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  1. #1
    Join Date
    Jun 2011
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    How to select frequency converter to control a domestic refrigerator compressor


    Hi guys. I want to control a variable speed compressor installed on a domestic refrigerator. But this is the first time I work on this so I really do not have any idea about this. How can I select a frequency converter to control a variable speed compressor? Which specifications, features I have to consider? Thanks in advance.



  2. #2
    Join Date
    Feb 2012
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    Bolivia
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    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:
    http://www.danfoss.com/Pacific/Produ...a971ec28c.html

    or here
    http://www.emersonclimate.com/en-us/...ed_drives.aspx

    But I’d suggest you use one of these:
    http://www.danfoss.com/Pacific/Produ...ffccf0b9c.html
    Well, did anybody ever dream of calling Aramis a coward? No, certainly not!

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