NDLI: Dead-time compensation method of a 600KW Electrical Balance Of Plant with LC filter for Molten Carbonate Fuel Cell

Content Provider	IEEE Xplore Digital Library
Author	Kwang-Seob Kim Tai-Sik Hwang Byung-Ki Kwon Ja-Sik Kim Chang-Ho Choi Sung-Gap Choi
Copyright Year	2009
Description	Author affiliation: POSCON Coporation R&D Center, Techno-Complex, 126-16, Anam-dong 5ga, Sungbuk-gu, Seoul, 136-701, Korea (Kwang-Seob Kim; Tai-Sik Hwang; Byung-Ki Kwon; Ja-Sik Kim; Chang-Ho Choi; Sung-Gap Choi)
Abstract	In this paper, we introduce a dead-time compensation method of a 600KW Electrical Balance Of Plant (EBOP) with LC filter for Molten Carbonate Fuel Cell (MCFC). LC filter is adopted to reduce harmonics generated by PWM inverter and a filter controller suppresses resonance of LC circuit. Dead-time is inserted to prevent a shoot-through of dc-link and lots of methods for dead-time compensation have been suggested. Most of dead-time compensation schemes use sensed inverter currents processed by low pass filter (LPF) to eliminate undesired noise. A time delay, i.e. a few tens of micro second, caused by LPF generates a relatively large phase delay of sensed current due to high frequency components of a stiff capacitor current which is dominant under lightly loaded condition. If inaccurate sensed currents are used to compensate dead-time, it can distort an output voltage of inverter and even makes LC filter control to be unstable. So, we propose dead-time compensation based on estimated currents instead of sensed currents. Test waveforms are presented to verify the proposed dead-time compensation method and LC filter control.
Starting Page	1652
Ending Page	1657
File Size	1278143
Page Count	6
File Format	PDF
ISBN	9781424442515
DOI	10.1109/IEMDC.2009.5075425
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fuel cells Low pass filters Pulse width modulation inverters Delay effects Power harmonic filters Resonance RLC circuits Circuit noise Frequency Capacitors
Content Type	Text
Resource Type	Article

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