比例电磁铁推拉储能式PWM功放电路  

Push-pull Energy Storage PWM Power Amplifier Circuit of Proportional Electromagnet

作　　者：强彦[1] 杨丹丹 孙辉 赵保才 邹洪波[3] 魏列江[1] QIANG Yan;YANG Dan-dan;SUN Hui;ZHAO Bao-cai;ZOU Hong-bo;WEI Lie-jiang(Energy and Power Engineering College,Lanzhou University of Technology,Lanzhou,Gansu 730050;Jiangsu Advanced Construction Machinery Innovation Center Ltd.,Xuzhou,Jiangsu 221004;School of Automation,Hangzhou Dianzi University,Hangzhou,Zhejiang 310018)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]江苏汇智高端工程机械创新中心有限公司,江苏徐州221004 [3]杭州电子科技大学自动化学院,浙江杭州310018

出　　处：《液压与气动》2022年第10期50-56,共7页Chinese Hydraulics & Pneumatics

基　　金：国家重点研发计划(2020YFB2009800)。

摘　　要：针对传统脉冲宽度调制(Pulse Width Modulation, PWM)功放电路难以满足大功率高频响比例电磁铁线圈快速充放电要求的问题,提出一种基于推拉储能原理的PWM功放电路。在比例电磁铁功放电路中设置储能模块,当线圈需要快速充电时,储能模块释放能量,补充供电电源电流输出;当线圈需要快速放电时,储能模块充电吸收能量,从而缩短线圈的充放电时间。针对功率79 W、额定电流3.3 A的某比例电磁铁线圈进行仿真分析和实验,研究表明:相比传统的反接卸荷式功放电路,该推拉储能式PWM功放电路充电时间缩短24%,放电时间缩短45%,显著提高了大功率比例电磁铁的响应速度。The traditional power amplifier circuit is difficult to satisfy with the request of fast charging and discharging of the high-power and high-response proportional electromagnet coil. Aiming at the issue, a push-pull energy storage PWM power amplifier circuit is proposed. By setting the energy storage module in the proportional electromagnet power amplifier circuit, the charging and discharging time of the coil is shortened. When the coil needs to be quickly charged, the energy storage module releases energy. When the coil needs to be quickly discharged, the energy storage module absorbs energy. Simulation analysis and experimental research on a certain proportion of electromagnet coil with power of 79 W and rated current of 3.3 A. The results are as follows, compared with the traditional reverse discharging power amplifier circuits, the charging time of the push-pull energy storage PWM power amplifier circuit is shortened by 24%, and the discharge time is shortened by 45%. The push-pull energy storage PWM power amplifier circuit significantly improves the response speed of the high-power proportional electromagnet.

关 键 词：比例电磁铁 功放电路 推拉储能 PWM 

分 类 号：TH137[机械工程—机械制造及自动化]