Develop a converter that cleans electrical energy. The so-called clean electrical converter refers to the power factor of the converter is 1, the network side and the load side have the lowest possible harmonic components, in order to reduce the pollution to the power grid and the torque pulsation of the motor. For medium and small capacity converters, the PWM control to increase the switching frequency is effective. For large-capacity converters, under the conventional switching frequency, the circuit structure and control mode can be changed to realize the transformation of clean electrical energy.
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