Three-level SVPWM method based on two-level PWM cell in DSP

Author

Wenxi, Yao ; Zhengyu, Lu ; Wanmin, Fei ; Zhaoming, Qiao ; Yilei, Gu ; Zheng, Mingfang

Author_Institution

Nat. Lab. of Power Electron., Hangzhou, China

Volume

3

fYear

2004

fDate

2004

Firstpage

1720

Abstract

This paper focuses on the relationship of three-level and two-level pulse width modulation (PWM) methods. A scheme of three-level space-vector PWM (SVPWM) based on one chip DSP is proposed depends on two groups of three-phase traditional PWM cell integrated in DSP. Neutral-point balance is achieved by adjusting the output voltage vectors based on the neutral-point current judging. This method simplified the digital control of three-level inverters, and improved the reliability of system. 660 V three-level converter with full digital control is proposed to verify the scheme.

Keywords

PWM invertors; PWM power convertors; digital control; digital signal processing chips; 660 V; DSP; digital control; neutral-point balance; neutral-point current judging; pulse width modulation; three-level converter; three-level inverters; three-level space-vector PWM; two-level PWM cell; voltage vectors; Digital control; Digital signal processing; Digital signal processing chips; Equations; Laboratories; Power electronics; Pulse width modulation inverters; Space vector pulse width modulation; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE

Print_ISBN

0-7803-8269-2

Type

conf

DOI

10.1109/APEC.2004.1296098

Filename

1296098