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Title:
インバータ装置
Document Type and Number:
Japanese Patent JP5169205
Kind Code:
B2
Abstract:

To provide an inverter system having a large braking torque, i.e. high braking performance, under conditions that a motor loss is large but a dc voltage does not become excessive at braking, while the inverter system is designed to suppress the motor loss at power running.

The inverter system includes dc power supply 5 which generates the dc voltage from ac power supply 1, an inverter circuit 6 which outputs ac power supply of a frequency different from the ac power supply 1 from the dc power supply 5, and a motor 7 which receives an output of the inverter circuit 6. In a current waveform at braking between the inverter circuit 6 and the motor 7, its distortion is made larger than that at the power running, so that the loss in the motor 7 at braking can be increased, and the large braking torque can be obtained under the condition that an overvoltage of the dc power supply 5 is not generated.

COPYRIGHT: (C)2009,JPO&INPIT


Inventors:
Kazuhiko Asada
Application Number:
JP2007329702A
Publication Date:
March 27, 2013
Filing Date:
December 21, 2007
Export Citation:
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Assignee:
SAMSUNG ELECTRONICS CO.,LTD.
International Classes:
H02P3/18; D06F33/02; H02P21/00; H02P21/36; H02P27/04
Domestic Patent References:
JP2005102385A
JP9009661A
JP2003047793A
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii