Abstract
The paper presents the mechanical and electrical characteristics of the synchronous motor at different imposed variations of torque over time. Modelling the resistive torque allows the loading with different capacities vibrations. The experimental setup is designed and presented in such a way as to allow a servomotor to stop the synchronous motor in variable torque values. The resulting characteristics highlight the mechanical characteristics of the synchronous motor as well as the resistance to repeated sudden repeated breaking within a shorter or longer period, observing the evolution of the speed up to the point of desynchronisation of the motor. It is presented the mechanical characteristics of the mechanical power, electrical current, rotational speed and mechanical torque in function of time observing the behaviour of the synchronous machine when applying sudden varying resistive torques and its de-synchronization. The determination of these characteristics is made at a constant value of the excitation current.
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