A novel modulation for the comprehensive neutral-point balancing in the three-level NPC inverter with minimum output switching-frequency ripple

Author

Busquets-Monge, S. ; Somavilla, S. ; Bordonau, J. ; Boroyevich, D.

Author_Institution

Dept. of Electron. Eng., Technical Univ. of Catalonia, Barcelona, Spain

Volume

6

fYear

2004

fDate

20-25 June 2004

Firstpage

4226

Abstract

This paper presents a new modulation approach for the complete control of the neutral-point voltage in the three-level three-phase neutral-point-clamped voltage source inverter. The balancing of the neutral-point is achieved over the full range of converter output voltages and for all load power factors with the minimum output voltage distortion at around the switching-frequency. The simple phase duty-ratio expressions in d-q-0 coordinates that define this modulation solution are presented. The performance of this modulation approach and its benefits over other previously proposed solutions are verified through simulation and experimentation.

Keywords

invertors; power factor; switching convertors; voltage control; comprehensive neutral-point balancing; neutral-point voltage control; output switching-frequency ripple; switching-frequency; three-level NPC inverter; voltage distortion; voltage source inverter; Frequency conversion; Inverters; Power electronics; Pulse width modulation; Pulse width modulation converters; Reactive power; Space vector pulse width modulation; Switching frequency; Topology; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual

ISSN

0275-9306

Print_ISBN

0-7803-8399-0

Type

conf

DOI

10.1109/PESC.2004.1354747

Filename

1354747