Abstract
Multi-phase induction generators which may be operated in grid or self-excited mode, are found to be successful machines for wind energy conversion. Out of these two, self-excited mode is gaining importance due to its ability to convert the wind energy into electrical energy for large variations in operating speed. For this purpose, in this paper modelling and analysis in an isolated self-excited mode of dual-stator induction generator (DSIG) with a new algorithm have been done. We develop the steady-state model of a DSIG, for stand-alone renewable generation dispenses with the segregating of real and imaginary components of the complex impedance of the induction generator. Steady-state performances and characteristics of different configurations are clearly examined and compared. Simulated results as found using proposed “FZERO” algorithm are verified using experimental results on a test machine. Results obtained show that the system has sufficient capability for practical use in stand-alone power generation.
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Abbreviations
- C \(_1\) :
-
Excitation capacitance per phase with stator 1
- C \(_2\) :
-
Excitation capacitance per phase with stator 2
- E :
-
Air gap voltage per phase at rated frequency F
- I \(_\mathrm{s1}\) :
-
Stator 1 current per phase
- I \(_\mathrm{s2}\) :
-
Stator 2 current per phase
- I \(_r'\) :
-
Rotor current per phase, referred to stator
- I \(_m\) :
-
Magnetizing current per phase
- I \(_s\) :
-
Common stator current
- R \(_\mathrm{s1}\) :
-
Stator 1 resistance per phase
- R \(_\mathrm{s2}\) :
-
Stator 2 resistance per phase
- R \(_r\) :
-
Rotor resistance per phase, referred to stator
- V :
-
Load voltage per phase
- X \(_\mathrm{s1}\) :
-
Stator 1 reactance per phase
- X \(_\mathrm{s2}\) :
-
Stator 2 reactance per phase
- X \(_\mathrm{sm}\) :
-
Stator mutual leakage reactance per phase
- X \(_r'\) :
-
Rotor reactance per phase, referred to stator
- X \(_\mathrm{c1}\) :
-
Capacitive reactance due to C \(_1\) at rated frequency
- X \(_\mathrm{c2}\) :
-
Capacitive reactance due to C \(_2\) at rated frequency
- X \(_m\) :
-
Magnetizing reactance per phase at rated frequency
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Khlifi, M.A., Ben Slimene, M., Ben Fredj, M. et al. Performance evaluation of self-excited DSIG as a stand-alone distributed energy resources. Electr Eng 98, 159–167 (2016). https://doi.org/10.1007/s00202-015-0349-y
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DOI: https://doi.org/10.1007/s00202-015-0349-y