概述了雁崖矿交流电牵引采煤机的应用情况。
The paper introduces the application of electric haulage shearer.
阐述了变频调速技术在采煤机中的应用，介绍了交流电牵引采煤机工作原理及发展趋势。
The paper discusses the application of conversion speed regulated technique in shearer. It also introduces working principle and developing tendency of the shearer with ac electric traction.
在铁道电气化牵引区段，牵引供电网采用单相工频交流电供电方式。
On the railway of electrization, power supply mode is requested to be the single-phase alternating current.
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