POWER SUPPLY REGENERATIVE CONTROL METHOD AND POWER SUPPLY REGENERATIVE CONTROL DEVICE FOR POWER SUPPLY REGENERATIVE CONVERTER

摘要

PROBLEM TO BE SOLVED: To provide a power supply regeneration function equivalent to that of a conventional power supply regenerative converter while reducing costs and achieving a simple circuit by eliminating the need for a circuit to detect a peak value of an AC power supply that is required by the conventional power supply regenerative converter.;SOLUTION: A power supply regenerative converter includes: a phase detecting means for detecting a voltage phase of an AC power supply; a DC power supply output voltage detecting means for detecting a DC power supply output voltage being output of the power supply regenerative converter; a regenerative transistor for executing power supply regeneration operation to the AC power supply by switching the DC power supply output voltage; and a regenerative-signal generating means for generating an on/off drive signal of the regenerative transistor on the basis of a detection signal detected by the AC power supply voltage phase detecting means and a detection signal detected by the DC power supply output voltage detecting means. The DC power supply output voltage is detected and a voltage of the AC power supply is estimated so as to execute power supply regeneration when estimated that the voltage on the side of the AC power supply is in a low state.;COPYRIGHT: (C)2011,JPO&INPIT