Yazar "Akar, O." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Yayın
    A new speed control technique for a separately excited direct current motor by PID
    (2018) Özgönenel, O.; Terzi, U. K.; Akar, O.
    Abstract—In this study, by deriving electro-mechanic mathematical model of separately excited direct current motor (SEDCM) via equivalent circuit, a new control block diagram has been formed. By using this block diagram, state space model of SEDCM has been created and block diagram of motor has been formed in Matlab Simulink environment. Steady state and transient values of armature current, emf, produced torque, speed and position angle have been obtained using this new model. By adding PID controller to block diagram, SEDCM has been remodeled. Finally, results of steady state and transient analysis of SEDCM have examined through speed control of the proposed model.It is reported that the suggested modeling technique is able to analyze the speed control of the SEDCM.
  • Küçük Resim
    Yayın
    Analyzing high efficiency asynchronous motors using scalar control technique
    (2018) Uzun, H.; Akar, O.; Demirci, A.; Akuner, M. C.; Terzi, U. K.
    In industry, more than half of the total electrical energy produced in developed countries is converted into mechanical energy by electric motors. The usage rate of asynchronous motors is estimated to be 90% of all electric motors. For these motors, an improvement in efficiency may result in huge savings. These electric motors which have minimized losses can be improved with speed control drives to be more efficient in terms of energy consumption and performance. In speed control drives of asynchronous motors widely used in industry; scalar, vector control and direct torque control are used.In this study, in a Matlab/Simulink environment, high efficiency and standard asynchronous motors with the same characteristics were driven with scalar control technique and the simulations were compared in detail. From the point of view of both speed control performance and energy saving, it observed that high efficiency motors have more advantages.