摘要
随着变换器、开关电源等电力电子设备的广泛应用,电网的电流谐波问题日益严重,因此功率因数校正(PFC)技术已成为电力电子技术领域一个新的研究热点。在分析PFC Boost变换器常用控制方法的基础上,提出了一种新型的预测平均电流控制策略。该策略采用了预测电流控制思想和单周期控制的原理对PFC Boost变换电路进行控制,消除了传统控制方法中的乘法器,且无需检测输入电压,无需内环电流PI调节器,具有实现简单、抗干扰能力强、响应速度快、输入电流谐波成分低、适应输入电压和负载变化范围宽等优点。仿真和实验结果表明该预测平均电流控制策略为有源PFC提供了一种新颖的、简单可行的控制方法。
With the utilization of converter, switching power supply and other power electronic devices, the grid current harmonics tum to be serious.So the power factor correction（PFC） technology for power electronics technology becomes a new hotspot.Based on the analysis and comparison of PFC Boost converter control methods,a new control strategy based on predictive average current control is proposed.This method uses the predicted current control strategy and principles of single-cycle control strategy for PFC Boost transform circuit control.This strategy eliminates the traditional control method of multipliers, doesn＇t need to detect the input voltage, doesn＇t need inner current PI regulator, and has the advantages of simple realization, antinterference ability ,fast response, low input current harmonics, adapting input voltage and wide range of load change.The simulation and experimental results show that the predicted average voltage control strategy for active PFC provides a novel, simple and feasible control methods.
出处
《电力电子技术》
CSCD
北大核心
2011年第12期120-122,共3页
Power Electronics
基金
国家自然科学基金项目(51167006)~~
关键词
变换器
功率因数校正
预测电流控制
converter
power factor correction
predictive current control
