Power source regenerative apparatus
AssigneeFanuc Corporation
InventorsTakashi Harada, Eiichi Sasuga
Life of this patent
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Abstract
The present invention relates to a power source regenerative apparatus which prevents distortion of a voltage regenerating in the power source from being caused. An inverter transforms induction electromotive force caused in regenerating the power source, namely in decelerating the motor, into a direct current. A timing adjusting device outputs a regenerative signal ST at a predetermined timing before the potential of one phase indicative of the maximum potential in three-phase supply voltages becomes the same potential as that of another phase. Based on the regenerative signal ST, a converter converts the transformed direct current into an alternating current, and regenerates it to the power source.
Claims2
A power source regenerative apparatus for regenerating induction electromotive force caused in decelerating a motor to a power source, comprising:
- an inverter for transforming an induction electromotive force, caused in decelerating the motor, into a direct current, to regenerate the power source;
- timing adjusting means for outputting a regenerative signal at a predetermined timing before the potential of one phase indicative of the maximum potential in three-phase supply voltages becomes the same potential as that of another phase;
- and
- a converter for converting the direct current into an alternating current based on said regenerative signal, and for regenerating said alternating current to said power source.
Dependencies are inferred from the claim text.