• The Transactions of the Korean Institute of Power Electronics
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• v.4 no.1
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• pp.73-81
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• 1999

A new slip power recovery system applying a switch mode converter to the rotor circuit of the wound rotor induction machine is proposed and investigated in this paper. With the analysis of the steady-state performances of the proposed system, it can be shown that the speed can be controlled by the duty ratio of the converter switch and the several characteristics of a conventional system can be also improved. In particular, the low power factor and the harmonic components in the line current, which are the main disadvantages of the conventional system, is significantly improved, and linear speed regulation can be obtained. Theoretical and experimental results are presented and illustrated to demonstrate the satisfactory working of the proposed system.

• The Transactions of the Korean Institute of Power Electronics
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• v.3 no.1
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• pp.70-76
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• 1998

A switch-mode AC/DC converter with high input power factor and sinusoidal input current waveforms is analyzed and modelled for computer simulation. The developed mathematical model for this converter can be used to examine the transient and steady-state performance for selecting the proper ratings of filter, boost inductor and semiconductor devices or the effects of this converter under normal and fault operating conditions on the associated power systems. The proposed model and computer programs are confirmed by comparing with the experimental results.