Electric vehicle ( EV ) chargers are highly linear power system load.

电动汽车 充电机是非线性的设备,工作时产生的谐波电流很高.

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Why S . M. P . S instead of Linear Power Supply?

为什么采用开关电源代替线性电源?

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The advantages of a simple linear power supply, low cost, while the SMPS complicated and costly.

线性电源的优势在于简单 、 成本低, 而SMPS比较复杂,成本高.

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The traditionary linear power amplifier has been washed out for its low efficiency and big size.

传统的线性功率放大器由于效率低,体积大,因而已经被淘汰.

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The application of non - linear power components makes the harmonic pollution situation of power system increasingly severe.

非线性电力元件的应用使电力系统的谐波污染问题日益突出.

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