In this paper the eddy field of a CTD variable speed motor is analysed and calculated by the finite element method.

本文用有限元方法对CTD调速电动机的涡流场进行了分析和计算。

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Most of main pump in pump stations driven by variable speed motor for long distance transport petroleum engineering.

在长距离输油（气）管道工程中，大部分泵站内的主泵采用调速电机驱动。

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Variable frequency and variable speed motor system is of high intelligence, high reliability, fault-tolerant capability.

变频调速电动机系统具有高智能、高可靠性和高容错能力。

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