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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Padma Suresh
Noorul Islam Center for Higher Education
Control & Systems Engineering Electrical & Electronics Engineering

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Investigation of FPGA Based PWM Control Technique for AC Motors Valantina Stephen; Padma Suresh
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 3, No 2: June 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

This paper proposes a Random Frequency PWM synchronized for a three phase inverter implemented with use of FPGA and applied to a 1-hp induction motor drive system for the reduction of harmonics and improvement of fundamental peak voltage. For providing alternating output voltage with a specific magnitude and frequency to industrial applications, three-phase inverter is preferred.  The gating signals to the inverter are produced by means of Random Frequency PWM to significantly reduce harmonics in comparison to currently used PWMs.  FPGA is used to produce gating signals to the switches in a three-phase bridge inverter since a faster speed of operation is needed. The simulation is carried on VHSIC Hardware Description Language (VHDL) using ModelSim. Then, this VHDL model is imported into Matlab environment and co-simulated using HDL Cosimulation toolbox. The simulation and experimental results are presented with a view to determine whether Random Frequency PWM performs better in terms of fundamental voltage and Total Harmonic Distortion.DOI: http://dx.doi.org/10.11591/ijpeds.v3i2.2895
Co-Authors Valantina Stephen