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PWM converters


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Hello Lakshmikantha


If the converter is being used to rectify an AC waveform to produce DC, then it can be designed using Thyristors, or a PWM converter.

The advantage of the PWM converter is that is has a low distortion, (good power factor) but it has a high cost. The advantage of the thryistor converter is that it is lower cost but has a poor power factor.

In the commercial world, if there is no appreciable value in the technical advantage, then the cost wins out.


An active front end drive is an example of a PWM converter input and is considerably more expensive than the non active front end drive. (non PWM)


Best regards,

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