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|Title:||COMPARISON OF VARIOUS CONTROL TECHNIQUES CF MATRIX CONVERTER|
|Keywords:||ELECTRICAL ENGINEERING;CONTROL TECHNIQUES;MATRIX CONVERTER;AC-AC CONVERSION|
|Abstract:||In recent the progress of power device technology and development of large power integrated circuits have sparked renewed interest in direct AC-AC conversion. Although cycloconverters are well established as a means of direct AC-AC conversion, naturally commutated cycloconverters has serious problems as regard to output frequency range, input power factor and distortion of input and output waveform." Many of these problems can be overcome by a forced commutated cycloconverter comprising bilateral power switches, but more number of pulses is neede to achieve waveform quality with unrestricted output frequency resulting in more cost. Matrix converter is a three - pulse forced commutated cycloconverter. Matrix converter is an array of controlled semiconductor switches that connects directly the three-phase source to any of the three-phase source to any of the three-phase load without using any DC link or large energy storage elements, and therefore it is called "All silicon solution". This converter has several attractive features such as sinusoidal input and output currents, operation with unity power factor for any load, Regeneration capability. Various modulation techniques and control techniques are available for matrix converter. In this dissertation, Venturini modulation, Space Vector Pulse Width Modulation (SVPWM) techniques, Field Oriented Control (FOC) Technique and Direct Toque Control (DTC) have been discussed extensively. Simulation models of these control strategies are developed in MATLAB Simulink. This thesis concluded that the matrix converter will be a powerful alternative to the existing drives in the Future and presents comparison of FOC and DTC control techniques of Matrix converter. Recently the FPGA devices have been improved and the their application has expanded from prototyping tasks to telecommunication, image and sound processing and power electronics. In this dissertation, implementation of Space vector modulation and Field oriented control with using FPGA has been discussed and simulation results have shown.|
|Research Supervisor/ Guide:||Agarwal, Pramod|
|Appears in Collections:||MASTERS' DISSERTATIONS (Electrical Engg)|
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