Research on the Technology of the Neutral-Point Voltage Balance and Dual-Loop Control Scheme for Three-Level PWM Inverter

Author

Lu, Chaoying ; Yang, Shuying ; Wei, Xinfeng ; Zhang, Xing

Author_Institution

Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., Hefei, China

fYear

2012

fDate

27-29 March 2012

Firstpage

1

Lastpage

4

Abstract

A mathematical model of the three-level PWM inverter is set up. The dual close-loop control of DC motor is applied to three-level PWM inverter. As a result, the three-level inverter has favorable dynamic and steady state performance, sinusoidal input current and unity power factor. A simple three-level SVPWM algorithm with reference voltage vector decomposition presents in this paper. A neutral-point balancing control method is employed, by adjusting the times of positive small vectors and negative small vectors. Finally, computer simulations show the superiority of the method.

Keywords

DC motors; PWM invertors; closed loop systems; machine control; power factor; voltage control; DC motor; computer simulations; dual close-loop control; dynamic state performance; mathematical model; negative small vectors; neutral-point voltage balance control scheme; positive small vectors; reference voltage vector decomposition; sinusoidal input current; steady state performance; three-level PWM inverter; three-level SVPWM algorithm; unity power factor; Inverters; Mathematical model; Space vector pulse width modulation; Support vector machine classification; Vectors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific

Conference_Location

Shanghai

ISSN

2157-4839

Print_ISBN

978-1-4577-0545-8

Type

conf

DOI

10.1109/APPEEC.2012.6307127

Filename

6307127