Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Debnath Tutan, Gopakumar Kumarukattan Nair, Umanand Loganathan, Rajashekara Kaushik, Zieliński Dariusz
Dyscypliny:
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Rok wydania:	2023
Wersja dokumentu:	Elektroniczna
Język:	angielski
Numer czasopisma:	2
Wolumen/Tom:	11
Numer artykułu:	22887657
Strony:	2104 - 2113
Impact Factor:	4,6
Web of Science® Times Cited:	3
Scopus® Cytowania:	3
Bazy:	Web of Science \| Scopus
Efekt badań statutowych	NIE
Materiał konferencyjny:	NIE
Publikacja OA:	NIE
Abstrakty:	angielski
	The voltage drift control of series-connected capacitors across a single dc-link is the major challenge for a multineutral point-clamped (NPC) converter. This drifting is caused due to uneven currents drawn from the neutral points (NPs) during the PWM operation. This work presents the working principle of instantaneous voltage control of “ n ” dc-link series-connected capacitors for an induction machine load. The mechanism of instantaneous voltage balancing is realized by ensuring zero instantaneous currents at each dc-link NP. To get zero instant currents at a dc-link NP branch, the phase terminals tapping on the dc-link are manipulated with the help of cascaded hybrid bridges (CHBs). Charge balancing of CHB capacitors is also taken care of by proper utilization of pole voltage redundancies. The detailed results are presented for a small-scaled inverter (nine-level) with three NPs (four dc-link capacitors). The simulation and experimental results reflect the capability and limitations of such inverters. The results are presented at all modulation indexes operated under low-power-factor (LPF) and high-power-factor (HPF) load conditions. It is found that the linear modulation range (LMR) can be increased to full base speed even for an HPF load.

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A Generalized Multilevel Inverter With Extended Linear Modulation Range and Instantaneously Balanced DC-Link Series Capacitors for an Induction Motor Drive

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