TY - GEN
T1 - Neutral-point voltage dynamic model of three-level NPC inverter for reactive load
AU - Maheshwari, Ram Krishan
AU - Munk-Nielsen, Stig
AU - Busquets-Monge, Sergio
PY - 2012
Y1 - 2012
N2 - A three-level neutral-point-clamped inverter needs a controller for the neutral-point voltage. Typically, the controller design is based on a dynamic model. The dynamic model of the neutral-point voltage depends on the pulse width modulation technique used for the inverter. A pulse width modulation strategy which allows modeling the neutral-point voltage as a first-order continuous function is proposed in this paper. The new model shows that the neutral-point current is proportional to the reactive power drawn from the inverter. Since the model is a first-order model, a simple proportional controller is used in this paper to control the neutral-point voltage. Experimental results verifying the proposed modulation strategy and the controller are also presented in this paper.
AB - A three-level neutral-point-clamped inverter needs a controller for the neutral-point voltage. Typically, the controller design is based on a dynamic model. The dynamic model of the neutral-point voltage depends on the pulse width modulation technique used for the inverter. A pulse width modulation strategy which allows modeling the neutral-point voltage as a first-order continuous function is proposed in this paper. The new model shows that the neutral-point current is proportional to the reactive power drawn from the inverter. Since the model is a first-order model, a simple proportional controller is used in this paper to control the neutral-point voltage. Experimental results verifying the proposed modulation strategy and the controller are also presented in this paper.
UR - http://www.scopus.com/inward/record.url?scp=84872977989&partnerID=8YFLogxK
U2 - 10.1109/IECON.2012.6388762
DO - 10.1109/IECON.2012.6388762
M3 - Article in proceeding
SN - 978-1-4673-2419-9
T3 - Proceedings of the Annual Conference of the IEEE Industrial Electronics Society
SP - 585
EP - 589
BT - 38th Annual Conference on IEEE Industrial Electronics Society, IECON
PB - IEEE Press
CY - Montreal, QC
T2 - the 38th Annual Conference of the IEEE Industrial Electronics Society, IECON 2012
Y2 - 25 October 2012 through 28 October 2012
ER -