电气传动2019，Vol.49Issue(2)：23-27,73,6.DOI:10.19457/j.1001-2095.dqcd18418
等离子切割机半桥逆变电源的均压设计
Voltage Sharing Design of Half-bridge Inverted Power Supply for Plasma Cutting Machine
袁乐 1蔡子琨 1杨喜军 1唐厚君 1田威 2谢伟新2
作者信息
- 1. 上海交通大学电气工程系,上海 200240
- 2. 江苏博大数控成套设备有限公司,江苏 江阴 214445
- 折叠
摘要
Abstract
Half bridge inverter type DC-DC converter is widely employed as plasma cutting machine power supply. It has the advantages of simple structure,easy control and low cost,but has the DC capacitor voltage balancing problem,which is the key problem of long-term operation of cutting machine. The effects of voltage sharing and energy storage of the capacitors were analyzed with different capacitances,and a steady passive voltage sharing method and a dynamic active voltage sharing on the basis of voltage deviation were put forward,and the PI controller over output current was adopted. Eventually,the plasma cutting machine with continuous output current at 35～105 A was prototyped, when fed by 380 V three-phase power supply,the voltage deviation across the two capacitors fell into ±10 V.关键词
等离子切割机/半桥逆变电源/电容串联/动态有源均压/静态无源均压Key words
plasma cutting machine/half-bridge inverter/capacitor series connection/dynamic active voltage sharing/steady passive voltage sharing分类
信息技术与安全科学引用本文复制引用
袁乐,蔡子琨,杨喜军,唐厚君,田威,谢伟新..等离子切割机半桥逆变电源的均压设计[J].电气传动,2019,49(2):23-27,73,6.
