Developing a new linear induction motor drive with Z-source inverter using a DSP

The main focus of this thesis is to develop a linear induction motor drive hardware and software control system with Z-source inverter. Within this framework, the study involves the analysis and Matlab/Simulink computer simulation of the mathematical representation of the linear induction motor including end-effect, direct thrust control, and space vector modulation technique for Z-source inverter.This thesis proposes an improvement in flux estimation algorithm by taking into end effect. Improved accuracy of the estimated flux linkage is shown to obtain a more accurate electromagnetic thrust model using direct thrust controller. To estimate the stator flux and thrust correctly, a discrete form of the low-pass filter including magnitude and phase errors compensation terms is used instead of a pure integrator to prevent the integral instability.The real-time experiments have been carried out by the use of Texas Instruments TMS320F2812 digital signal processor and ?Code Composer Studio? software tools. The recently developed Z-source inverter provides a way of boosting the input voltage, a condition that cannot be obtained in the traditional inverters. It also allows the use of the shoot-through switching state, which eliminates the need for dead-times that are used in the traditional inverters to avoid the risk of damaging the inverter circuit.The results obtained from the simulations and experiments conducted in this study illustrate that it has been possible to increase the inverter bridge voltage about 90% above the input dc link voltage by controlling its shoot-through period.