Title:
UNINTERRUPTIBLE POWER SUPPLY APPARATUS
Document Type and Number:
Japanese Patent JP3246138
Kind Code:
B2
Abstract:
PURPOSE: To obtain an uninterruptible power supply apparatus which lowers the peak of a load current when a load is a nonlinear load, which enhances the efficiency of the load and which lowers the effective load current.
CONSTITUTION: A waveform instruction signal V1 which is obtained on the basis of the output signal of a reference sine-wave generation circuit 12 and of the output feedback voltage of an inverter 4 and an inverter output feedback voltage V0 are input to a waveform control circuit 14. In addition, also the detection signal Vio of the output load current of the inverter 4 is fed back to the waveform control circuit 14. A PWM control circuit 15 is driven by an error signal which is output from the waveform control circuit 14, and the inverter 4 is controlled.
Inventors:
Katsuji Masaki
Application Number:
JP29772793A
Publication Date:
January 15, 2002
Filing Date:
November 29, 1993
Export Citation:
Assignee:
Shin-Kobe Electric Machinery Co., Ltd.
International Classes:
H02J9/06; H02J3/38; H02J3/46; H02M7/48; (IPC1-7): H02M7/48; H02J3/38; H02J3/46; H02J9/06
Domestic Patent References:
| JP515164A | ||||
| JP5227762A | ||||
| JP62178127A |
Attorney, Agent or Firm:
Hidetoshi Matsumoto (1 outside)