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Motor-generator system

  • US 10,245,971 B2
  • Filed: 03/06/2017
  • Issued: 04/02/2019
  • Est. Priority Date: 03/06/2017
  • Status: Active Grant
First Claim
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1. A motor-generator system comprising:

  • an internal combustion engine;

    a motor-generator in driven engagement with the internal combustion engine by an endless belt, the motor-generator comprising;

    a controller detecting a speed signal of the internal combustion engine, a driver input signal, a battery state signal and a motor-generator signal;

    the motor-generator operable to provide a motoring torque or a load torque to the internal combustion engine at a predetermined frequency of rotary vibration according to a controller command; and

    the controller controlling the motor-generator torque at a frequency greater than 1 Hz such that when the internal combustion engine accelerates, the motoring torque is applied to speed the motor-generator rotation, and when the internal combustion engine decelerates, the load torque is applied to slow motor-generator rotation such that motor-generator rotation is controlled to attenuate a system vibration.

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