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This paper describes a novel topology of soft starter for induction motors. Unlike the thyristerized soft starter, the proposed circuit configuration utilizes the self-commutated device to replace the thyristor as the switch on the supply line. The operating principle of the control system is analyzed. The transient process during starting has been studied using a presented mathematical model which...
For linear motor system, which is an electromechanical multi-parameter, strong coupling, multi-variable, strong non-linear system, the fact that the system control is difficult to carry out is becoming increasingly prominent. This paper proposes an analysis of relative weights of various factors for thrust fluctuations in permanent magnet synchronous linear motor (PMSLM) based on the Fuzzy Analytic...
All kinds of motorized-wheel structures are analyzed. For the unitary motorized wheel, since increasing the unsprung mass of vehicle, it adds adverse effects on the vehicle road holding performance and vehicle comfortableness. To decrease the adverse effect for unsprung mass increasing, a method by attaching the motor in the wheel through springs and dampers of exclusive use is brought out. It is...
Linear induction motor has been applied to magnetic suspension maglev and metro vehicle. Its thrust and normal force analyses are important basis of motor design and control. The longitudinal end effects have strong influence to performance of linear induction motor, we consider this influence through equivalent EMF. Aiming to the conductivity of secondary and ferromagnetic secondary, transverse edge...
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