Return to search

Parallel Operation of Modular Power Factor Correctors with Flyback Converters

To fulfill the requirements of the operation in a wide power range, a parallel configuration with modular power factor correctors (PFCs) is proposed. Each PFC module is composed of a bridge-rectifier, a fly-back converter and associated passive filters. The fly-back converter is independently operated at a fixed frequency with a discontinuous inductor current. This allows the modules to achieve a high power factor and to regulate the output power with simple control. With the same duty-ratio and frequency, the total current will be distributed equally to each operating module without complex current sharing control. The operating modules are equally phase-shifted to take the advantages of the continuous current mode when operated at a higher power.
Experiments were conducted to achieve a power rating of 1 kVA by operating 10 PFC modules in parallel. The duty-ratio of the operating modules is controlled by a micro-controller to regulate the output power in accordance with the load requirement. A complex programmable logic device (CPLD) is used for phase-shifting. All modules are operated in turn to share the operating cycles in a more equal manner. Experimental results demonstrate the parallel configuration can achieve the expected performances.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0703106-214356
Date03 July 2006
CreatorsHsiao, Ying-Nan
ContributorsChin-Sien Moo, Jia-You Lee, Mu-Ping Chen, Ching-Ran Lee, Yong-Nong Chang
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0703106-214356
Rightsunrestricted, Copyright information available at source archive

Page generated in 0.0018 seconds