基于H桥单元串联式多电平高压变频器在矿井提升机中的应用

Application of Cascaded High-voltage Frequency Converter with Multi-level Based on H-bridge Unit in Mine Hoist

1.
School of Information and Electrical Engineering of CUMT.,Xuzhou 221008,China.2.Xuzhou Baodi Electric Co.,Ltd.,Xuzhou 221008,China

摘要: 针对某煤矿的主井提升机系统采用电动机转子串电阻调速方式存在运行损耗大的缺点,文章提出了一种对提升机电控系统进行H桥功率单元串联式多电平高压变频改造的方案,详细介绍了提升机PLC工艺控制系统的结构、主要技术特点以及变频传动系统实现的基本原理。实际应用表明,经改造后的矿井提升机高压变频系统运行稳定,完全达到了设计要求。
- 矿井提升机 /
- 电控系统 /
- 高压变频器 /
- 调速 /
- H桥 /
- 功率单元 /
- 多电平
Abstract: Aiming at the existed shortage of great running consumption that main mine hoist system of one coal mine used speed-regulation mode of serial rotor resistance of motor,the paper proposed a reform scheme of cascade high-voltage frequency-conversion with multi-level based on H-bridge power unit for electric control system of hoist,introduced structure and main technology characteristics of PLC technology control system of hoist and basic principle of implementation of frequency-conversion driving system.The practical application showed that the reformed high-voltage frequency-conversion system of mine hoist ran stably and achieved design demand completely.
- mine hoist /
- electric control system /
- high-voltage frequency converter /
- speed-regulation /
- H-bridge /
- power unit /
- multi-level