Supply voltage and resistant torque influence on dynamic characteristics of reluctance synhronous motors
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2013, Vol 37, Issue 37
Abstract
The reluctance synchronous motors, as well as the synchronous permanent magnet motors, are the best solution from technical and economic point of view, for low and middle powers. This paper presents a series of simulations of the dynamic regime behaviour for such a motor. The simulations are carried out for cases of stepped modification of the supply voltage and the resistant torque, respectively. There are presented the mathematical model used (the two axes theory mathematical model of the motor written in matrix form) and the Matlab simulation program for the case of the supply voltage modification. There are detailed five sets of characteristics obtained for five concrete situations of torques, voltages and inertia moments. Finally there are presented the conclusions obtained by study: the dynamic stability decreases at the same time with the supply voltage decrease (when the decrease is under a certain limit, the synchronism is lost); the reluctance synchronous motors has a different behaviour over different values of the torque shock, at the same inertia moment; the synchronism loss is conditioned by the value of the applied torque shock; the previous conclusions emphasize the fact that the reluctance synchronous motors static stability is dependent both on the disturbance magnitude and character and on the initial conditions; with the help of some simulations like the ones presented before it is possible to establish the dynamic stability limit for each reluctance synchronous motors, which is an important work instrument for the designers of such type of motors.
Authors and Affiliations
Sorin Enache, Aurel Campeanu, Ion Vlad, Monica-Adela Enache
Keywords
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