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Analysis of 1,1 MW permanent magnet synchronous motor
Homolová, Romana ; Cipín, Radoslav (referee) ; Vítek, Ondřej (advisor)
This thesis deals with the elaboration of The Permanent Magnet Synchronous Motor and the calculation of its parameters. In the first part, the construction and used permanent magnets of this motor are listed here. The next part of the thesis contains a short overview of the stator windings, the calculation of the winding factors and calculation of the basic parameters of the stator winding. The calculation of the magnetic induction in the air gap is also illustrated here. The result is recalculated by using the Carter factor and then the value of the first harmonics of air-gap flux density is determined. The result is compared with the analysis in the program FEMM. The next part of the thesis is creating a comprehensive overview of the machine using a replacement circuit diagram and phasor diagrams. Finally, the thesis contains model created in RMxprt and ANSYS Maxwell. The results of the model analysis are compared with the analytical calculation
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Monitoring and Diagnosis Algorithms for Synchronous Motor Drives
Otava, Lukáš ; Glasberger, Tomáš (referee) ; Lettl, Jiří (referee) ; Václavek, Pavel (advisor)
Permanent magnet synchronous machine drives are used more often. Although, synchronous machines drive also suffer from possible faults. This thesis is focused on the detection of the three-phase synchronous motor winding faults and the detection of the drive control loop sensors' faults. Firstly, a model of the faulty winding of the motor is presented. Effects of the inter-turn short fault were analyzed. The model was experimentally verified by fault emulation on the test bench with an industrial synchronous motor. Inter-turn short fault detection algorithms are summarized. Three existing conventional winding fault methods based on signal processing of the stator voltage and stator current residuals were verified. Three new winding fault detection methods were developed by the author. These methods use a modified motor model and the extended Kalman filter state estimator. Practical implementation of the algorithms on a microcontroller is described and experimental results show the performance of the presented algorithms in different scenarios on test bench measurements. Highly related motor control loop sensors fault detection algorithms are also described. These algorithms are complementary to winding fault algorithms. The decision mechanism integrates outputs of sensor and winding fault detection algorithms and provides an overall drive fault diagnosis concept.
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Interpreting Constraints In Finite Control Set Model Predictive Control
Kozubík, Michal
Aim of this paper is to show the possibilities of interpreting the constraints while using finite control set model predictive control. Paper explains the problem of the barrier functions and shows typical example. New possible candidates to barrier function are introduced in this article. All candidates are tested on the problem of the finite control set model predictive control of the PMSM drive control.
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Parameters Of Epson Scara Drive For Novel Control
Štěpka, Jan
This work deals with the Epson SCARA manipulator drive. It is focused on creating a drive model and implementation position control of the permanent magnet synchronous motor to Servo Drive AX5000 from Beckhoff. This work describes measurements of drive parameters and, calculation of controler parameters for the fieldoriented control in d-q coordinate system and an actual solution of the position control with Beckhoff AX5000.
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Monitoring and Diagnosis Algorithms for Synchronous Motor Drives
Otava, Lukáš ; Glasberger, Tomáš (referee) ; Lettl, Jiří (referee) ; Václavek, Pavel (advisor)
Permanent magnet synchronous machine drives are used more often. Although, synchronous machines drive also suffer from possible faults. This thesis is focused on the detection of the three-phase synchronous motor winding faults and the detection of the drive control loop sensors' faults. Firstly, a model of the faulty winding of the motor is presented. Effects of the inter-turn short fault were analyzed. The model was experimentally verified by fault emulation on the test bench with an industrial synchronous motor. Inter-turn short fault detection algorithms are summarized. Three existing conventional winding fault methods based on signal processing of the stator voltage and stator current residuals were verified. Three new winding fault detection methods were developed by the author. These methods use a modified motor model and the extended Kalman filter state estimator. Practical implementation of the algorithms on a microcontroller is described and experimental results show the performance of the presented algorithms in different scenarios on test bench measurements. Highly related motor control loop sensors fault detection algorithms are also described. These algorithms are complementary to winding fault algorithms. The decision mechanism integrates outputs of sensor and winding fault detection algorithms and provides an overall drive fault diagnosis concept.
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Permanent Magnet Assisted Synchronous Reluctance Motor
Knebl, Ladislav
In these days, there is big emphasis put on electric motors efficiency, the best efficiency can be achieved with surface mounted permanent magnet (SMPM) motor. The SMPM motors efficiency may be even in cases of small machines, higher than 90%. Unfortunately this kind of motor is expensive, because neodymium magnets are used. The synchronous reluctance assisted motor (SRAM) topology is one of many possible machines that might in some cases replace the SMPM machines. Because cheap ferrite magnets are used and still similar characteristics can be achieved.
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Analysis of 1,1 MW permanent magnet synchronous motor
Homolová, Romana ; Cipín, Radoslav (referee) ; Vítek, Ondřej (advisor)
This thesis deals with the elaboration of The Permanent Magnet Synchronous Motor and the calculation of its parameters. In the first part, the construction and used permanent magnets of this motor are listed here. The next part of the thesis contains a short overview of the stator windings, the calculation of the winding factors and calculation of the basic parameters of the stator winding. The calculation of the magnetic induction in the air gap is also illustrated here. The result is recalculated by using the Carter factor and then the value of the first harmonics of air-gap flux density is determined. The result is compared with the analysis in the program FEMM. The next part of the thesis is creating a comprehensive overview of the machine using a replacement circuit diagram and phasor diagrams. Finally, the thesis contains model created in RMxprt and ANSYS Maxwell. The results of the model analysis are compared with the analytical calculation
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Synchronous motor speed control
Šatava, Patrik ; Mach, Martin (referee) ; Ondrůšek, Čestmír (advisor)
This bachelor’s thesis deals mainly with methods for control of synchronous motors for use in electrical drives. In the first part of the thesis the generic theory of a synchronous machine is presented. Furthermore, this part also deals with Park’s linear transformation of the synchronous machine’s equations, and the stability of the machine. Subsequently, methods for control of a permanent magnet synchronous motor for use in electrical drives are presented. Two major presented methods include the vector control and the direct torque control. Furthermore, the thesis deals shortly with scalar control, which is, however, used rarely nowadays. The last part of the thesis presents measured data of two permanent magnet synchronous motors, powered by a variable frequency AC drive. The data was measured at no load with use of three control methods – scalar control, vector control in open loop-mode, and vector control in closed-loop mode; and at load with use of two control methods – scalar control, and vector control in closed-loop mode.
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