doktorska disertacija
David Stojan (Author), Gorazd Štumberger (Mentor)

Abstract

V doktorski disertaciji je predstavljeno brezsenzorsko vektorsko vodenje sinhronskega stroja s trajnimi magneti za puhala s širokim razponom hitrosti vrtenja. Volumski pretok zraka skozi puhalo je pri nizkih hitrostih vrtenja zelo majhen, zato puhala obratujejo pri pretežno višjih hitrostih. Iz tega razloga se ta disertacija posveča problematiki brezsenzorskega vodenja sinhronskega stroja s trajnimi magneti v področju slabljenja polja in višjih hitrosti vrtenja. Predstavljena izvedba brezsenzorskega vodenja je primerna za širšo industrijsko uporabo. Zaradi relativne enostavnosti je izvedbo vodenja mogoče uporabiti tudi v nizkocenovnih industrijskih aplikacijah. Izvedba vodenja puhalo najprej zažene do določene hitrosti vrtenja z odprto hitrostno regulacijsko zanko. Ob zadostni hitrosti vrtenja se hitrostna regulacijska zanka sklene tam, kjer je informacija o položaju rotorja in hitrosti vrtenja dobljena z uporabo PLL-opazovalnika. Eden izmed osrednjih delov te disertacije je tudi analiza občutljivosti dveh struktur PLL-opazovalnika na variacijo parametrov sinhronskega stroja s trajnimi magneti. Na podlagi analize je izbrana struktura PLL-opazovalnika, ki je primerna za uporabo v širokem področju hitrosti vrtenja. Širok razpon hitrosti vrtenja dosežemo z novo izvedbo vodenja sinhronskega stroja s trajnimi magneti v področju slabljenja polja, ki izkoristi vso razpoložljivo napetost na enosmernem vodilu pretvornika. Izvedena je analiza stabilnosti nove izvedbe vodenja, na podlagi katere so podana navodila za izbiro parametrov izvedbe vodenja, da je zagotovljeno stabilno obratovanje sinhronskega stroja v področju slabljenja polja. Izvedena je simulacijska in eksperimentalna primerjava učinkovitosti delovanja nove in obstoječe izvedbe vodenja. Iz primerjave je razvidno, da je pri uporabi nove izvedbe prehod iz področja konstantnega navora v področje obratovanja v slabljenju polja bolj gladek. Na koncu je delovanje izbranega PLL-opazovalnika in nove izvedbe vodenja za obratovanje v področju slabljenja polja preverjeno eksperimentalno na puhalu, ki obratuje v zelo širokem razponu hitrosti vrtenja.

Keywords

brezsenzorsko vodenje;sinhronski stroji s trajnimi magneti;slabljenje polja;pogon za puhala;

Data

Language: Slovenian
Year of publishing:
Source: Maribor
Typology: 2.08 - Doctoral Dissertation
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: [D. Stojan]
UDC: 621.313.323-58(043.3)
COBISS: 265977600 Link will open in a new window
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Other data

Secondary language: English
Secondary title: Sensorless control of permanent magnet synchronous machine for broad speed range blower applications
Secondary abstract: In this thesis a sensorless field oriented control of permanent magnet synchronous machine for blower applications opearting in a wide range of speeds is presented. At low speeds of rotation, volume air flow through the blower is very small, therefore, blowers operate predominantly at higher speeds. Consequently, sensorless control issue of this work is focused on higher speeds and on field weakening control of the synchronous machine. Presented sensorless field oriented control is suitable for general industrial use. Due to its relative simplicity, it can also be used in low-cost industrial applications. The blower first starts up to a certain speed of rotation with the open speed control loop. At sufficient speed of rotation, the speed control loop is closed. The machine rotor position and the speed of rotation, is obtained by the PLL observer. One of the central parts of this thesis is the sensitivity analysis, given for two different PLL observer structures. Based on given analysis, the PLL observer structure, which is suitable for the use in a wide range of speeds, is selected. A wide range of speed of rotation is achieved with the new field weakening control structure of the permanent magnet synchronous machine, where all the available dc-bus voltage of inverter is exploited. Further, stability analysis of the new filed weakening control structure is made. Based on the performed analysis guidelines for the proper choice of parameters for the field weakening control structure are given, so that the stable operation of the machine is assured. The results of simulations and experiments are compared for the new and allready existing field weakening control structure. The comparison shows, that when the new field weakening control structure is applied, the transition of the machine between the constant torque and field weakening region of operation is smoother. At the end, the proposed sensorless field oriented control using the PLL observer and the new field weakening control structure is verified experimentally, on the blower, operating in a broad range of speeds.
Secondary keywords: sensorless control;permanent magnet synchronous machine;field weakening;blower drive;Sinhronski stroji;Disertacije;Vodenje;
URN: URN:SI:UM:
Type (COBISS): Dissertation
Thesis comment: Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko
Pages: [XVI], 133 str.
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: 1027379