An Improved Cascaded Dual-Buck AC-AC Converter

Usman Ali Khan; Junhyuk Lee; Jung Wook Park

doi:10.1109/IPEMC-ECCEAsia48364.2020.9368238

An Improved Cascaded Dual-Buck AC-AC Converter

Usman Ali Khan, Junhyuk Lee, Jung Wook Park

Department of Electrical and Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Conventional dual-buck ac-ac converter can generate a high output voltage using standard low voltage rating semiconductor devices. It has no commutation problem; however, it needs more inductors. In this paper, an improved cascaded dual-buck ac-ac converter requiring fewer inductors is presented to improve the power density and decrease the converter cost. The proposed converter is able to catch a higher output voltage with standard low voltage rating devices. The commutation problem does not occur in the proposed converter. Additionally, the proposed converter uses MOSFETs to improve efficiency, and disables their body diodes to eliminate the loss of reverse recovery and associated issues. In order to reduce the volume of inductors and capacitors, the cascaded units are phase-shifted. To validate the feasibility of the proposed converter, experimental results of the proposed 1 kW cascaded dual-buck converter with 310 V input voltage, and 350Vrms output voltage are provided.

Original language	English
Title of host publication	2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1248-1253
Number of pages	6
ISBN (Electronic)	9781728153018
DOIs	https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368238
Publication status	Published - 2020 Nov 29
Event	9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia - Nanjing, China Duration: 2020 Nov 29 → 2020 Dec 2

Publication series

Name	2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia

Conference

Conference	9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
Country/Territory	China
City	Nanjing
Period	20/11/29 → 20/12/2

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT (MIST), Korea government (No. 2020R1A3B2079407).

Publisher Copyright:
© 2020 IEEE.

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Control and Optimization

Access to Document

10.1109/IPEMC-ECCEAsia48364.2020.9368238

Cite this

Ali Khan, U., Lee, J., & Park, J. W. (2020). An Improved Cascaded Dual-Buck AC-AC Converter. In 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia (pp. 1248-1253). [9368238] (2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368238

Ali Khan, Usman ; Lee, Junhyuk ; Park, Jung Wook. / An Improved Cascaded Dual-Buck AC-AC Converter. 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia. Institute of Electrical and Electronics Engineers Inc., 2020. pp. 1248-1253 (2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia).

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abstract = "Conventional dual-buck ac-ac converter can generate a high output voltage using standard low voltage rating semiconductor devices. It has no commutation problem; however, it needs more inductors. In this paper, an improved cascaded dual-buck ac-ac converter requiring fewer inductors is presented to improve the power density and decrease the converter cost. The proposed converter is able to catch a higher output voltage with standard low voltage rating devices. The commutation problem does not occur in the proposed converter. Additionally, the proposed converter uses MOSFETs to improve efficiency, and disables their body diodes to eliminate the loss of reverse recovery and associated issues. In order to reduce the volume of inductors and capacitors, the cascaded units are phase-shifted. To validate the feasibility of the proposed converter, experimental results of the proposed 1 kW cascaded dual-buck converter with 310 V input voltage, and 350Vrms output voltage are provided.",

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Ali Khan, U, Lee, J & Park, JW 2020, An Improved Cascaded Dual-Buck AC-AC Converter. in 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia., 9368238, 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia, Institute of Electrical and Electronics Engineers Inc., pp. 1248-1253, 9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia, Nanjing, China, 20/11/29. https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368238

An Improved Cascaded Dual-Buck AC-AC Converter. / Ali Khan, Usman; Lee, Junhyuk; Park, Jung Wook.

2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia. Institute of Electrical and Electronics Engineers Inc., 2020. p. 1248-1253 9368238 (2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N1 - Funding Information: ACKNOWLEDGMENT This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT (MIST), Korea government (No. 2020R1A3B2079407). Publisher Copyright: © 2020 IEEE.

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N2 - Conventional dual-buck ac-ac converter can generate a high output voltage using standard low voltage rating semiconductor devices. It has no commutation problem; however, it needs more inductors. In this paper, an improved cascaded dual-buck ac-ac converter requiring fewer inductors is presented to improve the power density and decrease the converter cost. The proposed converter is able to catch a higher output voltage with standard low voltage rating devices. The commutation problem does not occur in the proposed converter. Additionally, the proposed converter uses MOSFETs to improve efficiency, and disables their body diodes to eliminate the loss of reverse recovery and associated issues. In order to reduce the volume of inductors and capacitors, the cascaded units are phase-shifted. To validate the feasibility of the proposed converter, experimental results of the proposed 1 kW cascaded dual-buck converter with 310 V input voltage, and 350Vrms output voltage are provided.

AB - Conventional dual-buck ac-ac converter can generate a high output voltage using standard low voltage rating semiconductor devices. It has no commutation problem; however, it needs more inductors. In this paper, an improved cascaded dual-buck ac-ac converter requiring fewer inductors is presented to improve the power density and decrease the converter cost. The proposed converter is able to catch a higher output voltage with standard low voltage rating devices. The commutation problem does not occur in the proposed converter. Additionally, the proposed converter uses MOSFETs to improve efficiency, and disables their body diodes to eliminate the loss of reverse recovery and associated issues. In order to reduce the volume of inductors and capacitors, the cascaded units are phase-shifted. To validate the feasibility of the proposed converter, experimental results of the proposed 1 kW cascaded dual-buck converter with 310 V input voltage, and 350Vrms output voltage are provided.

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Ali Khan U, Lee J, Park JW. An Improved Cascaded Dual-Buck AC-AC Converter. In 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia. Institute of Electrical and Electronics Engineers Inc. 2020. p. 1248-1253. 9368238. (2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia). doi: 10.1109/IPEMC-ECCEAsia48364.2020.9368238

An Improved Cascaded Dual-Buck AC-AC Converter

Abstract

Publication series

Conference

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

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