National Repository of Grey Literature 6 records found  Search took 0.00 seconds. 
Novel Methods of Sensorless Control of Drives with PMSM Motor
Lepka, Jaroslav ; Klíma, Bohumil (referee) ; Lettl,, Jiří (referee) ; Václavek, Pavel (advisor)
Purpose of this dissertation is to explore control techniques of PMSM motors and the design of a complex solution of sensorless control across a wide range of speed and torque. The proposed solution supports industrial implementation of different types of end equipment which use a PMSM motor. The work covers a thorough analysis of position and speed estimation. The Control structure is based on field oriented control technique, processes estimated quantities, and optimizes motor conditions to achieve maximum efficiency, start-up torque, and speed. The work discusses how the solution complies with the latest IEC standards. Compliance with these standards requires adapting the sensorless control technique and field oriented control structure. The elimination of a rotor position sensor and a temperature sensor measuring winding temperature requires development of techniques in software for blocked rotor detection and overload detection. The proposed solutions, which have been granted US patents, are explained in this work and utilize the unique features of an NXP microcontroller optimized for motor control applications. The achieved results are demonstrated on real industrial applications.
Energy Efficient Control of Drives with Synchronous Machines
Szymanik, Marek ; Kozubík, Michal (referee) ; Václavek, Pavel (advisor)
The paper presents a mathematical description of a permanent magnet synchronous moto including losses and its vector control. The paper compares the control of the d component of the current to zero with the control using loss optimization and the efficiency under the given control is compared. The simulation is performed on two variants of the PMSM.
HIGH POWER-EFFICIENT SENSORLESS CONTROL OF SYNCHRONOUS RELUCTANCE MOTOR
Mynář, Zbyněk ; Talla,, Jakub (referee) ; Lettl, Jiří (referee) ; Václavek, Pavel (advisor)
Synchronní reluktanční motory se pro svou relativně vysokou účinnost, robustnost a nízkou cenu stávají stále populárnější alternativou velmi rozšířených asynchronních motorů. Snaha o využití výhodných vlastností bezsnímačového řízení, a dosažení co nejvyšší účinnost jejich provozu, je však komplikována jejich výraznou nelinearitou způsobenou saturací magnetického obvodu. Úvod této práce je věnován popisu matematicko-fyzikálního modelu SynRM a přehledu existujících moderních algoritmů výkonově-optimálního bezsnímačového řízení. Jádrem práce je pak představení estimátoru stavů a parameterů SynRM postaveného na novém přístupu k měření a využití fázových reluktancí. Klíčovými prvky algoritmu jsou nová metodologie měření fázových reluktancí, spínací PWM schéma jež umožňuje snížit spínací ztráty a měřit fázové reluktance od nulových otáček, a nakonec integrace těchto měření s matematickým modelem SynRM s pomocí rozšířeného Kalmánova filtru. Experimentální část práce pak diskutuje výsledky reálných měření s navrženým algoritmem a vybranými současnými algoritmy.
Energy Efficient Control of Drives with Synchronous Machines
Szymanik, Marek ; Kozubík, Michal (referee) ; Václavek, Pavel (advisor)
The paper presents a mathematical description of a permanent magnet synchronous moto including losses and its vector control. The paper compares the control of the d component of the current to zero with the control using loss optimization and the efficiency under the given control is compared. The simulation is performed on two variants of the PMSM.
Power Optimized Control of Synchronous Reluctance Machine
Mynář, Zbyněk
Synchronous reluctance motor (SynRM) is becoming more and more popular alternative of AC induction motor (ACIM) for its low cost, rugged structure and possibility of higher power efficiency. Power optimized control of SynRM is, therefore, important topics of research. This paper proposes power optimizing control algorithm incorporating active search of optimal current angle according to the MTPA criterion using the DC current injection. Results of implementation on real machine are presented.
Novel Methods of Sensorless Control of Drives with PMSM Motor
Lepka, Jaroslav ; Klíma, Bohumil (referee) ; Lettl,, Jiří (referee) ; Václavek, Pavel (advisor)
Purpose of this dissertation is to explore control techniques of PMSM motors and the design of a complex solution of sensorless control across a wide range of speed and torque. The proposed solution supports industrial implementation of different types of end equipment which use a PMSM motor. The work covers a thorough analysis of position and speed estimation. The Control structure is based on field oriented control technique, processes estimated quantities, and optimizes motor conditions to achieve maximum efficiency, start-up torque, and speed. The work discusses how the solution complies with the latest IEC standards. Compliance with these standards requires adapting the sensorless control technique and field oriented control structure. The elimination of a rotor position sensor and a temperature sensor measuring winding temperature requires development of techniques in software for blocked rotor detection and overload detection. The proposed solutions, which have been granted US patents, are explained in this work and utilize the unique features of an NXP microcontroller optimized for motor control applications. The achieved results are demonstrated on real industrial applications.

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