Wyniki wyszukiwania - BazTech

1

Experimental verification of Dead-Beat predictive current controller for small power, low speed PMSM

Pałka R., Piotuch R.

Archives of Electrical Engineering

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2018

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Vol. 67, nr 2

333–-343

EN

This paper presents simulation and experimental results obtained with a Dead- Beat predictive current controller for a Permanent Magnet Synchronous Machine (PMSM) drive system. With means of combined field and circuit simulations, an efficiency map and required current in a direct- and quadrature-axis are defined. A control algorithm was implemented within an open-interface inverter from Texas Instruments. Dynamic response for both axis currents was defined and verified as well as current ripples for different set currents in the quadrature axis.

2

Magnetic Field and Torque in Permanent Magnet Slot-Less Brushless Motor with Twin Cylindrical Rotor

Wojciechowski R., Mendrela E., Demenko A.

Przegląd Elektrotechniczny

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2009

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R. 85, nr 12

246-251

EN

A radial-flux twin-rotor brushless permanent magnet motor is presented. The slot-less cylindrical stator core has 3-phase Gramme’s type winding. A double-sided stator is placed between two cylindrical rotors with permanent magnets, which face the stator winding. To determine the electromagnetic torque and back electromagnetic force induced in the winding a magnetic field is analyzed in 3D space using software developed by the authors. This software is based on edge element method. An influence of permanent magnet configuration on inductance and torque waveforms is studied.

PL

W artykule przedstawiono budowę oraz zaprezentowano wybrane wyniki obliczeń projektowych bezszczotkowego silnika z magnesami trwałymi posiadającego dwustronny cylindryczny stojan z uzwojeniem typu Gramme oraz podwójny wirnik. Obliczenia wykonano metodą elementów krawędziowych. Dla silnika o określonych parametrach konstrukcyjnych wyznaczono przestrzenne rozkłady pola magnetycznego, parametry schematu zastępczego, charakterystyki momentu elektromagnetycznego oraz siły elektromotorycznej. Ponadto zbadano wpływ zmiany parametrów magnesów na indukcyjności oraz moment elektromagnetyczny.

3

Sensorless speed control including zero speed of non salient PM synchronous drives

Rasmussen H.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2006

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Vol. 54, nr 3

293-298

EN

This paper presents a position sensorless drive of non salient pole PM synchronous motors for all speeds including zero speed. Using adaptive Lyapunov design a new approach for the design of an observer is developed. The resulting scheme leads to a nonlinear full order observer for the motor states including the rotor speed. Assuming motor parameters known the design achieves stability with guaranteed region of attraction even at zero speed. The control method is made robust at zero and low speed by changing the direct vector current component to a value different from zero. In order to verify the applicability of the method the controller has been implemented and tested on a 800 W motor.