Title :
Hold-up time analysis of a dc-link module with a series voltage compensator
Author :
Wang, Huai ; Liu, Wenchao ; Chun, Henry
Author_Institution :
Centre for Power Electron., City Univ. of Hong Kong, Kowloon, China
Abstract :
A dc-link module composed of dc-link capacitors and a series voltage compensator has been proposed. It has been verified that the module can reduce the dc-link capacitance to 10-20% while achieving a very low voltage ripple across its output terminals. This paper investigates the required dc-link capacitance when a certain period of hold-up time is considered. Trade-off design conditions are presented and the hold-up time is compared with the solution without the series voltage compensator. The analysis is crucial to power converters connected to critical loads when hold-up time is required. The theoretical predictions have been verified by experimental results.
Keywords :
power capacitors; power convertors; DC link capacitance reduction; DC link capacitor; DC link module; critical loads; hold up time analysis; low voltage ripple; series voltage compensator; Capacitance; Capacitors; Energy storage; Guidelines; Power electronics; Steady-state; Stress;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342696
