Novel Carrier-reassignment PWM Techniques for Sub-Module Power Balancing in CHB Converters

Little Pradhan; Renuka Varma; D. Venkatramanan; Prince Kumar; Ned Mohan; Abhijit Kshirsagar

doi:10.1109/IECON49645.2022.9968353

Novel Carrier-reassignment PWM Techniques for Sub-Module Power Balancing in CHB Converters

Little Pradhan, Renuka Varma, D. Venkatramanan, Prince Kumar, Ned Mohan, Abhijit Kshirsagar

Electrical and Computer Engineering

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

4 Scopus citations

Abstract

The Cascaded H-Bridge (CHB) multilevel inverter is a modular topology that uses multiple series-connected submodules (SMs) fed by individual DC sources. The commonly used level-shifted-carrier PWM scheme causes vast disparity in the share of power processed by various SMs, resulting in an unequal electrical and thermal stress, thereby reducing SM reliability. Ensuring equal power processing among all SMs is critical especially in applications such as battery and solar photovoltaics. This paper proposes two computationally efficient and easy to implement carrier-reassignment PWM techniques that result in perfect power balance under unity power factor (UPF) and zero power factor (ZPF) conditions. Mathematical analysis of real and reactive power is used to develop these modulation schemes, followed by validation using MATLAB/Simulink models. A comparison of real and reactive power balance are also provided for various PWM schemes at various power factors.

Original language	English (US)
Title of host publication	IECON 2022 - 48th Annual Conference of the IEEE Industrial Electronics Society
Publisher	IEEE Computer Society
ISBN (Electronic)	9781665480253
DOIs	https://doi.org/10.1109/IECON49645.2022.9968353
State	Published - 2022
Event	48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022 - Brussels, Belgium Duration: Oct 17 2022 → Oct 20 2022

Publication series

Name	IECON Proceedings (Industrial Electronics Conference)
Volume	2022-October
ISSN (Print)	2162-4704
ISSN (Electronic)	2577-1647

Conference

Conference	48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022
Country/Territory	Belgium
City	Brussels
Period	10/17/22 → 10/20/22

Bibliographical note

Funding Information:
This work was partially supported through Startup Research Grant (SRG/2020/002232) from the Science and Engineering Research Board (Department of Science and Technology, Government of India).

Publisher Copyright:
© 2022 IEEE.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/IECON49645.2022.9968353

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Pradhan, L., Varma, R., Venkatramanan, D., Kumar, P., Mohan, N., & Kshirsagar, A. (2022). Novel Carrier-reassignment PWM Techniques for Sub-Module Power Balancing in CHB Converters. In IECON 2022 - 48th Annual Conference of the IEEE Industrial Electronics Society (IECON Proceedings (Industrial Electronics Conference); Vol. 2022-October). IEEE Computer Society. https://doi.org/10.1109/IECON49645.2022.9968353

Novel Carrier-reassignment PWM Techniques for Sub-Module Power Balancing in CHB Converters. / Pradhan, Little; Varma, Renuka; Venkatramanan, D. et al.
IECON 2022 - 48th Annual Conference of the IEEE Industrial Electronics Society. IEEE Computer Society, 2022. (IECON Proceedings (Industrial Electronics Conference); Vol. 2022-October).

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

Pradhan, L, Varma, R, Venkatramanan, D, Kumar, P, Mohan, N & Kshirsagar, A 2022, Novel Carrier-reassignment PWM Techniques for Sub-Module Power Balancing in CHB Converters. in IECON 2022 - 48th Annual Conference of the IEEE Industrial Electronics Society. IECON Proceedings (Industrial Electronics Conference), vol. 2022-October, IEEE Computer Society, 48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022, Brussels, Belgium, 10/17/22. https://doi.org/10.1109/IECON49645.2022.9968353

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abstract = "The Cascaded H-Bridge (CHB) multilevel inverter is a modular topology that uses multiple series-connected submodules (SMs) fed by individual DC sources. The commonly used level-shifted-carrier PWM scheme causes vast disparity in the share of power processed by various SMs, resulting in an unequal electrical and thermal stress, thereby reducing SM reliability. Ensuring equal power processing among all SMs is critical especially in applications such as battery and solar photovoltaics. This paper proposes two computationally efficient and easy to implement carrier-reassignment PWM techniques that result in perfect power balance under unity power factor (UPF) and zero power factor (ZPF) conditions. Mathematical analysis of real and reactive power is used to develop these modulation schemes, followed by validation using MATLAB/Simulink models. A comparison of real and reactive power balance are also provided for various PWM schemes at various power factors.",

author = "Little Pradhan and Renuka Varma and D. Venkatramanan and Prince Kumar and Ned Mohan and Abhijit Kshirsagar",

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AU - Mohan, Ned

AU - Kshirsagar, Abhijit

N1 - Funding Information: This work was partially supported through Startup Research Grant (SRG/2020/002232) from the Science and Engineering Research Board (Department of Science and Technology, Government of India). Publisher Copyright: © 2022 IEEE.

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N2 - The Cascaded H-Bridge (CHB) multilevel inverter is a modular topology that uses multiple series-connected submodules (SMs) fed by individual DC sources. The commonly used level-shifted-carrier PWM scheme causes vast disparity in the share of power processed by various SMs, resulting in an unequal electrical and thermal stress, thereby reducing SM reliability. Ensuring equal power processing among all SMs is critical especially in applications such as battery and solar photovoltaics. This paper proposes two computationally efficient and easy to implement carrier-reassignment PWM techniques that result in perfect power balance under unity power factor (UPF) and zero power factor (ZPF) conditions. Mathematical analysis of real and reactive power is used to develop these modulation schemes, followed by validation using MATLAB/Simulink models. A comparison of real and reactive power balance are also provided for various PWM schemes at various power factors.

AB - The Cascaded H-Bridge (CHB) multilevel inverter is a modular topology that uses multiple series-connected submodules (SMs) fed by individual DC sources. The commonly used level-shifted-carrier PWM scheme causes vast disparity in the share of power processed by various SMs, resulting in an unequal electrical and thermal stress, thereby reducing SM reliability. Ensuring equal power processing among all SMs is critical especially in applications such as battery and solar photovoltaics. This paper proposes two computationally efficient and easy to implement carrier-reassignment PWM techniques that result in perfect power balance under unity power factor (UPF) and zero power factor (ZPF) conditions. Mathematical analysis of real and reactive power is used to develop these modulation schemes, followed by validation using MATLAB/Simulink models. A comparison of real and reactive power balance are also provided for various PWM schemes at various power factors.

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Novel Carrier-reassignment PWM Techniques for Sub-Module Power Balancing in CHB Converters

Abstract

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