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Commutation table clarification

Discussion in 'General Electronics Chat' started by elecLear78, Aug 17, 2017.

  1. elecLear78

    elecLear78 Member

    Joined:
    Jul 16, 2013
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    Location:
    india
    I have seen the following commutation table
    upload_2017-8-17_14-8-28.png
    So when Hall A is 0 Hall B is 0 and Hall C is 1 which is sector 1 that is 0 to 60 degrees from the above diagram. My question is this will be true for all motors? In the sense that for some motors for the same sequence it can be sector 3 as well?
    And one more doubt as per the hardware i have seen generally we give Bus voltage of +V and the negative will be ground. But in the diagram i am seeing it is +V and -V volts. So the above is specific to that particular hardware or the -V voltage is always generated because of inductance? Please suggest.
     

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