A state-space approach to the modelling and control of the neutral leg of a four legs, three-phase inverter

Passalacqua, Massimiliano (University of Genoa, Genova, Italy) ; Grosjean, Gislain (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Kissling, Simon (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Bozorg, Mokhtar (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Marchesoni, Mario (University of Genoa, Genova, Italy) ; Carpita, Mauro (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland)

In this paper, a novel approach to determine the model of an ICNL (Independently Controlled Neutral Leg) is proposed. Based on this model, a cascaded control method is developed to provide a steady neutral point connection for a three-phase four-wire inverter and to balance the two DC capacitors voltages of a split DC-bus. Validation of the model is realised by simulations and the control has been tested by experiments. Results have shown good performance even with a high level of neutral current, which demonstrate the ability of the system to work within an unbalanced load or grid.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
IESE - Institut d'Energie et Systèmes Electriques
Date:
2021-04
Pagination:
9 p.
Published in:
IEEE Transactions on Industrial Electronics
Numeration (vol. no.):
2021, early access
DOI:
ISSN:
0278-0046
Appears in Collection:



 Record created 2021-05-07, last modified 2021-05-10

Fulltext:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)