Starting and speed control of an induction motor

U završnom radu opisan je princip rada asinkronog motora te način na koji se stvara okretno magnetsko polje i inducira napon na rotoru. Izvršena je podjela asinkronih motora na kliznokolutne i kavezne te je ukratko opisan svaki od njih. Posebno su obrađeni načini pokretanja i regulacija brzine vrtnje asinkronih motora, gdje je detaljno opisan svaki način pokretanja i regulacije. U sklopu regulacije brzine vrtnje objašnjen je koncept višebrzinskih motora i reverziranje. Objašnjeni su režimi rada motora, a posebno generatorsko kočenje i protustrujno kočenje. U konačnici napravljena je simulacija dinamičke i statičke karakteristike iz kojih je jasno vidljivo kako se mijenja moment s promjenom parametara motora.The final paper describes the principle of operation of the asynchronous motor and the way in which the agile magnetic field is created and the voltage on the rotor is induced. The division of asynchronous motors into sliding and caged motor was carried out and each of them was briefly described. In particular, the ways of starting and regulating the speed of rotation of asynchronous motors are specially processed, where each method of start and regulation is described in detail. As part of the revolving speed regulation, the concept of multi-speed motors and reversing are explained. Motor modes, especially generator braking and counter-current braking, are explained. Finally, a simulation of the dynamic and static characteristic was made, from which it is clearly visible how the torque changes with the change of engine parameters