DocumentCode :
836627
Title :
A series-connected two-motor six-phase drive with induction and permanent magnet machines
Author :
Levi, Emil ; Jones, Martin ; Vukosavic, Slobodan N.
Author_Institution :
Sch. of Eng., Liverpool John Moores Univ., UK
Volume :
21
Issue :
1
fYear :
2006
fDate :
3/1/2006 12:00:00 AM
Firstpage :
121
Lastpage :
129
Abstract :
A novel concept for multimotor drives, based on utilization of multiphase machines, has been proposed recently. Independent vector control of all the machines of the group can be achieved while using a single multiphase inverter supply, provided that the stator windings are connected in series in an appropriate manner. One specific case of such a drive system is a two-motor drive, comprising a symmetrical six-phase machine connected in series with a three-phase machine. The group is supplied from a six-phase current-controlled voltage source inverter (VSI). The available considerations related to this two-motor drive system, consisting of two induction motors, are currently of purely theoretical nature, with the proof-of-concept provided by simulation only. This paper analyzes series-connected two-motor six-phase drive, comprising a six-phase symmetrical induction machine and a three-phase permanent magnet synchronous machine (PMSM) and provides, for the first time, detailed experimental verification of the possibility of independent control of the two motors. The operating principles of the drive system are at first reviewed and a brief description of the experimental system is then given. The emphasis is placed on an extensive presentation of experimental results, collected from a laboratory setup. It is shown that a truly independent and decoupled vector control of the two machines results, although a single supply source is used. The two-motor drive system of the proposed structure is seen as a potentially viable industrial solution for applications requiring one high-power and one low-power machine.
Keywords :
electric current control; induction motor drives; invertors; machine vector control; permanent magnet motors; stators; synchronous motor drives; independent vector control; induction magnet machines; multimotor drives; multiphase inverter supply; multiphase machines; series-connected two-motor six-phase drive; six-phase current controlled voltage source inverter; stator windings; symmetrical six-phase machine; three-phase permanent magnet synchronous machine; Induction machines; Induction motors; Inverters; Machine vector control; Magnetic analysis; Permanent magnet machines; Permanent magnet motors; Stator windings; Time series analysis; Voltage; Experimental verification; multimotor drives; multiphase machines; six-phase; vector control;
fLanguage :
English
Journal_Title :
Energy Conversion, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8969
Type :
jour
DOI :
10.1109/TEC.2005.853737
Filename :
1597328
Link To Document :
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