Szczegóły publikacji
Opis bibliograficzny
A four-level single-phase diode-clamped inverter with natural DC-link capacitor voltage balance / Robert STALA // W: SPEEDAM 2018 [Dokument elektroniczny] : 2018 international Symposium on Power Electronics, Electrical Drives, Automation and Motion : [Amalfi], 20–22 June 2018. — Wersja do Windows. — Dane tekstowe. — [Piscataway] : IEEE, [2018]. — Numer ISBN na podstawie bazy Web of Science. — e-ISBN: 978-153864941-1. — S. 691–696. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 696, Abstr. — Publikacja dostępna online od: 2018-08-27
Autor
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 116665 |
|---|---|
| Data dodania do BaDAP | 2018-09-25 |
| Tekst źródłowy | URL |
| DOI | 10.1109/SPEEDAM.2018.8445346 |
| Rok publikacji | 2018 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Wydawca | Institute of Electrical and Electronics Engineers (IEEE) |
| Konferencja | 2018 international Symposium on Power Electronics, Electrical Drives, Automation and Motion |
Abstract
This paper presents research concerning natural balancing of the dc-link voltages in a single-phase full-bridge inverter composed of four-level diode-clamped legs (4L-FBCLD). The converter creates seven levels of output voltage utilizing three capacitors in a dc-link. Under the standard PWM technique such a converter may not operate properly due to unequal discharge of dc-link capacitors. In this paper new concepts of modulation are proposed to achieve more symmetrical discharging of the capacitors and to create the conditions for natural dc-link voltage balance. The natural balancing in the four level converter is a novel achievement and significantly differs from the situation with regard to three-level topology. The paper proposes the concept that the modulation patterns are different for particular levels. In the unbalanced state the output voltage triggers a unique component in the output current which when flowing via the dc-link capacitors varies their average voltages. A proof of this mechanism is also demonstrated in this paper. The concepts are verified by both analytical discussion and simulations.
