Experimental Verification of Critical-Speed Increase of Single-Phase Induction Machines via Winding Reconfiguration With Solid-State Switches

Author

Schraud, Joachim ; Fuchs, Ewald F. ; Fuchs, Heidi A.

Author_Institution

Abt. Entwicklung fur Antriebe von Schienen-Fahrzeugen, Siemens AG, Erlangen

Volume

23

Issue

2

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

460

Lastpage

465

Abstract

The concept of online electronic switching of windings will be applied to a single-phase induction motor with two separate windings with different pole numbers p₁ = 4 and p₂ = 6 and an auxiliary winding required for starting. During switchover from the low-speed winding to the high-speed winding, and vice versa, lasting less than a few milliseconds, small electrical torque and speed transients occur. Relying on closed-loop speed control, a smooth speed response is measured. This concept is, therefore, applicable to variable-speed drives, where a large speed range is desirable. Test data indicate that a speed-control range from 600 to 4000 r/min is obtainable with a single-phase induction motor.

Keywords

induction motors; machine windings; power electronics; starting; switching; switching circuits; auxiliary winding; closed-loop speed control; online electronic switching; single-phase induction machines; solid-state switches; variable-speed drives; winding reconfiguration; Induction machines; Induction motors; Machine windings; Solid state circuits; Switches; Switching circuits; Thyristors; Velocity control; Velocity measurement; Voltage control; Electronic switching of windings; increase of speed range; induced voltage-frequency ( E/f) control; single-phase induction motor;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/TEC.2008.921476

Filename

4505397