Control of induction motor drives equipped with small DC-Link capacitance

Author

Hinkkanen, Marko ; Harnefors, Lennart ; Luomi, J.

Author_Institution

HELSINKI Univ. OF Technol., Helsinki

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

10

Abstract

The paper deals with control of induction motor drives equipped with a diode rectifier and a small DC-link capacitance. Neither an AC choke nor a DC choke is used. It is necessary to use DC-link stabilization control if the mains inductance is not very low. Conventional DC-link stabilization controllers rely on the current controller. If no input choke is used, however, the natural frequency of the DC link is higher than the current-control bandwidth, and the conventional stabilization methods cannot be used. This paper proposes a control algorithm based on direct manipulation of the stator voltage reference. Furthermore, a recently proposed field-weakening controller is modified to better suit the oscillating DC-link voltage. Design recommendations for the proposed scheme are presented. Simulation results of a 110-kW drive show that the proposed scheme stabilizes the DC link and the dynamic performance is comparable with that of the conventional drive.

Keywords

capacitance; diodes; electric current control; inductors; motor drives; stability; stators; DC-link capacitance; DC-link stabilization control; current-control bandwidth; diode rectifier; induction motor drives; stator voltage reference; Bandwidth; Capacitance; Diodes; Frequency; Inductance; Induction motor drives; Inductors; Rectifiers; Stators; Voltage control; Control of drive; Converter control; Induction motor;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417763

Filename

4417763