Title :
A novel concept to reduce the DC-link capacitor in PFC front-end power conversion systems
Author :
Wang, Huai ; Chung, Henry
Author_Institution :
Centre for Power Electron., City Univ. of Hong Kong, Kowloon, China
Abstract :
A series voltage compensator is proposed for power factor corrector (PFC) in power conversion systems. The introduced concept can reduce the dc-link capacitors used for balancing input and output power, limiting voltage ripple and maintaining certain period of hold-up time if required. Therefore, it allows replacing aluminum electrolytic capacitors by alternative ones with long lifetime while achieving high power density and cost effectiveness. The voltage compensator processes the ripple voltage of the dc-link and supplies reactive power only. It can be implemented by low voltage switching devices and passive components. Simulated and experimental results of a boost PFC converter verify the theoretical predications.
Keywords :
electrolytic capacitors; power conversion; power convertors; power factor correction; reactive power; DC-link capacitor; PFC front-end power conversion system; aluminum electrolytic capacitor; boost PFC converter; cost effectiveness; hold-up time maintenance; input power balancing; output power balancing; passive component; power density; power factor corrector; reactive power; ripple voltage; series voltage compensator; voltage switching device; Capacitance; Capacitors; Films; Low voltage; Power conversion; Reactive power; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
DOI :
10.1109/APEC.2012.6165970
