Title:
PWM CONTROL SELF-OSCILLATION TYPE RECTIFYING APPARATUS
Document Type and Number:
Japanese Patent JP3257376
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To overcome a problem by erroneous wiring of cables by outputting a phase difference compensating value with any one phase of the angle data and input phase voltage of the phase sequence detecting means.
SOLUTION: An angle data generating means 41 generates an angle data synchronized with the phase of the first phase voltage in the side of commercial power supply 1 of an input filter 2 via an insulating converter 15. A phase sequence detecting means outputs a phase sequence signal from two phase voltages in any one of the PWM control self-oscillation type rectifying apparatuses 40, 50. A phase difference detecting means outputs a phase difference compensating signal with any one phase of two phase voltages of the angle data and an input of the phase sequence detecting means. An angle signal converting means generates an angle signal synchronized with the phase voltage in the input side of the MWM control self-oscillation type rectifying apparatuses 40, 50 by means of the angle data and phase difference compensating signal. The angle signal arithmetic means 42 or 51 is formed of these apparatuses.
Inventors:
Toshiyuki Sasaki
Application Number:
JP29077795A
Publication Date:
February 18, 2002
Filing Date:
November 09, 1995
Export Citation:
Assignee:
Fuji Electric Co., Ltd.
International Classes:
G01R25/00; H02M7/12; H02M7/219; (IPC1-7): H02M7/219; G01R25/00
Domestic Patent References:
| JP7288982A | ||||
| JP3212162A | ||||
| JP7213067A | ||||
| JP5134773A |
Attorney, Agent or Firm:
Masaharu Shinobe
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