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At what voltage does the Model S motor work ?

Discussion in 'Technical' started by joer00, Feb 9, 2013.

  1. joer00

    joer00 Member

    Jan 26, 2013
    Sorry if that was asked before, I just did not find anything. After my test drive seeing about 320KW coming out of the battery to the motor I was wondering how the cables look ! At 320 volts that would be 1000 amps !

    Does anybody know at what voltage the motor runs and how they get this power to the inverter ? Each battery just has a few watts, are they connected in parallel or serial or a combination of both ?

  2. TEG

    TEG TMC Moderator

    Aug 20, 2006
    Silicon Valley
    Some Roadster battery discussion here might give you some clues:
    Technical Battery Discussion | Forums | Tesla Motors

    Model S has the inverter directly part of the same housing with the motor, so there doesn't need to be the 4 wires for 3 phase AC going externally from the motor.
    I think it is true that the inverter sends 1000amps+ at 300+ volts to the motor. In ModelS, I am not sure what the pack voltage (and thus amps) is going into the inverter.
    The inverter can do "boost/buck" type things, so it is possible that the pack voltage is different from motor voltage.

    In any case, it does need very fat wires going from battery to inverter.
    This picture gives you some idea of the size:

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