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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Sheroz Khan
Department of Electrical and Computer Engineering, International Islamic University Malaysia.
Control & Systems Engineering Electrical & Electronics Engineering

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Predictive Control of AC/AC Matrix Converter Siti Hajar Yusoff; Nur Shahida Midi; Sheroz Khan; Majdee Tohtayong
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 4: December 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (781.066 KB) | DOI: 10.11591/ijpeds.v8.i4.pp1932-1942

Abstract

This work investigates the usage of Model Predictive Control (MPC) for a three phase conventional matrix converter with low pass filter at the input and output side. The conventional matrix converter has 3 input and 3 output which gives 27 switching state. From this design, a MPC is incorporate to control the output voltage and the input currents for all the phases. The design of the proposed controller is based on the input current controller and output voltage controller with load observer.  The proposed MPC using cost function will select the minimized switching state to be applied to next switching. This gives a sinusoidal output voltages and input currents. A simulation and experimental studies are presented to validate the proposed control scheme.
The Combination of Newton-Raphson Method and Curve-Fitting Method for PWM-based Inverter Majdee Tohtayong; Sheroz Khan; Mashkuri Yaacob; Siti Hajar Yusoff; Nur Shahida Midi; Musse Mohamud Ahmed; Fawwaz Wafa; Ezzidin Aboadla; Khairil Azhar Aznan
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 4: December 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (970.484 KB) | DOI: 10.11591/ijpeds.v8.i4.pp1919-1931

Abstract

This paper presents the combination of two different methods to perform the waveform analysis for PWM-operated inverter. The two techniques are Newton-Raphson method and Curve-Fitting as a PWM concept to operate PWM-based inverter, the proper solutions of switching angles can valuate the initial values by using the Newton-Raphson method with the wide-step calculation of modulation indices. The solutions are then compared using a curve in order to study the behavior. Then, the Curve-Fitting method is used to estimate the missing solutions between any points of wide-step calculation. This combination method can estimate the probable solutions that cannot be solved by Newton-Raphson method in a wide-ranging of the modulation index and reduce the calculation time. PWM-based inverter, which is obtained the switching angles by Newton-Raphson method and the combination of two different methods, is verified by the simulation results showing faster performance with improved Total Harmonic Distortion (THD) than both methods alone when compared the same values of switching angles.
Co-Authors Ezzidin Aboadla Fawwaz Wafa Khairil Azhar Aznan Majdee Tohtayong Mashkuri Yaacob Musse Mohamud Ahmed Nur Shahida Midi Siti Hajar Yusoff