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Control of salient PM machine using d-q frame machine model and Matlab Simulink
Dušek, Jiří ; Huták, Petr (referee) ; Ondrůšek, Čestmír (advisor)
Tato práce se zabývá synchronním motorem s permanentními magnety na rotoru (PMSM), jeho modelováním a návrhu regulační struktury. V práci jsou uvedeny způsoby a výhody použití permanentních magnetů v elektrických motorech. Dále se práce zabývá transformací třífázové soustavy do dq0. Pomocí Parkovy transformace jsou v práci odvozeny rovnice stroje v dq0 souřadnicovém systému a vytvořeny náhradní schémata stroje v dq osách. Rovnice i schémata zahrnují jak ztráty v mědi, tak ztráty v železe. Náhradní schémata jsou popsány elektrickými a mechanickými rovnicemi a následně překresleny do grafické podoby v programu Matlab Simulink. Vytvořeny jsou dva modely PMSM, jeden s uvažováním ztrát v železe a druhý bez těchto ztrát. Pro oba dva modely je zde popsán postup návrhu regulátorů proudu a otáček. Pro model, u kterého jsou uvažovány ztráty v železe je navíc použito více druhů řídicích strategií a tyto strategie jsou mezi sebou navzájem porovnány.
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Permanent Magnet Synchronous Machine Sensorless Control Algorithms
Veselý, Libor ; Prokop, Roman (referee) ; Melichar,, Jiří (referee) ; Václavek, Pavel (advisor)
Algorithms of sensorless control of surface permanent magnet synchronous motors are discussed in the dissertation thesis. A method for position and speed estimation in high-speed region based on model reference adaptive system is described. Furthermore, classical approach using Kalman filtering was verified. Kalman filter expected the rotor speed to be constant as a modification of model using variable speed approach. These algorithms are not able to work at low speed region, thus a new method was proposed. This method is designed on extended Kalman filtering and uses the model which describes the stator inductance changes in - coordinates. At motor start, knowledge of initial rotor setup is required. The algorithm for initial rotor angle using high frequencies injected into the motor was proposed.
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Electromagnetic calculation of an electrical machine for Aerospace applications
Halašta, Vítězslav ; Knebl, Ladislav (referee) ; Bárta, Jan (advisor)
This bachelor thesis deals with the electromagnetic calculation of an electrical machine for aerospace applications. Description of the state of art trends that are currently being used in the aircraft industry and requirements for such machines were formulated. Further, electromagnetic model of the machine designed for aerospace applications is created and the electromagnetic calculation using the finite element method is performed. A design process and a comparison of machines designed for this application is also included. The modeled machine was simulated at no load, rated load and faulty condition. Reasons behind the choice of permanent magnet synchronous motor alongside particular steps in design required for machine application in aerospace are presented in the conclusion. There is also discussed, whether the modeled machine is correctly designed for aerospace application.
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Design and analysis of PMSM with concentrated winding
Macek, Pavel ; Ondrůšek, Čestmír (referee) ; Vítek, Ondřej (advisor)
Permanent magnet synchronous machine (PMSM) are widely used in many industrial applications. This thesis starts with familiarization with the properties and structure of each type of synchronous machines with permanent magnets. Subsequently there are described properties and possible division of AC winding types. Afterward analytical designs of four machines with two different types of winding were realized. These designs were compared by means of simulations using the RMxprt program and their properties were subsequently verified by method of finite element using the Maxwell 2D program. Evaluation and comparison in terms of utility properties for all designs of machines were performed at the conclusion of this thesis.
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Model of electric vehicle in SIMULINK/SIMSCAPE program
Kachlík, Jan ; Klíma, Bohumil (referee) ; Huzlík, Rostislav (advisor)
The topic of this diploma thesis is mathematical model of electric vehicle. The traction drive consists of Li-Ion battery, free-phase DC/AC converter and permanent magnet synchronous machine. The main goal of the thesis is development of function model and making simulations in SIMULINK/SIMSCAPE program. Work is divided into three main parts. The first part is dedicated to the theoretical description of the main drive components. The second part describes partial subsystems of the model. In the last part is build a complete model of electric vehicle and simulated different driving mode.
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Electromagnetic calculation of an electrical machine for Aerospace applications
Halašta, Vítězslav ; Knebl, Ladislav (referee) ; Bárta, Jan (advisor)
This bachelor thesis deals with the electromagnetic calculation of an electrical machine for aerospace applications. Description of the state of art trends that are currently being used in the aircraft industry and requirements for such machines were formulated. Further, electromagnetic model of the machine designed for aerospace applications is created and the electromagnetic calculation using the finite element method is performed. A design process and a comparison of machines designed for this application is also included. The modeled machine was simulated at no load, rated load and faulty condition. Reasons behind the choice of permanent magnet synchronous motor alongside particular steps in design required for machine application in aerospace are presented in the conclusion. There is also discussed, whether the modeled machine is correctly designed for aerospace application.
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Permanent Magnet Synchronous Machine Sensorless Control Algorithms
Veselý, Libor ; Prokop, Roman (referee) ; Melichar,, Jiří (referee) ; Václavek, Pavel (advisor)
Algorithms of sensorless control of surface permanent magnet synchronous motors are discussed in the dissertation thesis. A method for position and speed estimation in high-speed region based on model reference adaptive system is described. Furthermore, classical approach using Kalman filtering was verified. Kalman filter expected the rotor speed to be constant as a modification of model using variable speed approach. These algorithms are not able to work at low speed region, thus a new method was proposed. This method is designed on extended Kalman filtering and uses the model which describes the stator inductance changes in - coordinates. At motor start, knowledge of initial rotor setup is required. The algorithm for initial rotor angle using high frequencies injected into the motor was proposed.
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Design and analysis of PMSM with concentrated winding
Macek, Pavel ; Ondrůšek, Čestmír (referee) ; Vítek, Ondřej (advisor)
Permanent magnet synchronous machine (PMSM) are widely used in many industrial applications. This thesis starts with familiarization with the properties and structure of each type of synchronous machines with permanent magnets. Subsequently there are described properties and possible division of AC winding types. Afterward analytical designs of four machines with two different types of winding were realized. These designs were compared by means of simulations using the RMxprt program and their properties were subsequently verified by method of finite element using the Maxwell 2D program. Evaluation and comparison in terms of utility properties for all designs of machines were performed at the conclusion of this thesis.
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Model of electric vehicle in SIMULINK/SIMSCAPE program
Kachlík, Jan ; Klíma, Bohumil (referee) ; Huzlík, Rostislav (advisor)
The topic of this diploma thesis is mathematical model of electric vehicle. The traction drive consists of Li-Ion battery, free-phase DC/AC converter and permanent magnet synchronous machine. The main goal of the thesis is development of function model and making simulations in SIMULINK/SIMSCAPE program. Work is divided into three main parts. The first part is dedicated to the theoretical description of the main drive components. The second part describes partial subsystems of the model. In the last part is build a complete model of electric vehicle and simulated different driving mode.
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Control of salient PM machine using d-q frame machine model and Matlab Simulink
Dušek, Jiří ; Huták, Petr (referee) ; Ondrůšek, Čestmír (advisor)
Tato práce se zabývá synchronním motorem s permanentními magnety na rotoru (PMSM), jeho modelováním a návrhu regulační struktury. V práci jsou uvedeny způsoby a výhody použití permanentních magnetů v elektrických motorech. Dále se práce zabývá transformací třífázové soustavy do dq0. Pomocí Parkovy transformace jsou v práci odvozeny rovnice stroje v dq0 souřadnicovém systému a vytvořeny náhradní schémata stroje v dq osách. Rovnice i schémata zahrnují jak ztráty v mědi, tak ztráty v železe. Náhradní schémata jsou popsány elektrickými a mechanickými rovnicemi a následně překresleny do grafické podoby v programu Matlab Simulink. Vytvořeny jsou dva modely PMSM, jeden s uvažováním ztrát v železe a druhý bez těchto ztrát. Pro oba dva modely je zde popsán postup návrhu regulátorů proudu a otáček. Pro model, u kterého jsou uvažovány ztráty v železe je navíc použito více druhů řídicích strategií a tyto strategie jsou mezi sebou navzájem porovnány.
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