Extending the Linear Modulation Range of a Nine-Level Inverter Drive Fed From a Quasi-Square Wave Inverter and a Switched Capacitor Sourced Inverter From the Other End as a Harmonic Filter
Artykuł w czasopiśmie
MNiSW
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| Status: | |
| Autorzy: | Pardhi Vaidika T., Jain Vibhore, Gopakumar Kumarukattan Nair, Umanand Loganathan, Zieliński Dariusz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 4 |
| Wolumen/Tom: | 7 |
| Strony: | 1502 - 1510 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| This article presents a hybrid nine-level inverter topology for an open-end induction motor drive. One end of the motor is supplied by a multilevel inverter operating in quasi-square-wave mode with an active DC-link. In contrast, a switched-capacitor-fed inverter at the other end acts as a harmonic filter. The main objective is to reduce switching in the high-voltage inverter by operating it in a pseudo six-step mode, while the secondary inverter, supplied by a switched-capacitor arrangement, compensates for the resulting harmonics. This allows for maintaining sinusoidal output currents in both the linear and extended modulation regions. Unlike conventional variable speed drives, which generate lower order harmonics when operating in the extended modulation (six-step) region, the proposed topology suppresses these harmonics while maintaining operation within the extended linear modulation range. This approach increases the usable modulation range and achieves a maximum peak phase fundamental voltage of 0.637 times the DC-link voltage, thereby enabling improved drive performance up to the full base speed. The proposed topology employs a flying-capacitor inverter on the main side, whereas the secondary inverter consists of an H-bridge combined with a three-level inverter supplied by a switched capacitor. Under both steady-state and transient operating conditions, the capacitor voltages remain balanced within their specified limits. The operation of the proposed topology is experimentally validated, and the results demonstrate reduced switching losses along with effective harmonic compensation. |
