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1. JP2000236666 - POWER SUPPLY

Office Japan
Application Number 1999038513
Application Date 17.02.1999
Publication Number 2000236666
Publication Date 29.08.2000
Grant Number 3377959
Grant Date 06.12.2002
Publication Kind B2
IPC
H02M 7/06
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
02Conversion of ac power input into dc power output without possibility of reversal
04by static converters
06using discharge tubes without control electrode or semiconductor devices without control electrode
CPC
H02M 1/4266
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
4208Arrangements for improving power factor of AC input
4266using passive elements
Y02B 70/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
70Technologies for an efficient end-user side electric power management and consumption
10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Y02P 80/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
80Climate change mitigation technologies for sector-wide applications
10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Applicants MATSUSHITA ELECTRIC IND CO LTD
パナソニック株式会社
Inventors MAEDA SHIRO
前田 志朗
Agents 池内 寛幸
佐藤 公博
Title
(EN) POWER SUPPLY
(JA) 電源装置
Abstract
(EN)

PROBLEM TO BE SOLVED: To satisfy both high power factor and harmonics suppression by connecting a capacitor between the AC input terminal and DC output terminal of a bridge rectifier circuit.

SOLUTION: A power supply is provided with an AC power supply 6, a bridge rectifier circuit 5 formed of four diodes 1-4 for full-wave rectification of the AC voltage from the AC power supply 6, a reactor connected between the AC power supply 6 and an AC input terminal 5b, a capacitor 9 connected between an AC input terminal 5a and a DC output terminal 5c, and a smoothing capacitor 8. A resonance current flows through the reactor 7 and the capacitor 9 during half period of AC input to increase Vc from zero to Vo through the charging of the capacitor 9. The Vc decreases from Vo to zero during next half period of AC input through the discharge of the capacitor 9, and a smooth current of series resonance flows from zero phase of the input voltage.

COPYRIGHT: (C)2000,JPO