Advanced nonlinear control of three-phase PWM rectifiers

Author

Lee, D.-C.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Yeungnam Univ., Kyongbuk, South Korea

Volume

147

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

361

Lastpage

366

Abstract

A nonlinear control of the three-phase PWM rectifier is proposed in which the input q-axis current and output voltage dynamics are modelled in a single-variable nonlinear system. With the d-axis current dynamics excluded. The nonlinear model is linearised by a feedback linearisation technique, not by small-signal analysis, which makes it easier to design the controllers. Furthermore, with the inner capacitor-current control loop, the direct voltage transient response can be faster. The size reduction of the DC electrolytic capacitor due to the fast voltage control of the proposed scheme is studied. The validity of the scheme has been verified through experiment using a TMS320C31 DSP chip

Keywords

PWM power convertors; control system synthesis; digital signal processing chips; electric current control; electrolytic capacitors; feedback; linearisation techniques; nonlinear control systems; rectifying circuits; transient response; voltage control; DC electrolytic capacitor; TMS320C31 DSP chip; controllers design; direct voltage transient response; fast voltage control; feedback linearisation technique; inner capacitor-current control loop; input q-axis current; nonlinear control; output voltage dynamics; single-variable nonlinear system; size reduction; small-signal analysis; three-phase PWM rectifiers;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:20000621

Filename

872748