A characteristic analysis of four-leg inverter in two AC motor drives with independent vector control

Author

Furuya, Atsushi ; Oka, Kazuo ; Matsuse, Kouki

Author_Institution

Meiji Univ., Kawasaki

fYear

2007

fDate

8-11 Oct. 2007

Firstpage

619

Lastpage

624

Abstract

This paper presents a characteristic analysis of a four-leg inverter. The four-leg inverter is a single inverter that can drive two alternating current (AC) motors independently. We show that an expanded two-arm modulation (ETAM) known as a modulation method of a five-leg inverter is applicable for the four- leg inverter and the two AC motors can be driven independently by this inverter with adapting the ETAM. We also show that a neutral point potential (NPP) of a capacitor bridge (CB) connecting w phases of two AC motors in common fluctuates. Moreover, we theoretically analyze about harmonic components of output voltage for four-leg inverter in using the ETAM

Keywords

AC motor drives; bridge circuits; invertors; machine vector control; power capacitors; AC motor drives; alternating current motors; capacitor bridge; expanded two-arm modulation; four-leg inverter; harmonic components; independent vector control; neutral point potential; AC motors; Bridge circuits; Capacitors; Harmonic analysis; Independent component analysis; Inverters; Joining processes; Leg; Machine vector control; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2007. ICEMS. International Conference on

Conference_Location

Seoul

Print_ISBN

978-89-86510-07-2

Electronic_ISBN

978-89-86510-07-2

Type

conf

Filename

4412037