magistrsko delo
Vincenc Pečar (Author), Gorazd Štumberger (Mentor), Drago Dolinar (Co-mentor)

Abstract

V delu je predstavljena na uporabi optimizacijske metode temelječa izvedba vodenja sinhronskega stroja s trajnimi magneti (SSTM) brez merilnika položaja.Uporabljen je močno poenostavljen dvoosni magnetno nelinearni matematični model SSTM v katerem so upoštevane različne in spremenljive vrednosti induktivnosti v oseh d in q. Za vodenje je uporabljen princip vektorske regulacije v orientaciji polja trajnega magneta. Predstavljeni so postopki določanja parametrov dvoosnega nelinearnega modela sinhronskega stroja s trajnimi magneti, ki je opisan z napetostnima enačbama in enačbo gibanja. Opisani so postopki določanja parametrov regulatorjev toka, regulatorja hitrosti in parametrov nelinearnega opazovalnika. Pri določitvi slednjih je kot optimizacijska metoda uporabljena direktna naključna iskalna metoda diferenčne evolucije, ki spada med evolucijske strategije. Opazovalnik je zasnovan na razliki med merjenima in z opazovalnikom izračunanima tokoma SSTM. Brezsenzorsko vodenje je izvedeno z vključitvijo opazovalnika v strukturo vektorskega vodenja. Delovanje predlaganega brezsenzorskega vodenja sinhronskega motorja s trajnimi magneti je potrjeno z eksperimentalnimi rezultati. Pri tem je podana primerjava izmerjenih in z nelinearnim opazovalnikom izračunanih časovnih potekov položaja rotorja pri različnih hitrostih.

Keywords

sinhronski stroji s trajnimi magneti;magnetne nelinearnosti;dinamični model;brezsenzorsko vodenje;optimizacija;

Data

Language: Slovenian
Year of publishing:
Source: Maribor
Typology: 2.09 - Master's Thesis
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: [V. Pečar]
UDC: 621.313.077.7
COBISS: 12828182 Link will open in a new window
Views: 3485
Downloads: 293
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Other data

Secondary language: English
Secondary title: Realization of permanent magnet synchronous motor sensorless control with considered different inductances in the d- and q-axis based on optimization procedure
Secondary abstract: This work presents realization of a closed-loop permanent magnet synchronous motor (PMSM) sensorless control based on an optimization procedure. A simplified magnetically nonlinear two-axis dynamic model of PMSM with different and variable inductances in the d- and q-axis is used for design of a permanent magnet flux linkage vector oriented speed vector control. Procedures applied for determining parameters of the magnetically nonlinear two-axis dynamic PMSM are presented together with procedures applied for determining parameters of current and speed controllers as well as parameter of a nonlinear-state observer. A direct stochastic search algorithm called differential evolution is applied, together with the nonlinear models of the PMSM, its nonlinear state-observer and closed-loop sensorless control, in order to determine parameters of nonlinear state-observer. The state-observer is designed on the error between measured and by the state-observer estimated values of the state-variables. The sensorless control is achieved by inclusion of the state-observer in the closed loop speed vector control of the PMSM. The obtained closed-loop sensorless control is confirmed by the experiments performed with an appropriate experimental set-up. The measured and observer estimated rotor positions are compared at different rotor speeds.
Secondary keywords: permanent magnet synchronous motor;magnetic nonlinearities;dynamic model;sensorless control;optimization;
URN: URN:SI:UM:
Type (COBISS): Master's thesis
Thesis comment: Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko
Pages: [XIII], 119 f.
Keywords (UDC): applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;mechanical engineering in general;nuclear technology;electrical engineering;machinery;strojništvo;electrical engineering;elektrotehnika;
ID: 14395