The torque-ripples of the double-salient motor are inevitable for its double salient structure and switch power source.

双凸极电机的凸极结构及其供电电源的开关形式 ，导致了在输出转矩中存在稳态转矩脉动和换向转矩脉动。

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Welding machine control unit is equiped with no power source arc start unit, CMOS, and high power switch.

该焊机采用“无源引弧器”引弧，引入CMOS、时基、大功率开关等集成电路进行弧焊自动控制。

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Compared with traditional control method, a digital control method of soft-switch arc welding power source is put forward.

在与传统的弧焊电源控制比较的基础上，提出了一种软开关弧焊逆变电源的数字控制方案。

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On the other hand, this conflation makes far more sense in the long term, as our electrical grid becomes more sophisticated, and as electric vehicles begin the inevitable switch from internal combustion engines to electric motors or some other renewable source of power.

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The switch to Sunoco Green E15, the official fuel of NASCAR and a renewable, low-carbon power source, reduced greenhouse gas emissions by 20% compared with unleaded gas.

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