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METHOD AND APPARATUS FOR SPEED REVERSAL CONTROL OF MOTOR DRIVE

  • US 20160218657A1
  • Filed: 01/28/2015
  • Published: 07/28/2016
  • Est. Priority Date: 01/28/2015
  • Status: Active Grant
First Claim
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1. A method for speed reversal control in a motor drive with an inverter driving a motor through an output filter and a transformer to reverse rotation of the motor from a first direction to an opposite second direction, the method comprising:

  • operating the inverter to drive the motor according to a high or maximal drive current command while the motor is rotating in the first direction to facilitate dissipation of regenerative energy in the motor drive; and

    operating the inverter to drive the motor using open loop control according to the high or maximal drive current command while transitioning the motor speed through zero to reverse rotation of the motor from the first direction to the second direction.

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