A 3-D generalized direct PWM algorithm for multilevel converters

Author

Dai, Ning-Yi ; Wong, Man-chung ; Chen, Yuan-Hua ; Han, Ying-Duo

Author_Institution

Fac. of Sci. & Technol., Univ. of Macau, China

Volume

3

Issue

3

fYear

2005

Firstpage

85

Lastpage

88

Abstract

A three-dimensional (3-D) generalized direct pulse width modulation (PWM) algorithm is proposed for multilevel converters in a three-phase, four-wire system. It is proved to be equivalent to the newly proposed generalized 3-D space vector modulation (SVM). However, the direct PWM greatly simplifies the calculation process and is much easier to implement in digital controllers. The direct PWM can be used in all applications needing a 3-D control vector, such as active filters, uninterruptible power supplies, etc. Simulation and experimental results are given to show the validity of the proposed control strategy.

Keywords

PWM power convertors; digital control; 3-D control vector; 3-D space vector modulation; PWM algorithm; active filter; digital controller; multilevel converter; three-dimensional direct pulse width modulation; three-phase four-wire system; uninterruptible power supply; Costs; Electromagnetic interference; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Space technology; Space vector pulse width modulation; Stress; Support vector machines; Voltage control; 3-D direct PWM; multilevel converters; three-phase four-wire system;

fLanguage

English

Journal_Title

Power Electronics Letters, IEEE

Publisher

ieee

ISSN

1540-7985

Type

jour

DOI

10.1109/LPEL.2005.855112

Filename

1525000