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Vehicle power sharing and grid connection system for electric motors and drives

  • US 10,195,946 B2
  • Filed: 08/03/2017
  • Issued: 02/05/2019
  • Est. Priority Date: 04/04/2014
  • Status: Active Grant
First Claim
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1. Apparatus for sharing electric power between multiple energy sources in a vehicle or machine comprising:

  • an AC electric motor;

    a first motor drive inverter for delivering a first AC current to AC motor wires of said electric motor;

    a first source of DC power for delivering a DC voltage to said first motor drive inverter;

    a second motor drive inverter for delivering AC current to said AC motor wires of said electric motor;

    a second source of DC electric power for delivering a DC voltage to said second motor drive inverter;

    a controller connected to both of said first and second motor drive inverters containing basic operational parameters and providing an interface to the vehicle or machine, whereby said controller distributes power between said first and second sources of DC according to varying torque demands of said electric motor, and whereby said second source of DC has most of the power capacity of said power sharing system for providing short bursts of power when required by said motor; and

    a switch for interrupting connection between said two inverters during ground faults or other system errors.

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