Title :
Analysis of instantaneous current and power using space switching functions
Author_Institution :
Technol. Univ. of Nagaoka, Niigata, Japan
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;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18114
