Exact modeling of the voltage source converter

Author

Lehn, P.W.

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

Volume

17

Issue

1

fYear

2002

fDate

1/1/2002 12:00:00 AM

Firstpage

217

Lastpage

222

Abstract

A discrete time, linear time varying model of the three-phase voltage source converter (VSC) is developed. The model is employed to determine the steady-state operating characteristics of a VSC taking all AC-DC side harmonic interactions into account. The procedure is based on an exact closed form solution of the system equations and does not rely on iterative techniques. The steady-state operating curves from the proposed model are compared with those derived from a conventional continuous time dq-frame model. The accuracy of the conventional continuous time model is shown to be highly dependent on the converter´s duty cycle

Keywords

discrete time systems; flexible AC transmission systems; iterative methods; power convertors; power system harmonics; static VAr compensators; AC-DC side harmonic interactions; FACTS; STATCOM; continuous time dq-frame model; discrete time linear time varying model; exact closed form solution; iterative techniques; power; steady state analysis; steady-state operating characteristics; steady-state operating curves; three-phase voltage source converter; Circuits; Continuous time systems; Equations; Frequency conversion; Load flow; Power conversion; Power system modeling; Steady-state; Switching converters; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.974210

Filename

974210