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Thread: Three Phase Motor from Washing Machine

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    buddyman100's Avatar
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    Three Phase Motor from Washing Machine

    In this youtube video I took apart a washing machine and found a three phase motor and potentially a Variable Frequency Drive. If you have any questions about the build feel free to leave a question in the comment section of the youtube video. If you like seeing content like this check out my youtube.
    YT: https://www.youtube.com/channel/UCRL...cNRku7Gtj29qXQ

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    Carnel's Tools
    Hi Buddyman100, The ISKRA module you showed is an interference filter. It filters out high frequency signals which are produced as a by-product of the generation of the variable frequency motor voltage and current. Variable frequency electronics is notorious for generating a lot of electromagnetic noise.

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    Thank you for the info. Now I just need to figure out how to wire the VFD.

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    Carnel's Tools
    Hi Buddyman100, Very important is to encapsulate the VFD in a thoroughly closed metal case. You can use alu (at least 2 mm thick) or soft steel. Ideally mu-metal but that's very expensive and must be treated with caution. Avoid (small) slots in the case that can act as antenna's for the interfering frequencies. Connect to the wall socket as well to the motor via filters from the type you showed. Use shielded cord of good quality for the motor connection with the shield thoroughly connected to the case. Mount the filters as close as possible to the wall of the case in order to let the outside connections to the filter as short as possible.
    Both current wires of a cord are connected to one side of the filter. The other side of the filter is connected to the electronics. The midpoint of the two capacitors is connected to the earth connection of the wall socket and to the case. Use thick wire preferable multi stranded wire.
    I hope this will be helpful.

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    Thank you for the information!


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