Re: How to select frequency converter to control a domestic refrigerator compressor
You must get information from the compressor manufacturer first.
For an AC motor you have to control both frequency and voltage. Many VFDs don’t produce sinusoidal waves so you have to install filters or all your electronic controls will go crazy.
It is not a good idea to use a frequency converter on a small compressor. It is better to buy a variable speed compressor directly.
You can get information on variable speed drives from here:
But I’d suggest you use one of these:
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