Simulation of induction motor operation in a drive cycle of a low-floor tram

U ovome radu je prikazan elektromotorni pogon niskopodnog tramvaja, pokretan asinkronim motorom. Ukratko je opisana fizikalna slika kretanja tramvajskog pogona. Na temelju zadane dionice vožnje izračunati su sile i momenti. Iz njih su izračunate električne veličine: struja, napon, faktor snage i električna snaga. Motor je upravljan vektorskom regulacijom koja omogućuje neovisno upravljanje strujama momenta i toka. Analitičkim proračunom dobiven je približni model motora koji može ostvariti zadane zahtjeve postavljenje pred njega. Taj je proračun iskorišten za dimenzioniranje pomoću programske podrške, u kojem je napravljena i njegova temperaturna analiza.This thesis analyses electric drive of a low-floor tram, driven by an induction motor. Physical properties of tram motion are described shortly. Mechanical forces and torques are calculated based on duty cycle given in advance. Based on them, electrical values are calculated: current, voltage, power factor and power. Induction motor is vector controlled which enables independent control of torque current and flux current components. Analytical calculation has provided an approximate model of induction motor that can accomplish pre-set requirements. This calculation is used for dimensioning using computer software where temperature analysis is also carried out