Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Thakur Anchal Singh, R. S. Vivek, Gopakumar Kumarukattan Nair, Umanand Loganathan, Reddy B. Subba, Zieliński Dariusz
Dyscypliny:
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Wersja dokumentu:	Elektroniczna
Język:	angielski
Strony:	1 - 10
Bazy:	IEEE Xplore
Efekt badań statutowych	NIE
Materiał konferencyjny:	NIE
Publikacja OA:	NIE
Abstrakty:	angielski
	In this work, a hybrid 5-level inverter topology with a single DC source is proposed along with a method to increase the linear modulation range of this topology up to full base speed with the elimination of lower-order harmonics for variable speed drive applications. The 5-level inverter topology consists of the cascade arrangement of two basic inverter topologies. The 3-level flying capacitor stage with a nominal capacitor voltage of Vdc/2 is followed by the 3-level H-bridge stage with a nominal capacitor voltage of Vdc/8. Using the proposed method, the peak phase fundamental voltage can be increased from 0.577Vdc to 0.637Vdc in the extended linear modulation region for the same DC input. Unlike conventional speed drives, where lower-order harmonics are produced during operation in the extended modulation region (six-step mode), in the proposed topology, lower-order harmonics are eliminated during operation in the extended linear modulation region. This ensures better performance of the variable speed drives up to the full base speed. Experimental results to demonstrate both the steady-state and transient-state performance of the proposed topology are presented in this paper.

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Extending the Linear Modulation Range of a Five-Level Inverter Up to the Full Base Speed for Variable Speed Drive Applications

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