数字控制的CCMBoostPFC变换器的实现方法.PDFVIP

Journal of Electrical Engineering 电气工程, 2018, 6(2), 199-205 Published Online June 2018 in Hans. /journal/jee /10.12677/jee.2018.62023 Realization of CCM Boost PFC Converter Based on Digital Control Ke Yun School of Automation, Nanjing University of Science and Technology, Nanjing Jiangsu th nd th Received: Jun. 8 , 2018; accepted: Jun. 22 , 2018; published: Jun. 29 , 2018 Abstract Based on the basic principle of average current control, the duty cycle expression of the control algorithm is derived, and a digital realization method of variable duty cycle control with constant power is proposed in this paper. The 300 W CCM Boost PFC converter is experimentally verified based on digital signal controller MC56F8257. The experimental results show that the digital con- trol can achieve a power factor close to 1 in a wide input voltage range, and the distortion of input current is very small. Keywords Power Factor Correction (PFC), Continuous Current Mode (CCM), Average Current Control, Digital Realization 数字控制的CCM Boost PFC变换器的实现方法 云 珂 南京理工大学，自动化学院，江苏 南京 收稿日期：2018年6月8 日；录用日期：2018年6月22 日；发布日期：2018年6月29 日 摘 要 基于平均电流控制的基本原理，推导了该控制算法的占空比表达式，并提出了一种具有恒功率功能的变 占空比控制的数字实现方法。基于数字信号控制器MC56F8257对300 W CCM Boost PFC变换器进行了实 验验证。实验结果表明，数字控制可以在较宽的输入电压范围内实现接近1的功率因数，输入电流的畸 变很小。 文章引用: 云珂. 数字控制的CCM Boost PFC 变换器的实现方法[J]. 电气工程, 2018, 6(2): 199-205. DOI: 10.12677/jee.2018.62023 云珂 关键词 功率因数校正(PFC) ，连续模式(CCM) ，平均电流控制，数字实现 Copyright © 2018 by author and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Open Access 1. 引言 随着数字信号处理技术的快速发展，数字化功率因数校正技术得以快速发展，数字控制的优势在于 电路简单，不需变更控制电路即可实现控制算法的修