A simple algorithm to control two-phase induction motors using a two-leg VSC

Author

Sangsefidi, Younes ; Ziaeinejad, Saleh ; Mehrizi-Sani, Ali ; Shoulaie, Abbas

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA

fYear

2014

fDate

7-9 Sept. 2014

Firstpage

1

Lastpage

6

Abstract

This paper proposes a novel control method for two-phase induction motors using a two-leg voltage-sourced converter (VSC) in high speed applications and field-weakening regions. The proposed Approximate Stator Flux Control (ASFC) method is based on the dynamic model of two-phase induction motors and provides good dynamic behavior of the drive system. The switching strategy of ASFC method is proposed and the speed of the rotating field and the average switching frequency of the VSC are derived. ASFC method controls the speed of the rotating field by adjusting the stator flux modulus. No need to use current transducers and mechanical sensors makes implementation cost of ASFC comparable with that of the conventional scalar control system. Through simulations, the performance of the proposed two-phase ASFC method is evaluated and compared with the scalar control method. In addition, the correctness of the presented theories of ASFC method is validated by dynamic simulations.

Keywords

electric sensing devices; induction motor drives; machine control; magnetic flux; stators; switching convertors; approximate stator flux control; current transducers; drive system; dynamic model; field-weakening regions; high speed applications; mechanical sensors; rotating field; stator flux modulus; switching strategy; two-leg VSC; two-leg voltage-sourced converter; two-phase ASFC method; two-phase induction motor control; Induction motors; Stator windings; Switches; Switching frequency; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

North American Power Symposium (NAPS), 2014

Conference_Location

Pullman, WA

Type

conf

DOI

10.1109/NAPS.2014.6965444

Filename

6965444