Abstract
AbstractA random search (RS) method of optimization has been implemented in SPWM AC voltage regulator. This method gives trial solutions for the optimization model using random number generators for the decision variables. The symmetrical pulse width modulation (SPWM) strategy is used to obtain required voltage (50 Hz) with minimum harmonic. In SPWM, RS method is used for obtaining multiple switching angles maintaining symmetry of pulse width in both positive and negative half cycle. Angles for on/off instant are obtained from RS, and the waveforms of output voltages and frequency spectra of AC voltage regulator are obtained using PSIM software. The statistics for mean and standard deviation for objective function of one specific case is also discussed.KeywordsSPWMAC voltage regulatorHarmonics eliminationRS
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