Motor driving apparatus
First Claim
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1. A motor driving apparatus comprising:
- an inverter circuit for driving a motor;
a power source rectifier circuit for rectifying AC electric power to DC electric power;
a DC link for connecting said inverter circuit with said power source rectifier circuit; and
a power storage part that is connected with said DC link and that stores electrostatic energy by means of DC link voltage generated in said DC link,wherein the voltage appearing at an output of said power storage part due to said stored electrostatic energy is boosted, andthe electric power having the boosted voltage is converted into AC electric power and fed to said AC electric power source.
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Abstract
The present invention is directed to the provision of a servomotor driving apparatus that feeds energy stored in a power storage part connected with a DC link that connects a rectifier circuit with an inverter circuit so that the energy stored in the power storage part can be reduced. A motor driving apparatus (1) includes: a step-up type DC/DC converter circuit (11) for boosting voltage appearing at an output of the power storage part (C1) connected with a DC link; and a DC/AC conversion circuit (12, 14) for converting the boosted DC electric power into AC electric power and feeding it to an electric power source.
27 Citations
4 Claims
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1. A motor driving apparatus comprising:
- an inverter circuit for driving a motor;
a power source rectifier circuit for rectifying AC electric power to DC electric power;
a DC link for connecting said inverter circuit with said power source rectifier circuit; and
a power storage part that is connected with said DC link and that stores electrostatic energy by means of DC link voltage generated in said DC link,wherein the voltage appearing at an output of said power storage part due to said stored electrostatic energy is boosted, and the electric power having the boosted voltage is converted into AC electric power and fed to said AC electric power source. - View Dependent Claims (2, 3, 4)
- an inverter circuit for driving a motor;
Specification