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1. WO2012058904 - CENTRALIZED DC POWER SUPPLY SYSTEM FOR LEDS AND OPERATION METHOD THEREOF

Publication Number WO/2012/058904
Publication Date 10.05.2012
International Application No. PCT/CN2011/072899
International Filing Date 16.04.2011
IPC
H05B 37/00 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
37Circuit arrangements for electric light sources in general
H05B 37/02 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
37Circuit arrangements for electric light sources in general
02Controlling
H02M 7/23 2006.01
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
12using discharge tubes with control electrode or semiconductor devices with control electrode
21using devices of a triode or transistor type requiring continuous application of a control signal
217using semiconductor devices only
23arranged for operation in parallel
CPC
H02M 7/23
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
12using discharge tubes with control electrode or semiconductor devices with control electrode
21using devices of a triode or transistor type requiring continuous application of a control signal
217using semiconductor devices only
23arranged for operation in parallel
H05B 45/37
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
37Converter circuits
H05B 45/39
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
37Converter circuits
3725Switched mode power supply [SMPS]
39Circuits containing inverter bridges
H05B 45/46
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
40Details of LED load circuits
44with an active control inside an LED matrix
46having LEDs disposed in parallel lines
H05B 47/10
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
47Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
10Controlling the light source
Applicants
  • 华南理工大学 SOUTH CHINA UNIVERSITY OF TECHNOLOGY [CN]/[CN] (AllExceptUS)
  • 张波 ZHANG, Bo [CN]/[CN] (UsOnly)
  • 张桂东 ZHANG, Guidong [CN]/[CN] (UsOnly)
  • 肖文勋 XIAO, Wenxun [CN]/[CN] (UsOnly)
  • 丘东元 QIU, Dongyuan [CN]/[CN] (UsOnly)
Inventors
  • 张波 ZHANG, Bo
  • 张桂东 ZHANG, Guidong
  • 肖文勋 XIAO, Wenxun
  • 丘东元 QIU, Dongyuan
Agents
  • 广州粤高专利商标代理有限公司 YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY
Priority Data
201010528546.602.11.2010CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) CENTRALIZED DC POWER SUPPLY SYSTEM FOR LEDS AND OPERATION METHOD THEREOF
(FR) SYSTÈME D'ALIMENTATION CC CENTRALISÉ POUR DELS ET SON PROCÉDÉ DE FONCTIONNEMENT
(ZH) 一种LED集中式直流供电系统及其运行方法
Abstract
(EN)
A centralized direct current (DC) power supply system for light-emitting diodes (LEDs) and an operation method thereof. The system includes three-phase input interfaces (Ua, Ub, Uc), power supply output interfaces, N+1 three-phase pulse width modulation (PWM) rectifying power supply modules (1, 2,……, N, N+1), N load modules and a power supply management module. The power supply management module samples the output voltage and the output current of a positive and a negative output bus, the voltages and the currents of three-phase input terminals, and the control signals and the outputs of the three-phase PWM rectifying power supply modules, and then adjusts the duty cycles of the three-phase PWM rectifying power supply modules, so as to output an adjustable DC voltage. The output power of the power supply system and the operation method thereof is high and can be supplied for the LEDs of entire lines directly. With the N+1 three-phase PWM rectifying power supply modules, a redundant power supplying by N+1 power supplies can be achieved, so that it is convenient for the system to be maintained and the system is high in reliability.
(FR)
L'invention concerne un système d'alimentation CC centralisé destiné à des diodes électroluminescentes (DELS), et son procédé de fonctionnement. Ce système comprend des interfaces d'entrée triphasées (Ua, Ub, Uc), des interfaces de sortie d'alimentation, des modules d'alimentation de redressement (1, 2,……, N, N+1) à modulation de largeur d'impulsion (PWM) triphasée N+1, des modules de charge N et un module de gestion d'alimentation. Ce module de gestion d'alimentation échantillonne la tension de sortie et l'intensit de sortie d'un bus à sortie positive et à sortie négative, les tensions et les intensités de bornes d'entrée triphasées, et les signaux de commande et les sorties des modules d'alimentation de redressement (1, 2,……, N, N+1) à PWM triphasée, et règle les cycles de travail de ces modules de manière à produire une tension CC réglable. La puissance de sortie du système d'alimentation et du procédé de fonctionnement de celui-ci est élevée et peut être directement fournie à la totalité des DELS d'une ligne. Les modules d'alimentation de redressement à PWM triphasée N+1 permettent d'obtenir une puissance redondante fournie par des alimentations N+1 de sorte que la maintenance du système est aisée et que sa fiabilité est élevée.
Also published as
Latest bibliographic data on file with the International Bureau