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Trakční pohon elektrokola s motorem Heinzmann
Němec, Petr ; Huták, Petr (oponent) ; Vorel, Pavel (vedoucí práce)
Tato práce je zaměřena na návrh a konstrukci DC/DC měniče pro řízení motoru Heinzmann. Měnič společně s motorem bude tvořit elektrický pohon jízdního kola. Návrh DC/DC měniče je koncipován na takový výkon motoru, aby při jízdě nebyl nutný pohon lidskou silou, tedy šlapáním. Práce obsahuje informace o použitém motoru, postup návrhu a dimenzování DC/DC měniče, podrobné schéma zapojení a také princip funkce celého pohonu.
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Řídicí modul BLDC motoru
Morávek, Lukáš ; Cipín, Radoslav (oponent) ; Procházka, Petr (vedoucí práce)
Diplomová práca sa zaoberá návrhom a realizáciou hardvéru a softvéru pre riadenie a reguláciu vysokootáčkového pohonu s BLDC motorom, ktorý bude slúžiť ako vreteno pre CNC frézovačku. V práci je podrobne popísaný návrh schémy zapojenia a dosky plošných spojov silovej časti, riadiacej časti a napájacej časti trojfázového tranzistorového meniča riadeného DSP procesorom. Taktiež je podrobne popísaný program DSP procesora pre riadenie a reguláciu BLDC motora, ktorého funkcia je overovaná pomocou finálnych meraní. Výsledkom diplomovej práce je funkčný vysokootáčkový pohon s BLDC motorom.
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Fault-Tolerant Control of a Flux-switching Permanent Magnet Synchronous Machine
Aboelhassan, Mustafa Osman Elrayah ; Singule, Vladislav (oponent) ; Skala, Bohumil (oponent) ; Skalický, Jiří (vedoucí práce)
It has become clear that the most successful design approach involves a multiple phase drive in which each phase may be regarded as a single-module. The operation of any one module must have minimal impact upon the others, so that in the event of that module failing the others can continue to operate unaffected. The modular approach requires that there should be minimal electrical, magnetic and thermal interaction between phases of the drive. Flux-Switching permanent magnet synchronous machines (FS-PMSM) have recently emerged as an attractive machine type virtue of their high torque densities, simple and robust rotor structure and the fact that permanent magnets and coils are both located on the stator. Flux-switching permanent magnet (FS-PMSM) synchronous machines are a relatively new topology of stator PM brushless machine. They exhibit attractive merits including the large torque capability and high torque (power) density, essentially sinusoidal back-EMF waveforms, as well as having a compact and robust structure due to both the location of magnets and armature windings in the stator instead of the rotor as those in the conventional rotor-PM machines. The comparative results between a FS-PMSM and a traditional surface-mounted PM (SPM) motor having the same specifications reveal that FS-PMSM exhibits larger air-gap flux density, higher torque per copper loss, but also a higher torque ripple due to cogging -torque. However, for solely permanent magnets excited machines, it is a traditional contradiction between the requests of high torque capability under the base-speed (constant torque region) and wide speed operation above the base speed (constant power region) especially for hybrid vehicle applications. A novel fault-tolerant FS-PMSM drive topology is presented, which is able to operate during open- and short-circuit winding and converter faults. The scheme is based on a dual winding motor supplied from two separate vector-controlled voltage-sourced inverter drives. The windings are arranged in a way so as to form two independent and isolated sets. Simulation and experimental work will detail the driver’s performance during both healthy- and faulty- scenarios including short-circuit faults and will show the drive robustness to operate in these conditions. The work has been published in ten conference papers, two journal papers and a book chapter, presenting both the topology of the drive and the applied control schemes, as well as analysing the fault-tolerant capabilities of the drive.
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Řídicí modul BLDC motoru
Morávek, Lukáš ; Cipín, Radoslav (oponent) ; Procházka, Petr (vedoucí práce)
Diplomová práca sa zaoberá návrhom a realizáciou hardvéru a softvéru pre riadenie a reguláciu vysokootáčkového pohonu s BLDC motorom, ktorý bude slúžiť ako vreteno pre CNC frézovačku. V práci je podrobne popísaný návrh schémy zapojenia a dosky plošných spojov silovej časti, riadiacej časti a napájacej časti trojfázového tranzistorového meniča riadeného DSP procesorom. Taktiež je podrobne popísaný program DSP procesora pre riadenie a reguláciu BLDC motora, ktorého funkcia je overovaná pomocou finálnych meraní. Výsledkom diplomovej práce je funkčný vysokootáčkový pohon s BLDC motorom.
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Fault-Tolerant Control of a Flux-switching Permanent Magnet Synchronous Machine
Aboelhassan, Mustafa Osman Elrayah ; Singule, Vladislav (oponent) ; Skala, Bohumil (oponent) ; Skalický, Jiří (vedoucí práce)
It has become clear that the most successful design approach involves a multiple phase drive in which each phase may be regarded as a single-module. The operation of any one module must have minimal impact upon the others, so that in the event of that module failing the others can continue to operate unaffected. The modular approach requires that there should be minimal electrical, magnetic and thermal interaction between phases of the drive. Flux-Switching permanent magnet synchronous machines (FS-PMSM) have recently emerged as an attractive machine type virtue of their high torque densities, simple and robust rotor structure and the fact that permanent magnets and coils are both located on the stator. Flux-switching permanent magnet (FS-PMSM) synchronous machines are a relatively new topology of stator PM brushless machine. They exhibit attractive merits including the large torque capability and high torque (power) density, essentially sinusoidal back-EMF waveforms, as well as having a compact and robust structure due to both the location of magnets and armature windings in the stator instead of the rotor as those in the conventional rotor-PM machines. The comparative results between a FS-PMSM and a traditional surface-mounted PM (SPM) motor having the same specifications reveal that FS-PMSM exhibits larger air-gap flux density, higher torque per copper loss, but also a higher torque ripple due to cogging -torque. However, for solely permanent magnets excited machines, it is a traditional contradiction between the requests of high torque capability under the base-speed (constant torque region) and wide speed operation above the base speed (constant power region) especially for hybrid vehicle applications. A novel fault-tolerant FS-PMSM drive topology is presented, which is able to operate during open- and short-circuit winding and converter faults. The scheme is based on a dual winding motor supplied from two separate vector-controlled voltage-sourced inverter drives. The windings are arranged in a way so as to form two independent and isolated sets. Simulation and experimental work will detail the driver’s performance during both healthy- and faulty- scenarios including short-circuit faults and will show the drive robustness to operate in these conditions. The work has been published in ten conference papers, two journal papers and a book chapter, presenting both the topology of the drive and the applied control schemes, as well as analysing the fault-tolerant capabilities of the drive.
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Trakční pohon elektrokola s motorem Heinzmann
Němec, Petr ; Huták, Petr (oponent) ; Vorel, Pavel (vedoucí práce)
Tato práce je zaměřena na návrh a konstrukci DC/DC měniče pro řízení motoru Heinzmann. Měnič společně s motorem bude tvořit elektrický pohon jízdního kola. Návrh DC/DC měniče je koncipován na takový výkon motoru, aby při jízdě nebyl nutný pohon lidskou silou, tedy šlapáním. Práce obsahuje informace o použitém motoru, postup návrhu a dimenzování DC/DC měniče, podrobné schéma zapojení a také princip funkce celého pohonu.
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Control Strategy of Grid Connected Converter under Unbalanced Conditions
Lettl, J. ; Bejvl, Martin ; Valouch, Viktor
Current-controlled voltage source converters are widely used in grid-connected applications. The negative sequence component of the grid voltage causes pulsating components in powers transmitted through the converterand ripple of the dc voltage in the intermediate circuit. Two strategies of the current reference calculation for a dual current controller were developed and tested in the Matlab/Simulink environment and experimentally verified as well.
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