SVPWM technique have many good qualities, such as less pulsating torque, high usage of DC bus voltage, less switching loss, better high-speed regulation performance.

SVPWM具有较高的直流电压的利用率，开关损耗小，从而实现了高性能的逆变输出。

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When the HV station service bus is switching, the transient of the large sized asynchronous motor is analyzed and a method of inducing the impulse current is introduced.

介绍了大型火电机组高压厂用母线切换时的情况，对大型异步电动机切换时的暂态过程进行了数学分析，介绍了减少切换时冲击电流的方法。

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For the receiving end, a new switching criterion based on the bus voltage is described, which is immune to the system parameters.

对受端继电器，提出仅利用保护安装处的电压变化值构成同相点切换判据，可以有效降低系统参数的影响。

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Officials feared the brackish storm water that poured into tunnels could corrode vulnerable signal and switching systems, complicating the task of reopening a bus and rail system that ferries 8.5 million passengers on a typical workday.

WSJ: Superstorm Sandy Cuts Wide Swath of Damage

That's because the city has equipped three bus routes with wireless technology that can pull off a trick every commuter has dreamed of: switching a red light to green on command.

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