Simulation is a powerful tool for developing electric drive systems. Simulations allow the designer to experiment with control algorithms and hardware systems in a safe environment. To this end simulation is becoming increasingly popular. On'-line simulation does have its limitations in that the controller developed during the simulation period has eventually to be transferred to the target processor which will operate in the actual drive system. If, however, a real-time simulation environment could be realised, then the actual controller running in the actual target processor could be included in the simulation. Therefore no translation of code would be required once the controller had been developed and tested within the simulation. This would obviously lead to a reduction in development time and eliminate any possibility of introducing errors due to the translation between the simulated and actual controllers. This thesis describes the development of such a system using a multiple digital signal processing environment. The real-time simulated drive is operated in parallel with an experimental drive to allow a direct comparison between the two. The ability of the multiple processing system to operate in real-time has allowed the whole concept of simulation to be taken a stage further by the development of a real-time power level simulator. This simulator is capable of emulating a machine and load in real-time with real level of voltage and current. It is designed to replace a real machine during the development and testing stages of drive manufacture. This Virtual Machine is a controllable source/sink which is driven by the real-time simulation, and because of this the Virtual Machine takes on the characteristics of any choice of model within the real-time simulation. Moreover, because of its ability to handle bi-directional power flow, the Virtual machine can be programmed to emulate motors or generators. The Virtual Machine also includes the emulation of loads, thus making it extremely flexible and of interest to applications such as machine tools, electric vehicles, and wind generators, to name but a few.

<p>У тези су предложена два унапређена алгоритма управљања<br />асинхроним мотором у условима када је број сензора који се користи у<br />погону минималан. Број сензора који се користи у повратној спрези<br />управљачког алгоритма сведен је на само један струјни сензор који<br />мери струју једносмерног међукола погонског инвертора. Предложене<br />методе елиминишу карактеристично изобличење реконструисаних<br />фазних струја и постижу бољи квалитет и перформансе управљања у<br />односу на конвенционалну методу. Сва аналитичка разматрања у тези<br />су праћена одговарајућим експерименталним резултатима, који<br />потврђују ефикасност предложених метода управљања.</p> / <p>U tezi su predložena dva unapređena algoritma upravljanja<br />asinhronim motorom u uslovima kada je broj senzora koji se koristi u<br />pogonu minimalan. Broj senzora koji se koristi u povratnoj sprezi<br />upravljačkog algoritma sveden je na samo jedan strujni senzor koji<br />meri struju jednosmernog međukola pogonskog invertora. Predložene<br />metode eliminišu karakteristično izobličenje rekonstruisanih<br />faznih struja i postižu bolji kvalitet i performanse upravljanja u<br />odnosu na konvencionalnu metodu. Sva analitička razmatranja u tezi<br />su praćena odgovarajućim eksperimentalnim rezultatima, koji<br />potvrđuju efikasnost predloženih metoda upravljanja.</p> / <p>This thesis proposes two improved and robust induction motor drive control<br />methods, in the case when there is a minimal number of sensors for<br />providing feedback signals. Number of used sensors is reduced to only one<br />current sensor measuring the inverter dc-link current. Proposed methods<br />cancels offset jitter-like waveform distortion present in the reconstructed<br />motor phase currents, and achieves higher quality and drive performance<br />regard to conventional current reconstruction mechanism. Effectivness of the<br />proposed methods are verified on developed HIL (hardware-in-the-loop)<br />platform and laboratory induction motor drive prototype.</p>

The aim of this thesis is to explore possibilities of rapid control prototyping, describe the concept of creating the software application in MATLAB/Simulink environment with use for development kit Texas instruments LaunchPad and create an application for DC and induction motor control in this environment. This work describes the application for unipolar/bipolar control H-Bridge of power converter for DC motor, measurement of output currents, speed and its displaying in real time using serial control interface. This thesis also desribes scalar and vector control of induction motor. All software applications with measurements are created in MATLAB/Simulink and attached to the thesis.