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Comparison Between Phase Number and Operation Mode of Multiphase Boost Chopper for Reducing Input Current Ripple
Author(s) -
Toru Akihiro,
Haga Hitoshi,
Kondo Seiji
Publication year - 2013
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22398
Subject(s) - ripple , chopper , control theory (sociology) , duty cycle , current (fluid) , phase (matter) , electronic engineering , computer science , physics , engineering , electrical engineering , voltage , control (management) , quantum mechanics , artificial intelligence
Summary This paper describes the characteristics of a multiphase boost chopper on the basis of the difference between its phase number and operation mode. First, the paper presents a theoretical analysis of an input current ripple in a multiphase boost chopper controlled with CCM and DCM . For analyzing CCM , the input current ripple in an n ‐phase boost chopper is expressed by a general formula using a duty ratio. This expression clarifies integrally the relations between the phase number and input current ripple. The current ripple in CCM is much lower than that in DCM for the tested four‐phase boost chopper. Furthermore, this paper presents a comparison between the converter efficiency and step response of a four‐phase boost chopper controlled in CCM or DCM . The efficiency in CCM is higher than that in DCM by 0.5%. The phase number affects the step response characteristics in CCM . However, it does not affect the step response characteristics in DCM . © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 185(1): 57–66, 2013; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.22398