyzed and a current loop control method that compensates for the current phase lead is proposed.Add a first-order low-pass filter to the current loop to offset the phase lead,and further verify the rationality of the scheme through simulation and solve the current phase lead problem,which has a significant effect on reducing current harmonic distortion.

关 键 词：功率因数校正 电流相位超前补偿 电流谐波畸变率 

分 类 号：TM933.31[电气工程—电力电子与电力传动]