TY - GEN
T1 - Non-isolated high gain boost converter operating in critical conduction mode
AU - Gupta, Ankul
AU - Ayyanar, Raja
AU - Chakraborty, Sombuddha
N1 - Publisher Copyright:
© 2019 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/9
Y1 - 2019/9
N2 - This paper analyzes the operation of a high gain non-isolated boost converter that is a combination of interleaved boost and switched capacitor configuration in critical conduction mode. The converter is able to provide high gain while reducing the current and voltage stresses on semiconductor devices. The converter operation can be divided into different zones based on the duty ratio of operation. In Zone I, which corresponds to the highest gain, the converter possesses inherent current sharing properties among different phases. The inductance value and size are reduced significantly due to interleaving. To further reduce the size, the converter is operated in critical conduction mode. This also results in increased efficiency as turn-on losses of the MOSFETs are zero. A 2kW silicon MOSFET based 4-phase prototype with 42V-52V input and 850V output and operating at varying frequency to maintain critical conduction mode operation at various power levels has been developed to validate the proposed scheme. The total inductor volume is reduced by 48% and the efficiency improves by 0.9% at rated load in CRM operation with the peak efficiency of 97.2% achieved at 1200W.
AB - This paper analyzes the operation of a high gain non-isolated boost converter that is a combination of interleaved boost and switched capacitor configuration in critical conduction mode. The converter is able to provide high gain while reducing the current and voltage stresses on semiconductor devices. The converter operation can be divided into different zones based on the duty ratio of operation. In Zone I, which corresponds to the highest gain, the converter possesses inherent current sharing properties among different phases. The inductance value and size are reduced significantly due to interleaving. To further reduce the size, the converter is operated in critical conduction mode. This also results in increased efficiency as turn-on losses of the MOSFETs are zero. A 2kW silicon MOSFET based 4-phase prototype with 42V-52V input and 850V output and operating at varying frequency to maintain critical conduction mode operation at various power levels has been developed to validate the proposed scheme. The total inductor volume is reduced by 48% and the efficiency improves by 0.9% at rated load in CRM operation with the peak efficiency of 97.2% achieved at 1200W.
KW - Critical conduction mode
KW - High gain
KW - Interleaved boost
KW - Non-isolated converter
UR - http://www.scopus.com/inward/record.url?scp=85076771752&partnerID=8YFLogxK
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U2 - 10.1109/ECCE.2019.8913188
DO - 10.1109/ECCE.2019.8913188
M3 - Conference contribution
AN - SCOPUS:85076771752
T3 - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
SP - 4754
EP - 4759
BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Y2 - 29 September 2019 through 3 October 2019
ER -