With it, not only the technical performance of electrical haulage shearer is satisfied, but also the 1140V/380 transformer can be spared.

• 介绍一种采用1140V直接供电的开关磁阻电机调速系统,不仅满足电牵引采煤机的技术性能,还可节省机载的1140V/380V变压器,简化结构,提高可靠性。