US 2006/0066283 A1 · Motor driving apparatus

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.

Claims4

Dependent claims

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.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/234,144Filed 26 Sep 2005

Priority

JP 2004-28254628 Sep 2004

Published

30 Mar 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02M 7/53875
With automatic control of output voltage or current: with analogue control of three-phase output
H02M 5/4585
Using semiconductor devices only: having a rectifier with controlled elements
H02P 3/18
For stopping or slowing an individual dynamo-electric motor or dynamo-electric converter: for stopping or slowing an AC motor
H02M 1/008
Converter structures employing plural converter units, other than for parallel operation of the units on a single load: plural converter units for…

Motor driving apparatus

Life of this patent

Motor driving apparatus

Life of this patent

Abstract

Claims4