Abstract
This work presents a theoretical and experimental study of the self-excited three-phase induction generator in steady state, operating with a synchronous generator for use in isolated generation. Through the remoteness of many locations or because of the absence of an energy distribution network, difficulties exist in the supply of electric energy. The proposal contemplated herein can be applied in order to provide a well-adjusted voltage and reduce project costs in the expansion and implementation of isolated systems. That is, when taking into consideration acquisition costs of the asynchronous squirrel cage rotor machine in relation to the synchronous generator. The main contribution of this study is the making of the synchronous generator into a voltage regulator of the isolated system, in such a manner that the synchronous generator supplies the minimum of active power necessary, where a lower power generator is able to play the role of being the sole voltage regulator.
Highlights
The study of of induction generator (IG) operation in parallel with the salient-pole synchronous generator (SPSG) for isolated generation applications presented arises from the focus given to the development of power generation for isolated regions or those far from the power distribution network
THEORETICAL-EXPERIMENTAL ANALYSIS The computer simulation and the experimental testing are performed based on the electrics diagram in Fig. 1, where the salient pole synchronous generator is connected in parallel with the self-excited induction generator coupled to an inductive load
Any excess of reactive power in the design of the capacitor banks will be absorbed by the load if this is inductive, on the other hand it will be absorbed by the synchronous generator
Summary
The study of of induction generator (IG) operation in parallel with the salient-pole synchronous generator (SPSG) for isolated generation applications presented arises from the focus given to the development of power generation for isolated regions or those far from the power distribution network. When the subject arrives at controllable mechanical power, this study comes into its own, through presenting technical and financial advantages over those techniques already cited Guaranteeing in this way a cost and maintenance reduction, as this only uses power electronics for the voltage regulator of the synchronous generator, in order to provide voltage control, in a manner different to the other aforementioned regulators. This makes the isolated generation system much simpler and robust, by providing validity to supply and greater reliability. Besides the fact that in short circuit and blackouts, only the generators suffer with these contingences, as converters for voltage control are not necessary, avoiding loss or partial burnout of this type of electronic equipment
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