doktorska disertacija
Dalibor Igrec (Author), Bojan Štumberger (Mentor)

Abstract

Delo obravnava načrtovanje, modeliranje in vodenje Sinhronskega Reluktančnega Generatorja z Dvojnim Statorskim Navitjem (SRGDSN), ki predstavlja izrazito magnetno nelinearen sistem. Nelinearnost sistema je posledica nelinearnosti uporabljenega aktivnega magnetnega materiala in posledično nelinearne odvisnosti inducirane napetosti primarnega (bremenskega) navitja v odvisnosti od vzbujanja sekundarnega (vzbujalnega) navitja ter hitrosti vrtenja rotorja. V statorskem paketu SRGDSN sta nameščeni dve trifazni pasovni statorski navitji z enakim številom polov. Prvo trifazno statorsko navitje, ki skrbi za vzbujanje celotnega sistema, imenujemo vzbujalno statorsko navitje, drugo trifazno statorsko navitje, iz katerega se vrši odjem električne energije, pa bremensko statorsko navitje. Pri načrtovanju SRGDSN je za določitev konstrukcije SRGDSN uporabljen model stroja s porazdeljenimi parametri, ki sloni na izračunih porazdelitve magnetnega polja modela stroja s pomočjo dvodimenzionalne metode končnih elementov (2D MKE), kjer je bil upoštevan vpliv realne geometrije stroja in vpliv magnetnih nelinearnosti stroja v vseh ustaljenih obratovalnih stanjih SRGDSN. Parametri modela električnega podsistema SRGDSN s koncentriranimi parametri so bili določeni s pomočjo modela SRGDSN s porazdeljenimi parametri v obliki pozicijsko in tokovno odvisnih nelinearnih karakteristik magnetnih sklepov sekundarnega in primarnega navitja. S trifazno-dvofazno transformacijo in rotacijsko transformacijo je zapis originalnega trifaznega modela preveden v zapis dvoosnega modela. S tem postanejo magnetno nelinearne karakteristike magnetnih sklepov funkcije položaja rotorja in vseh tokov sekundarnega in primarnega navitja. Glede na naravo SRGDSN je za performančno optimiziran režim vodenja izbrana metoda teorije robustne sinteze povratne zanke (ang. Quantitative feedback theory – QFT). Razlog za izbor metode QFT je njeno neposredno upoštevanje vpliva negotovosti parametrov sistema.

Keywords

sinhronski reluktančni generatorji;rotorji z magnetnimi pregradami;dvojno statorsko navitje;magnetna sklopljenost;metoda končnih elementov;doktorske disertacije;

Data

Language: Slovenian
Year of publishing:
Typology: 2.08 - Doctoral Dissertation
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: [D. Igrec]
UDC: 621.3.045:621.313(043.3)
COBISS: 19779862 Link will open in a new window
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Other data

Secondary language: English
Secondary title: Design, modeling and control of dual-winding synchronous reluctance generator
Secondary abstract: The thesis deals with the design, modeling and control of dual-winding synchronous reluctance generator (SRGDSN), which is highly magnetically nonlinear system. The system nonlinearity is the result of the nonlinearity of active magnetic material and nonlinear dependence of induced voltage in the primary winding as a function of the excitation in the secondary winding and the rotational rotor speed. The SRGDSN stator contains two three-phase stator windings with the same number of poles. The first three-phase stator winding is responsible for the excitation of the entire system and is called excitation stator winding. While the second three-phase stator winding, from which electrical energy is performed, is called load stator winding. When determining the most appropriate structure of SRGDSN the machine model with distributed parameters was used. It is based on the calculation of the magnetic field distribution by means of two-dimensional finite element method (2D MKE), where the impact of the real machine geometry and the influence of magnetic nonlinearity in all established operating conditions of SRGDSN was taken into account. Model parameters of SRGDSN electrical subsystem with concentrated parameters were determined by using the model SRGDSN with distributed parameters in the form of position and current dependent nonlinear magnetic characteristics. The original three-phase model is transformed into the two-axis flux linkage oriented model with help of the three-to-two phase transformation and the rotational transformation. Consequently, the magnetically nonlinear characteristics of the flux linkage became a function of the rotor position and all currents of primary and secondary winding. For performance-optimized control of SRGDSN the Quantitative feedback theory (QFT) was chosen. The robust control QFT method was used due to the fact, it directly takes into account the impact of system parameters uncertainties.
Secondary keywords: reluctance generators;multiple-barrier rotor;dual stator winding;magnetic coupling;finite element method;quantitative feedback theory;Reluktančni generatorji;Disertacije;
URN: URN:SI:UM:
Type (COBISS): Dissertation
Thesis comment: Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko
Pages: 272 str.
ID: 9161293