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Content Provider | IEEE Xplore Digital Library |
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Author | Stemmler, H. Deplazes, R. |
Copyright Year | 1997 |
Description | Author affiliation: Power Electron. & Electrometrol. Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland (Stemmler, H.) |
Abstract | This paper deals with the problems of multi-star induction motors fed by voltage source inverters. After an introduction, the structure of this drive system is described using the example of a 3-star motor with three independent 3-phase windings in the stator which are phase shifted mechanically against each other. Based on the transient equations derived, a control structure is proposed. Special attention is given to the harmonics of the inverter output currents. They can reach a high level due to the interactions of the inverters allocated to the individual 3-phase windings, which are coupled to each other magnetically. The current harmonics determine the dimensioning of the turn-off capability of the inverters. The modes of operation with sinusoidal PWM and square wave mode with fundamental switching frequency are illustrated and compared to normal single-star drives. It is shown how the pulse patterns can be optimized in order to get the lowest possible current harmonics at a given inverter switching frequency and a given fundamental frequency. The paper concentrates on the motor side of the drive system. |
Starting Page | 119 |
Ending Page | 126 |
File Size | 935998 |
Page Count | 8 |
File Format | |
ISBN | 0780338235 |
DOI | 10.1109/PCCON.1997.645597 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1997-08-06 |
Publisher Place | Japan |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Induction motors Voltage Pulse width modulation inverters Traction motors Synchronous motors Pulse width modulation Stator windings Switching frequency Motor drives Power electronics |
Content Type | Text |
Resource Type | Article |
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