EPE Association: Pelincec 2005 - 04: Predictive Control II

Pelincec 2005 - 04: Predictive Control II
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 04: Predictive Control II

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   Predictive Torque and Flux Control for the Synchronous Reluctance Machine
By Mario Pacas, R. Morales-Caporal [View]
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Abstract: This paper presents a predictive torque and flux control algorithm for the synchronous reluctance machine. The algorithm realizes a voltage space phasor pre-selection, followed by the computation of the switching instants for the optimum switching space phasors, with the advantages of inherently constant switching frequency and time equidistant implementation on a DSP based system. The criteria how to choose the appropriate voltage space phasor depend on the state of the machine and the deviations of torque and flux at the end of the cycle. The model of the machine has been developed on a d-q frame of coordinates attached to the rotor and takes into account the magnetic saturation in both d-q axes and the cross saturation phenomenon between both axes. Therefore, a very good approximation of this effect is achieved and the performance of the machine is improved. Several simulations and experimental results using a DSP and a commercially available machine show the validity of the proposed control scheme.

   Predictive Strategies for Power Electronic Circuits
By Dierk Schroeder [View]
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Abstract: We will discuss in this paper predictive current control strategies for power electronic circuits with natural commutations, for voltage source - and current source - inverters. Due to the different behavior of these circuits we habe to realize different strategies, but the generell objective is to achieve the best dynamic behavior of the current control loop, independent of whether the current is continuous or discontinuous.

   DIRECT TORQUE AND FLUX CONTROL OF INDUCTION MOTOR DRIVE
By Andrzej Sikorski, Marek Korzeniewski [View]
[Download]

Abstract: The new method of direct torque and flux of AC motor control is presented in the article. this method is characterized by the lack of disadvantages of the DTC method with low motor speed. Additionally the proposed method enables the minimization of the torque pulsation and inverter transistors switching frequency. The method advantages were proved by laboratory tests of drive system.

   Sensorless Speed Control including zero speed of Non Salient PM Synchronous Drives
By Henrik Rasmussen [View]
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Abstract: This paper presents a position sensorless drive of non salient pole PMsynchronous motors for all speed 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 800W motor.

Pelincec 2005 - 04: Predictive Control II
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 04: Predictive Control II
	[return to parent folder]

	Predictive Torque and Flux Control for the Synchronous Reluctance Machine By Mario Pacas, R. Morales-Caporal	[View] [Download]
Abstract: This paper presents a predictive torque and flux control algorithm for the synchronous reluctance machine. The algorithm realizes a voltage space phasor pre-selection, followed by the computation of the switching instants for the optimum switching space phasors, with the advantages of inherently constant switching frequency and time equidistant implementation on a DSP based system. The criteria how to choose the appropriate voltage space phasor depend on the state of the machine and the deviations of torque and flux at the end of the cycle. The model of the machine has been developed on a d-q frame of coordinates attached to the rotor and takes into account the magnetic saturation in both d-q axes and the cross saturation phenomenon between both axes. Therefore, a very good approximation of this effect is achieved and the performance of the machine is improved. Several simulations and experimental results using a DSP and a commercially available machine show the validity of the proposed control scheme.

	Predictive Strategies for Power Electronic Circuits By Dierk Schroeder	[View] [Download]
Abstract: We will discuss in this paper predictive current control strategies for power electronic circuits with natural commutations, for voltage source - and current source - inverters. Due to the different behavior of these circuits we habe to realize different strategies, but the generell objective is to achieve the best dynamic behavior of the current control loop, independent of whether the current is continuous or discontinuous.

	DIRECT TORQUE AND FLUX CONTROL OF INDUCTION MOTOR DRIVE By Andrzej Sikorski, Marek Korzeniewski	[View] [Download]
Abstract: The new method of direct torque and flux of AC motor control is presented in the article. this method is characterized by the lack of disadvantages of the DTC method with low motor speed. Additionally the proposed method enables the minimization of the torque pulsation and inverter transistors switching frequency. The method advantages were proved by laboratory tests of drive system.

	Sensorless Speed Control including zero speed of Non Salient PM Synchronous Drives By Henrik Rasmussen	[View] [Download]
Abstract: This paper presents a position sensorless drive of non salient pole PMsynchronous motors for all speed 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 800W motor.