Publication Date : 01/08/2012

Author(s) :

Gonoh, B.A., Sabo, M.L..

Volume/Issue :
Volume 7
Issue 1
(08 - 2012)

Abstract :

This paper presents Simulink implementation of an Insulated Gate Bipolar Transistor (IGBT) Sinusoidal Pulse Width Modulation (SPWM) DC/AC inverter for induction generator as a static VAR (variable) source. Connected to an induction generator, the inverter provides reactive power, which is needed for self excitation and load voltage, frequency regulation. A DC source (Battery) feeding the PWM inverter supplied (reactive) power to (from) the generator when the load demand is greater (lesser) than the power supplies from the prime mover (wind). Based on the design, the inverter was implemented with IGBTs as the switching elements. The simulation results of different modulation indexes compared favorably with experimental waveforms as fed to the auxiliary winding of the generator and shows good agreement, even though the laboratory waveforms were a bit distorted by harmonics and vibration from both inverter and generator respectively. The battery inverter single phase induction generator can be used as a source of regulated voltage and frequency for isolated application such as commercial and industrial uses. The system will find application for battery charging purpose and controllable single phase ac voltage source.

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