Title:
直流電源装置および圧縮機駆動装置
Document Type and Number:
Japanese Patent JP4706349
Kind Code:
B2
Abstract:
A simple circuit arrangement reduces high frequency current and improves the input power factor in a direct current power supply apparatus having a three-phase input, a DC power supply control method, and a compressor drive apparatus using this direct current power supply apparatus. In a direct current power supply apparatus having a three-phase AC supply (1), reactors (2U, 2V 2W), a bridge rectifier circuit (3), an electrolytic capacitor (4), two-way switches (6U, 6V, 6W), capacitors (7U, 7V, 7W), a phase detection means (8) for detecting a specific phase of each phase voltage, and a two-way switch control means (9), and in a compressor drive apparatus using this direct current power supply apparatus, the two-way switches are turned on/off every half cycle of each phase voltage of the three-phase AC supply (1) to repeatedly and alternately charge and discharge the capacitors through the reactors, thereby reducing high frequency current components and improving the input power factor.
More Like This:
| WO/2012/117675 | BOOST PFC CONTROL DEVICE |
Inventors:
Yoshihiko Takeda
Maeda Shiro
Maeda Shiro
Application Number:
JP2005178782A
Publication Date:
June 22, 2011
Filing Date:
June 20, 2005
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H02M7/12
Domestic Patent References:
| JP2003106616A | ||||
| JP2001224178A | ||||
| JP2004166359A | ||||
| JP8322255A | ||||
| JP7322630A | ||||
| JP9182413A | ||||
| JP9121545A | ||||
| JP2003174779A | ||||
| JP10174442A |
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii