Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 33, Issue 3, Pages 1952-1966Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2745686
Keywords
Comprehensive design solution; interleaved bidirectional buck/boost converter (IBC); low current ripples & high efficiency; Maxwell 3-D piecewise linear transient simulation; more symmetric four-phase inverse coupled inductor (ICI) structure; more symmetric inductances parameters and coupling constants; more symmetric phase current waveforms; two magnetic circuit analytical models
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Funding
- National Natural Science Foundation of China [U1510128, 51177067]
- Liaoning Province Education Department Key Lab of China [LZ2015045]
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In order to substantially improve multiphase interleaved bidirectional buck/boost converter's (IBC) current ripples and efficiency, this paper proposes a more symmetric four-phase inverse coupled inductor (ICI) structure and its comprehensive design solution. First, this paper presents a more symmetric four-phase ICI structure which has the advantages of larger inductance values and more symmetric inductance parameters comparing to existing four-phase ICI of similar volume. Second, this paper presents the four-phase ICI's two magnetic circuit analytical models, the four-phase ICI's inductance calculation results from the two models are verified with Maxwell 3-D simulation and experiments. Third, this paper presents the four-phase ICI's comprehensive design solution with the two models and Maxwell 3-D piecewise linear transient simulation. Finally, the advantages of the four-phase ICI are verified with experiments. When the four-phase ICI is used in multiphase IBC, the IBC will have smaller current ripples, more symmetric phase current waveforms, lower output voltage ripple, and higher efficiency both in buck and boost modes.
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