电力系统自动化Issue(3)：30-35,6.DOI:10.7500/AEPS20130724007
一种有源功率因数校正电流畸变抑制控制技术
A Control Strategy of Boost PFC to Minimize Current Zero-crossing Distortion
杨明 1刘杰 1梁轩瑞 1徐殿国1
作者信息
- 1. 哈尔滨工业大学电气学院电力电子与电力传动研究所，黑龙江省哈尔滨市 150001
- 折叠
摘要
Abstract
Single switch boost-type power factor correction (PFC) is applied to reducing power grid harmonic pollution in the fan motors control system.However,the current zero-crossing distortion will affect the PFC performance.To solve this problem,a new current zero-crossing distortion suppressing method and its concrete implementation are proposed.Digital control is adopted and duty ratio feedforward compensation is introduced to reduce the disturbance of input voltage and output voltage on the inductor current,forcing the input current to follow the input voltage changes;the input impedance is analyzed to show that duty ratio feedforward compensation can inhibit the current phase advance.A current sampling method is proposed to get the average current by sampling twice per PWM period.Simulation and experiment results show that the proposed method can inhibit current phase advance,eliminate input current harmonics,and achieve unity power factor correction,verifying the validity of the proposed method.关键词
有源功率因数校正/电流畸变/占空比前馈补偿/输入阻抗/电流采样Key words
power factor correction/current distortion/duty ratio feedforward compensation/input impedance/current sampling引用本文复制引用
杨明,刘杰,梁轩瑞,徐殿国..一种有源功率因数校正电流畸变抑制控制技术[J].电力系统自动化,2014,(3):30-35,6.
