New Load Controller for Single-phase Self-excited Induction Generator

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Abstract:

This article presents the digital design and implementation of a new digital signal processor-based load controller to regulate the voltage and frequency of a single-phase self-excited induction generator, suitable for stand-alone operation with an unregulated turbine and constant excitation. The prototype model of a single-phase self-excited induction generator is developed such that the load on the self-excited induction generator remains constant despite the changes in the consumer load. A sinusoidal pulse-width-modulated AC chopper control technique is implemented to regulate the random consumer load so as to maintain a constant load on the generator. The proposed load controller for this self-excited induction generator system can feed the stand-alone loads with an enhanced quality power supply. The transient behavior of the developed digital signal processor-based load controller with the self-excited induction generator system at different operating conditions, such as application and removal of static (resistive and reactive) and dynamic (single-phase induction motor) loads, is investigated to demonstrate the capabilities of the proposed controller.

Keywords: digital signal processor; load controller; pulse width modulation; self-excited induction generator

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/15325000802705620

Affiliations: Department of Electrical Engineering, Indian Institute of Technology, Roorkee, India

Publication date: June 1, 2009

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