摘要
针对串电阻调速电机车存在的弊端,提出进行斩波调速改造,以多只功率MOSFET并联作为开关管设计直流斩波驱动器,对电机车2台22 kW直流电机分别进行驱动,每路最大输出电流为150 A。双向牵引和制动能相互自如转换,应用PLC统一进行控制,操作方便,并设计了保护和故障报警电路。
In view of the drawbacks existed in speed regulation of electrical locomotive with series resistance, the transformation of chopping speed regulation is put forward. Introduces that chopping DC drives designed with several parallel power MOSFET drive two 22 kW electromotor separately, and each output current can reach 150 A. Bidirectional traction and applying the brake can transform smoothly controlling by PLC, the op- eration is very easy and safeguard circuit which can give an alarm if abnormal functioning is designed.
出处
《煤矿机械》
北大核心
2007年第9期151-153,共3页
Coal Mine Machinery
关键词
电机车
斩波调速
MOSFET
改造
electrical locomotive
chopping speed regulation
MOSFET
transformation
