基于双闭环线性积分高功率因数直流电子负载研究.pdfVIP

Journal of Sensor Technology and Application 传感器技术与应用, 2016, 4(2), 57-63 Published Online April 2016 in Hans. /journal/jsta /10.12677/jsta.2016.42007 High Power Factor DC Electronic Load Research Based on the Double Closed-Loop Linear Integral Jiabin Wu, Rong Pei* Nanjing University of Science and Technology, Nanjing Jiangsu th th st Received: Mar. 29 , 2016; accepted: Apr. 17 , 2016; published: Apr. 21 , 2016 Copyright © 2016 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract According to single closed -loop DC electronic load system, this article studies a new type of elec- tronic load system based on double closed-loop linear integrals. The outer ring mainly uses PI regulator to eliminate static deviation and improve the conversion rate. The inner ring uses low power microcomputer control hysteresis comparator by the method of combining the software and hardware. Meanwhile this article studies the self-adaptation control algorithm to control the PWM. This way greatly improves the power factor of system. This article analyzes the interference of the electronic load and designs the scheme of linear opto-couple. In order to ensure security and integrity of the data, the protection circuit and the communication interface are added at the end of the load. Finally the experimental results show that the power factor of system has in- creased by 0.93 and verify the feasibility of the study. Keywords Linear Integral, Electronic Load, Adaptive Control Algorithm, Power Factor 基于双闭环线性积分的高功率因数直流电子负 载研究