2019
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05
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25
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30
Abstract: Variable frequency speed regulation is widely used for its excellent speed regulation and braking performance, high efficiency, high power factor and energy saving effect. The use of SINCR medium voltage frequency converters in the water supply industry can effectively extend the life of the motor and reduce the impact on the waterway.1.IntroductionThe industrial pump house of the water plant has been in full load after the pump is turned on, and the water consumption varies with production. Therefore, it is necessary to frequently start and stop the pump or use a baffle, a valve, et...