Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability

This paper proposes two improved cascaded H-bridge (ICHB) multilevel inverters that feature voltage-boosting capability. The conventional H-bridge with a front-end dc–dc boost converter was restructured for single-stage operation. The developed three-level topology not only saves one power switch bu...

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Autores principales:	Sze Sing Lee, Yongheng Yang, Yam P. Siwakoti, Reza Barzegarkhoo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cascaded H-bridge multilevel inverter voltage-boosting Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/633c29ce5fd147efb56435f0d1d1fe53
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spelling	oai:doaj.org-article:633c29ce5fd147efb56435f0d1d1fe532021-11-25T17:24:46ZImproved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability10.3390/electronics102228012079-9292https://doaj.org/article/633c29ce5fd147efb56435f0d1d1fe532021-11-01T00:00:00Zhttps://www.mdpi.com/2079-9292/10/22/2801https://doaj.org/toc/2079-9292This paper proposes two improved cascaded H-bridge (ICHB) multilevel inverters that feature voltage-boosting capability. The conventional H-bridge with a front-end dc–dc boost converter was restructured for single-stage operation. The developed three-level topology not only saves one power switch but also exhibits lower voltage stress across its capacitor. Extension to five-level generation was also introduced by merely adding two power switches and one capacitor. The final five-level topology outperforms the classical cascaded H-bridge (CHB) multilevel inverter with a significant reduction in the power switch count, with a 42% and 50% reduction in both the isolated dc source and inductor counts. The power efficiency was also improved without compromising the modularity feature of the classical CHB multilevel inverter. The operation and theoretical analysis of the proposed topologies were validated via simulations and experimental tests.Sze Sing LeeYongheng YangYam P. SiwakotiReza BarzegarkhooMDPI AGarticlecascaded H-bridgemultilevel invertervoltage-boostingElectronicsTK7800-8360ENElectronics, Vol 10, Iss 2801, p 2801 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cascaded H-bridge multilevel inverter voltage-boosting Electronics TK7800-8360
spellingShingle	cascaded H-bridge multilevel inverter voltage-boosting Electronics TK7800-8360 Sze Sing Lee Yongheng Yang Yam P. Siwakoti Reza Barzegarkhoo Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability
description	This paper proposes two improved cascaded H-bridge (ICHB) multilevel inverters that feature voltage-boosting capability. The conventional H-bridge with a front-end dc–dc boost converter was restructured for single-stage operation. The developed three-level topology not only saves one power switch but also exhibits lower voltage stress across its capacitor. Extension to five-level generation was also introduced by merely adding two power switches and one capacitor. The final five-level topology outperforms the classical cascaded H-bridge (CHB) multilevel inverter with a significant reduction in the power switch count, with a 42% and 50% reduction in both the isolated dc source and inductor counts. The power efficiency was also improved without compromising the modularity feature of the classical CHB multilevel inverter. The operation and theoretical analysis of the proposed topologies were validated via simulations and experimental tests.
format	article
author	Sze Sing Lee Yongheng Yang Yam P. Siwakoti Reza Barzegarkhoo
author_facet	Sze Sing Lee Yongheng Yang Yam P. Siwakoti Reza Barzegarkhoo
author_sort	Sze Sing Lee
title	Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability
title_short	Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability
title_full	Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability
title_fullStr	Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability
title_full_unstemmed	Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability
title_sort	improved cascaded h-bridge multilevel inverters with voltage-boosting capability
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/633c29ce5fd147efb56435f0d1d1fe53
work_keys_str_mv	AT szesinglee improvedcascadedhbridgemultilevelinverterswithvoltageboostingcapability AT yonghengyang improvedcascadedhbridgemultilevelinverterswithvoltageboostingcapability AT yampsiwakoti improvedcascadedhbridgemultilevelinverterswithvoltageboostingcapability AT rezabarzegarkhoo improvedcascadedhbridgemultilevelinverterswithvoltageboostingcapability
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Improved Cascaded H-Bridge Multilevel Inverters with Voltage-Boosting Capability

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