电气传动2017，Vol.47Issue(4)：31-34,4.DOI:10.19457/j.1001-2095.20170407
基于Crowbar电路防止逆变颠覆的斩波串级调速系统
Chopper Cascade Speed Control System Based on Crowbar Circuit to Prevent Inverter Commutation Failure
苑亚敏 1王兵树 2张照彦 1李茹 2王占同1
作者信息
- 1. 保定华仿科技股份有限公司,河北 保定 071051
- 2. 华北电力大学产业管理处,河北 保定 071003
- 折叠
摘要
Abstract
The main components SCR inverter of conventional chopper cascade speed control system are prone to commutation failure to damage the equipment,the protection mechanism of vacuum contactor and the fast fuse cannot instantaneous work,which result in short-term protection blank area. The Crowbar resistance circuit was designed,the fault transient process was analyzed,the mathematical model was established,the model of simulation was established to verify the production of experimental prototype. Experiments show that the Crowbar circuit can be connected to the main circuit in the time of the micro-second level,to limit the fault current rise,and to prevent further expansion of the fault. It may be appropriate to the actual project trial promotion.关键词
Crowbar电路/斩波串级调速/暂态分析/逆变颠覆Key words
crowbar circuit/chopper cascade speed control system/transient analysis/inversion subversion分类
信息技术与安全科学引用本文复制引用
苑亚敏,王兵树,张照彦,李茹,王占同..基于Crowbar电路防止逆变颠覆的斩波串级调速系统[J].电气传动,2017,47(4):31-34,4.
