The APFC System Based on an Improved Duty Cycle Control Algorithm
Aiming at the problem that the digital control Power Factor Correction technology has some deficiencies in the dynamic responses and stability, a new Active Power Factor Correction(APFC) system based on an improved duty cycle control algorithm is designed in this paper. In this algorithm, when the load and the input voltage go step change, the output voltage ripple and the input voltage feed-forward are introduced to compensate the duty cycle during each switch cycle to ensure the input current an undistorted sinusoid. So it guarantees the high speed of dynamic response and the stability of the APFC system. Also the efficiency and reliability of the APFC system are improved by applying minimal voltage active-clamp softswitching technology, which can inhibit the reverse recovery of diodes effectively.
power factor correction soft-switching duty cycle control algorithm output voltage ripple input voltage feed-forward
Wu Li-hua Gao Hui-zhi Ma Huai-jian Liang Hong
The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province College of Measure-Control Tech. & Communication Engineer of Harbin University of Science &Technology Harbin,150080,China
国际会议
The 6th International Forum on Strategic Technology(IFOST 2011)(第六届国际战略技术论坛)
哈尔滨
英文
570-574
2011-08-22（万方平台首次上网日期，不代表论文的发表时间）