REACTIVE POWER CONSUMPTION OF A SIX-PHASE INDUCTION GENERATOR
Journal Title: Електромеханічні і енергозберігаючі системи - Year 2018, Vol 4, Issue 44
Abstract
Purpose. The purpose of this work is to estimate reactive consumption of a six-phase induction generator in comparison with three-phase induction generator at identical conditions. Methodology. Theoretical research of the winding parameters has been carried out. To conduct the research mathematical equations were used to obtain results for six-phase and three-phase windings. The active and inductive resistances of the substitution circuit for the three-phase and six-phase configuration of the stator winding were calculated. The modeling of the gradual power delivery by the generator was made by changing the values of the rotor slip corresponding to the rotor frequency variation of the machine. For the three-phase and six-phase stator windings, the calculations of the stator current reactive component, the power factor and reactive consumption values were carried out. The difference between the reactive power consumption for three-phase and six-phase stator windings was calculated and given in percentages. Results. The application of six-phase winding has significant advantages for induction machines. For the six-phase winding the power factor is higher compared to the three-phase winding. The reactive power consumption for generators with six-phase winding is reduced by 5 % when working with rated power. When working with power from 0.5 to 0.8 of nominal, reactive consumption decreases by 10 %. For generators which work with underloading, the application of the six-phase winding allows to improve the energy performance and the efficiency. Originality. For the first time the reactive power consumption for generators with six-phase winding and three-phase winding have been calculated, taking into account the power factor and stator current variation. Practical value. The application of six-phase windings is of great practical importance in solving problems of effective operation of the asynchronous generators. The reactive power consumption of the machine with six-phase winding is less compared to the three-phase one. Increasing the power factor allows to optimize operating conditions of the generator and to improve the general performance of the power plant.
Authors and Affiliations
Oleh Mykhailiuk
Keywords
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- EP ID EP660033
- DOI 10.30929/2072-2052.2018.4.44.30-36
- Views 248
- Downloads 0
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