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The report presents a simplified mathematical model of linear induction motor to study its thermal regimes. The model takes into account the heat removal from the active zone due to the movement of the secondary element. The estimation of influence of motor speed on the temperature of the elements of its design.
Paper is devoted to research of start-up modes of high-voltage asynchronous motor multi-stage blower. To reduce a voltage dips during starting of such motors are widely used soft starters based on a thyristor voltage converters. For high inertia drives with a long start-up mode an acceleration can be accompanied by overheating of the motor windings. In this paper we evaluated the possibility of reducing...
In this paper a thermal protection technique is presented by applying Particle Swarm Optimization (PSO) technique to thermally protect three phase Induction Motors (IMs), that are being successively starting, from operating beyond the IM thermal limits. This approach is implemented with PSO so as to determine the number of starting and operating times versus the IM thermal capability. This leads to...
The paper describes a lumped parameter thermal model of an electric motor of TEFC design. The transient thermal characteristics of the motor is estimated from a lumped parameter thermal model. Experiments were performed on a 3.5 H.P. capacitor run single-phase induction motor and the simulated results were verified with experimental data. It was found that the software gave a satisfactory estimation...
This paper proposes the complete closed-loop model development of a railway traction drive, also taking into account the coupling between electrical and thermal effects. The work is based on VHDL-AMS and consists of four sections: the first deals with the compact model development of the asynchronous motor and its corresponding control sequence; the second is devoted to the DC/AC converter with PWM...
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