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Motor drive control device

  • US 8,381,644 B2
  • Filed: 02/02/2010
  • Issued: 02/26/2013
  • Est. Priority Date: 02/02/2009
  • Status: Active Grant
First Claim
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1. A motor drive control device including a power supply converter that is connected to an alternating-current power supply, a voltage detector that detects a direct-current voltage of the power supply converter, an inverter that is connected to a motor, and an energy storage device that is connected to a direct-current bus that connects the power supply converter and the inverter, the motor drive control device comprising:

  • a power-running operation voltage setting section that sets a power-running operation voltage of the power supply converter;

    a power-running operation start control section that causes the power supply converter to start a power-running operation when the direct-current voltage of the power supply converter is equal to or lower than the power-running operation voltage set by the power-running operation voltage setting section;

    a power-running operation stop control section that causes the power supply converter to stop the power-running operation when the direct-current voltage of the power supply converter has exceeded the power-running operation voltage set by the power-running operation voltage setting section;

    a regenerative operation voltage setting section that sets a regenerative operation voltage of the power supply converter;

    a regenerative operation start control section that causes the power supply converter to start a regenerative operation when the direct-current voltage of the power supply converter is equal to or higher than the regenerative operation voltage set by the regenerative operation voltage setting section; and

    a regenerative operation stop control section that causes the power supply converter to stop the regenerative operation when the direct-current voltage of the power supply converter is lower than the regenerative operation voltage set by the regenerative operation voltage setting section.

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