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Journal of Applied Sciences

Year: 2012 | Volume: 12 | Issue: 24 | Page No.: 2616-2620
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Authors

Mahdi Salman Alshamasin

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Research Article

Control of Zero Sequence Braking for a Three-phase Induction Motor Operating from Single-phase Supply with a Controlled Capacitor

Mahdi Salman Alshamasin
Studying of braking process in the Alternating Current (AC) motors has a great importance due to the need for reducing the braking and stopping time. In many applications, it may be necessary to use a three-phase induction motor on a single-phase supply system. The aims of this study are to investigate and discuss the behavior of a three-phase induction motor operating from single-phase supply when steady-state zero-sequence braking is used. Therefore, mathematical model was developed and the symmetrical components' method was used. To verify the obtained results, an experiment was performed and oscillograms of transient speed were recorded. Results show that the synchronous speed under braking has fallen to one-third of the motoring synchronous speed. And it was also observed that braking time can be controlled by changing the capacitance and rotor resistance values.
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