Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Electric motors, Induction"”.
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Case study comparisons of standard and energy efficient polyphase induction motors subjected to unbalances phase voltages
… of standard and energy efficient polyphase induction motors under unbalanced phase voltage conditions ofup to 5 percent. Motors sizes of 25, 50, 100,150,200, 250 and 300 hp are used in this investigation. Computer simulations are used to study the efficiencies, power losses and economics of …
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Microprocessor based protection of induction motors using thermal, mechanical, and skin effect electrical models to predict motor temperature rise
This study investigates induction motor performance during a variety of system and load conditions. A computer simulation is used to characterize the motor behavior during normal operation, lockedrotor case, high inertia loading, and overloading conditions. Motor temperature at critical points is …
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Slip meter
Thesis (B.S.)--Michigan Agricultural College, 1924
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A Comparison of three phase induction motor performance subjected to frequency, voltage, and load changes by PWM and square wave inverters
This paper presents a comparison of three-phase induction motor performance subjected to frequency, voltage and load changes by Square wave inverter and Pulse Width Modulated (PWM) inverter. A computer program which is backed by a laboratory study is used to characterize the motor performance …
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Anti-lock braking technique
This project is aimed at understanding passenger car braking systems together with the hazards in cases of wheel locking. After the objectives for an anti-lock system are analysed, increasing vehicle safety using a microprocessor based monitoring system to provide anti-lock function is considered.
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Parameter identification for vector controlled induction motor drives using artificial neural networks and fuzzy principles
… and stator resistances of a rotor flux oriented induction motor drive, with the best possible convergence results using artificial neural networks and fuzzy logic systems. The thesis focuses mainly on identifying the rotor resistance, which is the most critical parameter for RFOC. Limitations of …
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Improvements in direct torque control of induction motors
Electrical motors have been increasingly employed for more than a century to convert electrical energy into mechanical energy. The wide variety of existing applications requires in many cases a very precise control of the electrical motor by means of a variable speed drive incorporating …