EPE Association: EPE-PEMC 2004 - Topic 07-3: Converter-machine interactions

EPE-PEMC 2004 - Topic 07-3: Converter-machine interactions
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 07: MOTION CONTROL, ROBOTICS AND ADJUSTABLE SPEED DRIVES > EPE-PEMC 2004 - Topic 07-3: Converter-machine interactions

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   Control Of Swing-Up And Stabilization For An Inverted Pendulum
By Xiaodong Zhao, Li Chai, Rong Yang [View]
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Abstract: Modern control theory is now developed to provide an authentic design technique for synthesizing practical control systems. In particular, the lack of appropriated friction nonlinear model for the pendulum makes interesting the task of design a robust controller. In this paper, both design methods (LQR and H ‡ ) are illustrated by simulation with an inverted pendulum case. The differences of performance between these two methods are compared and investigated according to the simulation results. To find a "good" trade-off between the multi-objective specifications (mixed H2 and H ‡), an optimal multi-objective controller based on the LMI theory is designed. A strategy of energy control for swinging up a pendulum from its stable downward position to its upright position is illustrated at the end of this paper. The experimental result shows the whole successful procedure of swinging up a pendulum and balancing it at its steady-state upright position.

   Control Of Two Two-Level Voltage Rectifiers - Five Level NPC Voltage Source Inverter. Application To Induction Motor Drive.
By R. Guedouani, E. M. Berkouk, B. Fiala, M. S. Boucherit, M. Tebib, N. Belhadj [View]
[Download]

Abstract: The middle point voltage of the input DC voltages of the five-level NPC voltage source inverter presents serious problems caused by a fluctuation of the DC voltage sources Uc1, Uc2, Uc3, Uc4. As consequence to these problems, we obtain an output voltage inverter which is asymmetric and with average value different from zero. In this paper , we will present one solution to minimize this fluctuation. This solution uses two two-level voltage PWM rectifiers to supply the five-level NPC voltage source inverter with clamping bridge. As application of this cascade, we study the performances of the three phases induction machine fed by this association. This drive system can find applications in great power and high voltage fields as electrical traction.

   Experimental Determination Of Systemeigenfrequencies On Electrical Drives
By Roland Lach, Stefan Soter, Ralf Wegener [View]
[Download]

Abstract: The presented measuring method describes away to determine the resonance frequencies of a multimass system like an electrical drive. While the system is stimulated with a vibration exciter at one position, the acceleration is measured at other positions. The system eigenfrequencies and the deformation can be calculated from the core propagation movability.

   Improvement Of Torque And Flux Control In DTC Method
By Andrzej Sikorski, Marek Korzeniewski [View]
[Download]

Abstract: DTC method operation analysis to explain the flux and current distortion for the small speed of motor operation is discussed in the article. As results this observations the method DTC scheme modification is proposed. The modified DTC method is free from the conventional DTC method disadvantages. The dynamical properties of new method are similar to conventional DTC method. It is important that in the modified method the conventional switching table is used. Correctness of new method is confirmed by laboratory investigations.

   Modelling, Analysis & Designing Of Vector Control Of Fixed Frequency Current Controlled PI Controller For PWM Inverter - Fed Synchronous Motor Drive
By D. K. Trivedi, K. B. Khanchandani [View]
[Download]

Abstract: This paper describes the development of vector control of fixed frequency current controlled PWM inverter fed synchronous motor drive. The objective is to study the feasibility of the implemented scheme for the vector control of fixed frequency Current controlled PWM inverter fed selfcontrolled synchronous motor for unity power factor operation with high performance. A mathematical model and a digital control principal for controlling the synchronous motor are described. A systematic simulation in simulink is carried out for verifying the feasibility of theoretical modeling and controller design. An experimental prototype system is constructed for correlating with the theoretical results. The experimental results closely follow simulated results, thus validating the proposed control method.

   Robustness Of Currents Input-Output Decoupling In Vector Control Of A Doubly Fed Induction Machine
By Salloum Georges, Ghosn Ragi, Pietrzak-David Maria, De Fornel Bernard [View]
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Abstract: This paper deals with a Doubly Fed Induction Machine (DFIM) of which both stator and rotor are supplied by two voltage source inverters. A non-linear state-space representation of the DFIM with a new input-output current decoupling approach is presented. A vector control algorithm using a speed sensor is implemented. High dynamic performance is obtained for the currents, which allows also good dynamic performance for stator and rotor fluxes, torque and speed. It is also shown that the proposed control law is almost insensitive to the variations of the structural parameters of the machine.

   Rotor Flux Oriented Control Of Doubly Fed Induction Machine
By Sejir Khojet El Khil, Ilhem Slama-Belkhodja, Maria Pietrzak-David, Bernard De Fornel [View]
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Abstract: This paper presents a comparison between two algorithms of rotor flux oriented control of a doubly fed induction machine (DFIM) supplied by two voltages PWM inverters in stator and rotor. A power distribution between stator and rotor is considered. A mathematical model of the DFIM for the control strategy is defined in the rotor reference frame. The structure of each algorithm is presented. Simulation results under Matlab-Simulink illustrate the performances of each algorithm control and to compare them.

   The Preparation Of The Drive System Of The Virac Radio Telescope For The European VLBI Network Operation
By Bezrukov D., Bezrukov V., Bezrukov Vl. [View]
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Abstract: The significance and possibilities of including of the VIRAC radio telescope RT32 into the EVN are evaluated. The characteristic and evaluation of availability index and technical conditions of radio telescope motion drive hardware are given. The possibility of the drive reliability improvement and the energy consumption optimisation are reviewed. The possible project of the antenna motion drive and control system with an exploration of voltage converters is considered.

EPE-PEMC 2004 - Topic 07-3: Converter-machine interactions
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 07: MOTION CONTROL, ROBOTICS AND ADJUSTABLE SPEED DRIVES > EPE-PEMC 2004 - Topic 07-3: Converter-machine interactions
	[return to parent folder]

	Control Of Swing-Up And Stabilization For An Inverted Pendulum By Xiaodong Zhao, Li Chai, Rong Yang	[View] [Download]
Abstract: Modern control theory is now developed to provide an authentic design technique for synthesizing practical control systems. In particular, the lack of appropriated friction nonlinear model for the pendulum makes interesting the task of design a robust controller. In this paper, both design methods (LQR and H ‡ ) are illustrated by simulation with an inverted pendulum case. The differences of performance between these two methods are compared and investigated according to the simulation results. To find a "good" trade-off between the multi-objective specifications (mixed H2 and H ‡), an optimal multi-objective controller based on the LMI theory is designed. A strategy of energy control for swinging up a pendulum from its stable downward position to its upright position is illustrated at the end of this paper. The experimental result shows the whole successful procedure of swinging up a pendulum and balancing it at its steady-state upright position.

	Control Of Two Two-Level Voltage Rectifiers - Five Level NPC Voltage Source Inverter. Application To Induction Motor Drive. By R. Guedouani, E. M. Berkouk, B. Fiala, M. S. Boucherit, M. Tebib, N. Belhadj	[View] [Download]
Abstract: The middle point voltage of the input DC voltages of the five-level NPC voltage source inverter presents serious problems caused by a fluctuation of the DC voltage sources Uc1, Uc2, Uc3, Uc4. As consequence to these problems, we obtain an output voltage inverter which is asymmetric and with average value different from zero. In this paper , we will present one solution to minimize this fluctuation. This solution uses two two-level voltage PWM rectifiers to supply the five-level NPC voltage source inverter with clamping bridge. As application of this cascade, we study the performances of the three phases induction machine fed by this association. This drive system can find applications in great power and high voltage fields as electrical traction.

	Experimental Determination Of Systemeigenfrequencies On Electrical Drives By Roland Lach, Stefan Soter, Ralf Wegener	[View] [Download]
Abstract: The presented measuring method describes away to determine the resonance frequencies of a multimass system like an electrical drive. While the system is stimulated with a vibration exciter at one position, the acceleration is measured at other positions. The system eigenfrequencies and the deformation can be calculated from the core propagation movability.

	Improvement Of Torque And Flux Control In DTC Method By Andrzej Sikorski, Marek Korzeniewski	[View] [Download]
Abstract: DTC method operation analysis to explain the flux and current distortion for the small speed of motor operation is discussed in the article. As results this observations the method DTC scheme modification is proposed. The modified DTC method is free from the conventional DTC method disadvantages. The dynamical properties of new method are similar to conventional DTC method. It is important that in the modified method the conventional switching table is used. Correctness of new method is confirmed by laboratory investigations.

	Modelling, Analysis & Designing Of Vector Control Of Fixed Frequency Current Controlled PI Controller For PWM Inverter - Fed Synchronous Motor Drive By D. K. Trivedi, K. B. Khanchandani	[View] [Download]
Abstract: This paper describes the development of vector control of fixed frequency current controlled PWM inverter fed synchronous motor drive. The objective is to study the feasibility of the implemented scheme for the vector control of fixed frequency Current controlled PWM inverter fed selfcontrolled synchronous motor for unity power factor operation with high performance. A mathematical model and a digital control principal for controlling the synchronous motor are described. A systematic simulation in simulink is carried out for verifying the feasibility of theoretical modeling and controller design. An experimental prototype system is constructed for correlating with the theoretical results. The experimental results closely follow simulated results, thus validating the proposed control method.

	Robustness Of Currents Input-Output Decoupling In Vector Control Of A Doubly Fed Induction Machine By Salloum Georges, Ghosn Ragi, Pietrzak-David Maria, De Fornel Bernard	[View] [Download]
Abstract: This paper deals with a Doubly Fed Induction Machine (DFIM) of which both stator and rotor are supplied by two voltage source inverters. A non-linear state-space representation of the DFIM with a new input-output current decoupling approach is presented. A vector control algorithm using a speed sensor is implemented. High dynamic performance is obtained for the currents, which allows also good dynamic performance for stator and rotor fluxes, torque and speed. It is also shown that the proposed control law is almost insensitive to the variations of the structural parameters of the machine.

	Rotor Flux Oriented Control Of Doubly Fed Induction Machine By Sejir Khojet El Khil, Ilhem Slama-Belkhodja, Maria Pietrzak-David, Bernard De Fornel	[View] [Download]
Abstract: This paper presents a comparison between two algorithms of rotor flux oriented control of a doubly fed induction machine (DFIM) supplied by two voltages PWM inverters in stator and rotor. A power distribution between stator and rotor is considered. A mathematical model of the DFIM for the control strategy is defined in the rotor reference frame. The structure of each algorithm is presented. Simulation results under Matlab-Simulink illustrate the performances of each algorithm control and to compare them.

	The Preparation Of The Drive System Of The Virac Radio Telescope For The European VLBI Network Operation By Bezrukov D., Bezrukov V., Bezrukov Vl.	[View] [Download]
Abstract: The significance and possibilities of including of the VIRAC radio telescope RT32 into the EVN are evaluated. The characteristic and evaluation of availability index and technical conditions of radio telescope motion drive hardware are given. The possibility of the drive reliability improvement and the energy consumption optimisation are reviewed. The possible project of the antenna motion drive and control system with an exploration of voltage converters is considered.