Three-Phase Z-Source AC-AC Converter for Motor Drives

Author

Fang, Xu-Peng

Author_Institution

Shandong Univ. of Sci. & Technol., Qingdao

Volume

1

fYear

2006

fDate

14-16 Aug. 2006

Firstpage

1

Lastpage

5

Abstract

This paper presents a Z-source ac-ac converter system and control for general-purpose motor drives. The Z-source ac-ac converter system employs a unique LC network to suppress the over-current and surge voltage due to the shoot-through or the open-circuit of the two switches. By controlling the duty cycle, the Z-source can provide buck-boost function, produce greater or less voltage than the line voltage. As a result, the new Z-source ac-ac converter system provides ride-through capability under voltage sags, reduces line harmonics, and improves power factor and reliability. Analysis, simulation and experimental results will be presented to demonstrate these new features

Keywords

AC-AC power convertors; PWM power convertors; induction motor drives; machine control; overcurrent protection; power supply quality; surge protection; LC network; PWM converter; buck-boost function; duty cycle control; induction motor; line harmonics reduction; motor drive control; open-circuit; over-current suppression; power factor; ride-through capability; surge voltage suppression; three-phase Z-source AC-AC converter; voltage sags; Control systems; Motor drives; Power quality; Power system harmonics; Power system reliability; Power system stability; Surges; Switches; Switching converters; Voltage control; Ac-ac converter; PWM-converter; Z-source;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International

Conference_Location

Shanghai

Print_ISBN

1-4244-0448-7

Type

conf

DOI

10.1109/IPEMC.2006.4777969

Filename

4777969