新型控制策略的数字有源功率因数校正的实现  

Implementation of a Novel Digital Active Power Factor Correction with New Control Principle

作　　者：田书欣[1] 钟莉娟[1] 杨喜军[1] 马少才[1] 

机构地区：[1]上海交通大学,上海200240

出　　处：《电力电子技术》2010年第2期56-57,85,共3页Power Electronics

摘　　要：单相有源功率因数校正(APFC)技术呈现出由模拟控制向数字控制的发展趋势,使高性能、大功率输出和进一步降低成本成为可能。根据单相APFC输入电压与输出电压的关系,推导出一种功率开关占空比的直接确定方法。该方法无需检测输入电压,在对采用该方法的单相APFC进行全面仿真后,采用TMS320F2801型DSP为核心的控制器完成了实验研究,最小输入电流甚至低于0.5 A,最大输入电流接近40 A,证明该方法具有概念清晰、校正效果好、无需输入电压检测、支持更小和更高功率范围等优点,非常适合数字化实现。Single-phase active power factor correction（APFC） techniques show the development trend of the transition from analog control to digital control.It is a chance that the PFC reduces costs further with high-performance and high-power out-put.According to the relationship between input voltage and output voltage of APFC,the method for determining the duty cy-cle of power switch can be given directly.This method is used with input voltage non-detection.After simulating APFC,exper-iments are completed by controller formed DSP TMS320F2801.The value of minimum input current is even lower than 0.5 A and the maximum input current has a value of nearly 40 A.The results verify that the new approach is most suitable for digi-tal realization,which has clear conceptions,high efficiency,input-voltage without-detection and so on.

关 键 词：功率因数校正 占空比 输入电压检测 

分 类 号：TM714.3[电气工程—电力系统及自动化]