DOI:https://doi.org/10.1007/s40565-018-0403-7 |
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Constant frequency operation of parallel resonant converter for constant-current constant-voltage battery charger applications |
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Net amount: 852 |
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Author:
Taha Nurettin GÜCIN1, Muhammet BIBEROĞLU1, Bekir FINCAN2
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Author Affiliation:
1. Energy Systems Engineering Department, University of
Yalova, 77200 Yalova, Turkey
2. Electrical Engineering Department, Istanbul Technical
University, 34469 Istanbul, Turkey
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Foundation: |
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Abstract: |
This paper proposes a design and control
approach to parallel resonant converter (PRC) based battery
chargers. The proposed approach is particularly suitable
for the constant-current constant-voltage (CC-CV)
charging method, which is the most commonly utilized
one. Since the PRC is operated at two different frequencies
for each CC and CV charging modes, this approach eliminates
the need for complicated control techniques such as
the frequency-control and phase-shift-control. The proposed
method not only simplifies the design and implementation
processes of the converter unit but also
simplifies the design of output filter configuration and
decreases the number of the required components for the
control of the charger. The proposed method is confirmed
by two experimental setups. The results show that the
designed charger circuit ensured a very stable constant
current in CC charging phase, where the charging current is
fixed to 1.75 A. Although a voltage increase in CV phase is
observed, the charger circuit is able to decrease the
charging current to 0.5 A in CV phase, as depicted in
battery data-sheet. The efficiency of the charger is figured
out to be in the range of 86%-93% in the first setup, while it
is found to be in the range of 78%-88% in the second setup,
where a high frequency transformer is employed. |
Keywords: |
Resonant converter, Parallel resonant
converter, Battery charger, Constant-current constantvoltage
(CC-CV) charging |
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Online Time:2019/01/28 |
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