TY - GEN

T1 - Design and Implementation of Non-Isolated Switched-Capacitor SEPIC Converters Using Duality Principle

AU - Su, Xiu Wei

AU - Liao, Hsuan

AU - Peng, Kai Chieh

AU - Tsai, Shang Lin

AU - Chen, Jiann Fuh

N1 - Funding Information:
VI. ACKNOWLEDGMENT The a uthors a ppreciate f or financial s upport f rom t he Ministry of Science and Technology of the R.O.C. under grant number M OST 111 -2221-E-006-078, M OST 111 -2634-F-006-008 and MOST 111-3116-F-006-006.
Publisher Copyright:
© 2022 IEEE.

PY - 2022

Y1 - 2022

N2 - If the renewable source is connected to utility, a current source (CS) is required. The conventional converter design is based on a voltage source (VS). A voltage source has a dual relationship with a source, so this paper takes the dual principle as the basis and uses the dual approach to propose converters based on the current source. The duality theory can be used to convert the switched inductor (SI) structure into a switched capacitor (SC) structure, that is convert a step-up voltage topology into a step-up current topology.In this paper, taking the Single Ended Primary Inductive Converter (SEPIC) converter as an example, the conventional voltage source SEPIC converter is converted into a current source SEPIC converter, and then the capacitor is replaced by a step-down switched capacitor structure to form a current source switched capacitor (CSSC) converter. The input current of the proposed topology is Iin=1 A~5 A, and the switching frequency is 100 kHz. Maximum output current Io is 15 A, and the output power is 1125 W. The efficiency can be at least 90.62 %.

AB - If the renewable source is connected to utility, a current source (CS) is required. The conventional converter design is based on a voltage source (VS). A voltage source has a dual relationship with a source, so this paper takes the dual principle as the basis and uses the dual approach to propose converters based on the current source. The duality theory can be used to convert the switched inductor (SI) structure into a switched capacitor (SC) structure, that is convert a step-up voltage topology into a step-up current topology.In this paper, taking the Single Ended Primary Inductive Converter (SEPIC) converter as an example, the conventional voltage source SEPIC converter is converted into a current source SEPIC converter, and then the capacitor is replaced by a step-down switched capacitor structure to form a current source switched capacitor (CSSC) converter. The input current of the proposed topology is Iin=1 A~5 A, and the switching frequency is 100 kHz. Maximum output current Io is 15 A, and the output power is 1125 W. The efficiency can be at least 90.62 %.

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U2 - 10.1109/eGRID57376.2022.9990028

DO - 10.1109/eGRID57376.2022.9990028

M3 - Conference contribution

AN - SCOPUS:85146290658

T3 - 2022 7th IEEE Workshop on the Electronic Grid, eGRID 2022

BT - 2022 7th IEEE Workshop on the Electronic Grid, eGRID 2022

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 7th IEEE Workshop on the Electronic Grid, eGRID 2022

Y2 - 29 November 2022 through 2 December 2022

ER -