Z-source inverter for adjustable speed drives

Author

Peng, Fang Z. ; Yuan, Xiaoming ; Fang, Xupeng ; Qian, Zhaoming

Author_Institution

Dept. of Electr. & Comput. Eng., Michigan State Univ., Hangzhou, China

Volume

1

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

33

Lastpage

35

Abstract

This paper presents a Z-source inverter system and control for adjustable speed drives (ASD). The Z-source inverter employs a unique LC network to couple the inverter main circuit to the diode front end. By controlling the shoot-through duty cycle, the Z-source can produce any desired output AC voltage, even greater than the line voltage. As results, the new Z-source inverter system provides ride-through capability under voltage sags, reduces line harmonics, and extends output voltage range. Simulation results are presented to demonstrate the new features.

Keywords

equivalent circuits; invertors; power conversion harmonics; power semiconductor diodes; variable speed drives; LC network; Z-source inverter; adjustable speed drives; control; diode front end; equivalent circuit; inverter main circuit; line harmonics reduction; output AC voltage; output voltage range; ride-through capability; shoot-through duty cycle control; voltage sags; Bridge circuits; Capacitors; Control systems; Diodes; Inverters; Power quality; Power system stability; Rectifiers; Variable speed drives; Voltage;

fLanguage

English

Journal_Title

Power Electronics Letters, IEEE

Publisher

ieee

ISSN

1540-7985

Type

jour

DOI

10.1109/LPEL.2003.820935

Filename

1249497