摘要
针对目前煤矿采用两电平拓扑的1 140 V变频器存在的问题,提出一种矿用1 140 V的三电平变频器,它具有成本低、体积小、输出指标好等优点。着重对三电平拓扑的中点电位平衡问题从控制算法上进行了研究,阐明了该矿用1 140 V三电平变频器对比两电平变频器的优点。
In view of the current mining using two-level topology of the 1 140 V converter problems, a kind of 1 140 V three-level converter for mining has been put forward, which has the advantages such as low cost, small size and good output index. The neutral point potential balancing problem of three-level topology was emphatically solved based on the control algorithm, and the advantages of the mine 1 140 V three-level converter in comparison with the two-level converter were compared in detail.
出处
《煤矿机电》
2017年第6期14-15,19,共3页
Colliery Mechanical & Electrical Technology
关键词
三电平
变频器
中点电位平衡
五电平阶梯波
开关频率
three-level
converter
neutral point potential balance
five-level step wave
switching frequency
