Dinamični simulacijski model kolesnega električnega pogona

TREVEN, MARTIN (avtor), Fišer, Rastko (mentor)

V magistrskem delu smo se osredotočili na pogonski sklop električnega vozila. Glavni poudarek je bil na modeliranju električnega motorja, močnostnega pretvornika in implementaciji regulacijskega algoritma. Najprej smo raziskali matematične modele sinhronskega motorja s trajnimi magneti (v nadaljevanju krajše SMTM) v rotorskem koordinatnem sistemu. Izpostavili smo 4 modele in predstavili aplikacije, za katere je posamezen model najbolj primeren. Po obravnavi SMTM se osredotočimo na močnostni pretvornik (v nadaljevanju krajše MP) in ustrezno upoštevanje padca napetosti na močnostnih stikalih. V nadaljevanju ovrednotimo izgube v SMTM. Za določitev izgub v trajnih magnetih razvijemo hibridni model, ki deluje na osnovi metode končnih elementov v dveh dimenzijah (v nadaljevanju krajše 2D MKE) in analitičnega izračuna v treh dimenzijah. Model za izračun izgub v trajnih magnetih primerjamo s tridimenzionalnim modelom na osnovi metode končnih elementov (v nadaljevanju krajše 3D MKE). Vso teoretično obravnavo prestavimo v simulacijsko okolje Matlab Simulink in prikažemo razviti dinamični simulacijski model SMTM z MP, ki omogoča hitro simulacijo različnih obratovalnih stanj pogona. Simulacijske rezultate iz simulacijskega modela ovrednotimo z meritvami na realnem delujočem sistemu.

• Jezik: Slovenski jezik
• Ključne besede: sinhronski motor s trajnimi magneti, magnetni sklepi, dinamični simulacijski model, metoda končnih elementov, močnostni pretvornik, vrtinčni tokovi, trajni magnet
• Vrsta gradiva: Magistrsko delo/naloga
• Organizacija: FE - Fakulteta za elektrotehniko
• Leto izida: 2017
• PID: 20.500.12556/RUL-96664
• Datum objave v RUL: 09.10.2017

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Dynamic simulation model of in-wheel electrical drive

Izvleček

In the master's thesis, the dynamic model of electric drive was developed. Specific focus was given to the physical representation of electric motor, inverter and the implementation of the control algorithm. Firstly, we investigated the mathematical models of a permanent magnet synchronous motor in the rotor reference frame. We outlined four possible representations of flux-current relationship with different degree of complexity and determined for which applications each of them is the most suitable. Then, we focused on the inverter model, where special consideration was given to the proper description of the voltage drop on the power switches. Secondly, the losses in the SMTM were considered in detail. In order to determine losses in permanent magnets, we developed a hybrid model based on combination of 2-D finite-element method and an analytical calculation in three dimensions. The model was subsequently verified with results from a 3-D finite element method model. Thirdly, the above theoretical considerations were implemented in dynamic simulation using Matlab Simulink environment. It was demonstrated, that the resulting model of the electrical drive allows for rapid simulations of the various operational conditions. At the end, the simulations were compared with measurements on the actual drive. The agreement between simulations and measurements was good, in some cases even excellent.

• Ključne besede: permanent magnet synchronous motor, flux-based model, dynamic simulation model, finite element method, inverter, space vector modulation, eddy currents, permanent magnet