This article presents the design and implementation of a digital signal processor (DSP)-based induction generator controller (IGC) to regulate the voltage and frequency of a single-phase self-excited induction generator (SEIG), which employs a three-phase squirrel-cage induction machine that is suitable for the stand-alone power mode and employing an unregulated turbine, such as micro-hydro power generation. A three-phase induction machine can be used to generate single-phase supply at constant voltage and frequency if the electrical load is constantly maintained at its terminals. A prototype model of a single-phase SEIG is developed, such that the load on the SEIG remains constant despite a change in the consumer load. The transient behavior of the developed DSP-based SEIG-IGC system at different operating conditions, such as application and removal of static (resistive and reactive) and dynamic (singlephase induction motor) load, is investigated to demonstrate the capabilities of the proposed IGC.
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