Research on Neutral-point Balancing Control for Three-level NPC Inverter Based on Correlation between Carrier-based PWM and SVPWM

Author

Song, Wenxiang ; Chen, Guocheng ; Ding, Xiaoyu ; Shu, Mantang

Author_Institution

Shanghai Key Lab. of Power Station Autom. Technol., Shanghai Univ.

Volume

3

fYear

2006

fDate

14-16 Aug. 2006

Firstpage

1

Lastpage

6

Abstract

Based on inherent correlation between the carrier-based PWM and SVPWM for three-level inverter, this paper presents a new modulation approach for the control of the neutral-point voltage variation in the three-level neutral-point-clamped voltage source inverter. The new modulation approach realizes the control of inverter neutral-point current by modifying redundant small vectors pairs distribution factor, only requiring the information of dc-link capacitor voltages and three-phase load currents, which is convenient to apply and is compatible of digital computer realization. The effectiveness of proposed control approach is verified by simulation and experiment results

Keywords

PWM invertors; electric current control; voltage control; carrier-based SVPWM; correlation method; current control; modulation approach; neutral-point balancing control; three-level NPC inverter; voltage control; Automatic voltage control; Automation; Capacitors; Computational modeling; Laboratories; Power generation; Pulse width modulation inverters; Space vector pulse width modulation; Switches; Voltage control; SVPWM; carrier-based PWM; neutral-point voltage control; neutral-point-clamped inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International

Conference_Location

Shanghai

Print_ISBN

1-4244-0448-7

Type

conf

DOI

10.1109/IPEMC.2006.4778261

Filename

4778261