Analysis of instantaneous current and power using space switching functions

Author

Takahashi, Isao

Author_Institution

Technol. Univ. of Nagaoka, Niigata, Japan

fYear

1988

fDate

11-14 April 1988

Firstpage

42

Abstract

Definitions of instantaneous current and voltage vectors, instantaneous active and reactive powers, and space switching functions are provided and used to analyze the instantaneous power flow of a converter circuit with switching elements. The mechanism of reactive power generation in the power converter is clarified. It is generated by the shorted switches in the voltage source converter and open switches in the current source converter. Two examples are presented. One is an inverter induction motor drive system with a DC filter. The other is an energy transfer system for superconducting coils using thyristor converters.

Keywords

power convertors; reactive power; DC filter; converter circuit; current source converter; energy transfer system; instantaneous active power; instantaneous current vectors; instantaneous reactive power; instantaneous voltage vectors; inverter induction motor drive system; power converter; reactive power generation; space switching functions; superconducting coils; thyristor converters; voltage source converter; Functional analysis; Induction generators; Inverters; Load flow; Power generation; Reactive power; Switches; Switching circuits; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE

Conference_Location

Kyoto, Japan

Type

conf

DOI

10.1109/PESC.1988.18114

Filename

18114