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Title: Single-phase operation of a three-phase induction generator with the smith connection
Authors: Chan, TF
Lai, LL
Keywords: Induction generators
Phase balancing
Smith connection
Issue Date: 2002
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on energy conversion, 2002, v. 17, no. 1, p. 47-54 How to cite?
Journal: IEEE transactions on energy conversion 
Abstract: Single-phase operation of a three-phase induction generator with the Smith connection (SMIG) is analyzed using the method of symmetrical components. It is shown that, despite the asymmetrical nature of the winding connection, balanced currents can be made to flow in the three-phase stator winding. The conditions for achieving perfect phase balance are carefully deduced. With the aid of a phasor diagram, expressions for the line power factor and line current under perfect phase balance are also obtained. The effect of the phase-balancing capacitances on the generator performance is investigated. A simple dual-mode control scheme is also proposed with a view of minimizing the phase imbalance over the practical operating speed range. Experiments conducted on a 2.2-kW induction machine confirm the validity of the theoretical analysis and feasibility of the control method.
ISSN: 0885-8969
EISSN: 1558-0059
DOI: 10.1109/60.986436
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