Control and Modeling of Push-Pull Forward Three-Level Converter for Microgrid

Zhilei Yao; Jing Xu; Josep M. Guerrero

doi:10.1109/OPTIM.2015.7427004

Control and Modeling of Push-Pull Forward Three-Level Converter for Microgrid

AAU Energy

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Abstract

Renewable energy sources are widely used in microgrid. Output voltage of them is often low and varies widely. Because diodes in three-level legs in traditional three-level (TL) converter are substituted by MOSFETs, the push-pull forward (PPF) TL converter is very suitable for wide and low inputvoltage applications. It can operate at two-level and three-level modes. Modeling of the proposed converter is established. Control of the proposed converter is designed, which contains output voltage loop and current limit loop. In addition, control block diagrams of both modes can be simplified to one control diagram. By adding input voltage feedforward, influences of input voltage on output voltage and inductor current can be eliminated. The divider in the input voltage feedforward is simplified by two piecewise linear functions, which can be easily implemented by operational amplifiers. Therefore, cost can be reduced. Simulation results of a 1-kW PPF TL converter verify the theoretical analysis.

Original language	English
Title of host publication	Proceedings of the 2015 Aegean Conference Electrical Machines and Power Electronics ACEMP
Editors	H. Bulent Ertan
Number of pages	7
Publisher	IEEE Press
Publication date	Sept 2015
Pages	455 - 461
ISBN (Print)	978-1-4763-7239-8
DOIs	https://doi.org/10.1109/OPTIM.2015.7427004
Publication status	Published - Sept 2015
Event	Aegean Conference Electrical Machines and Power Electronics - Ankara, Turkey Duration: 2 Sept 2015 → 4 Sept 2015

Conference

Conference	Aegean Conference Electrical Machines and Power Electronics
Country/Territory	Turkey
City	Ankara
Period	02/09/2015 → 04/09/2015

Keywords

Three-level converter
DC-DC converter
Three-level mode
Two-level mode
Input voltage feedforward

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10.1109/OPTIM.2015.7427004

Control and Modeling of Push-Pull Forward Three-Level Converter for MicrogridSubmitted manuscript, 345 KB

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@inproceedings{5f58125dadaa4254942ef432ccd8cac8,

title = "Control and Modeling of Push-Pull Forward Three-Level Converter for Microgrid",

abstract = "Renewable energy sources are widely used in microgrid. Output voltage of them is often low and varies widely. Because diodes in three-level legs in traditional three-level (TL) converter are substituted by MOSFETs, the push-pull forward (PPF) TL converter is very suitable for wide and low inputvoltage applications. It can operate at two-level and three-level modes. Modeling of the proposed converter is established. Control of the proposed converter is designed, which contains output voltage loop and current limit loop. In addition, control block diagrams of both modes can be simplified to one control diagram. By adding input voltage feedforward, influences of input voltage on output voltage and inductor current can be eliminated. The divider in the input voltage feedforward is simplified by two piecewise linear functions, which can be easily implemented by operational amplifiers. Therefore, cost can be reduced. Simulation results of a 1-kW PPF TL converter verify the theoretical analysis.",

keywords = "Three-level converter, DC-DC converter, Three-level mode, Two-level mode, Input voltage feedforward",

author = "Zhilei Yao and Jing Xu and Guerrero, {Josep M.}",

year = "2015",

month = sep,

doi = "10.1109/OPTIM.2015.7427004",

language = "English",

isbn = "978-1-4763-7239-8",

pages = "455 -- 461",

editor = "Ertan, {H. Bulent}",

booktitle = "Proceedings of the 2015 Aegean Conference Electrical Machines and Power Electronics ACEMP",

publisher = "IEEE Press",

note = " Aegean Conference Electrical Machines and Power Electronics, ACEMP ; Conference date: 02-09-2015 Through 04-09-2015",

}

Yao, Z, Xu, J & Guerrero, JM 2015, Control and Modeling of Push-Pull Forward Three-Level Converter for Microgrid. in HB Ertan (ed.), Proceedings of the 2015 Aegean Conference Electrical Machines and Power Electronics ACEMP. IEEE Press, pp. 455 - 461, Aegean Conference Electrical Machines and Power Electronics, Ankara, Turkey, 02/09/2015. https://doi.org/10.1109/OPTIM.2015.7427004

Control and Modeling of Push-Pull Forward Three-Level Converter for Microgrid. / Yao, Zhilei; Xu, Jing; Guerrero, Josep M.
Proceedings of the 2015 Aegean Conference Electrical Machines and Power Electronics ACEMP. ed. / H. Bulent Ertan. IEEE Press, 2015. p. 455 - 461.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Control and Modeling of Push-Pull Forward Three-Level Converter for Microgrid

AU - Yao, Zhilei

AU - Xu, Jing

AU - Guerrero, Josep M.

PY - 2015/9

Y1 - 2015/9

N2 - Renewable energy sources are widely used in microgrid. Output voltage of them is often low and varies widely. Because diodes in three-level legs in traditional three-level (TL) converter are substituted by MOSFETs, the push-pull forward (PPF) TL converter is very suitable for wide and low inputvoltage applications. It can operate at two-level and three-level modes. Modeling of the proposed converter is established. Control of the proposed converter is designed, which contains output voltage loop and current limit loop. In addition, control block diagrams of both modes can be simplified to one control diagram. By adding input voltage feedforward, influences of input voltage on output voltage and inductor current can be eliminated. The divider in the input voltage feedforward is simplified by two piecewise linear functions, which can be easily implemented by operational amplifiers. Therefore, cost can be reduced. Simulation results of a 1-kW PPF TL converter verify the theoretical analysis.

AB - Renewable energy sources are widely used in microgrid. Output voltage of them is often low and varies widely. Because diodes in three-level legs in traditional three-level (TL) converter are substituted by MOSFETs, the push-pull forward (PPF) TL converter is very suitable for wide and low inputvoltage applications. It can operate at two-level and three-level modes. Modeling of the proposed converter is established. Control of the proposed converter is designed, which contains output voltage loop and current limit loop. In addition, control block diagrams of both modes can be simplified to one control diagram. By adding input voltage feedforward, influences of input voltage on output voltage and inductor current can be eliminated. The divider in the input voltage feedforward is simplified by two piecewise linear functions, which can be easily implemented by operational amplifiers. Therefore, cost can be reduced. Simulation results of a 1-kW PPF TL converter verify the theoretical analysis.

KW - Three-level converter

KW - DC-DC converter

KW - Three-level mode

KW - Two-level mode

KW - Input voltage feedforward

U2 - 10.1109/OPTIM.2015.7427004

DO - 10.1109/OPTIM.2015.7427004

M3 - Article in proceeding

SN - 978-1-4763-7239-8

SP - 455

EP - 461

BT - Proceedings of the 2015 Aegean Conference Electrical Machines and Power Electronics ACEMP

A2 - Ertan, H. Bulent

PB - IEEE Press

T2 - Aegean Conference Electrical Machines and Power Electronics

Y2 - 2 September 2015 through 4 September 2015

ER -

Control and Modeling of Push-Pull Forward Three-Level Converter for Microgrid

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