EPE Association: EPE 1995 - 19 - Lecture Session L5c: INDUSTRIAL DRIVES

EPE 1995 - 19 - Lecture Session L5c: INDUSTRIAL DRIVES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1995 - Conference > EPE 1995 - 19 - Lecture Session L5c: INDUSTRIAL DRIVES

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   REAL-TIME DSP IMPLEMENTATION OF AN EXTENDED OBSERVER IN A HIGH-DYNAMIC PERFORMANCE INDUCTION MOTOR DRIVE
By T. Du; P. Vas; A. F. Stronach [View]
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Abstract: The paper presents results for the on-line real-time implementation of an extended Luenberger observer for joint speed and rotor-flux estimation in a TMS320C30-DSP-based vector-controlled induction motor drive. The deterministic ELO is shown to be a feasible solution for real-time implementations in industrial drive systems. The simple algorithm and the ease of tuning of the observer gives advantages over the conventional extended Kalman filter. A detailed discussion of the development of a rea1 time system in both hardware and software is presented. ln order to demonstrate the satisfactory behaviour of the system, test results are given for the system incorporating the ELO for the cases of speed reversais and load disturbances.

   CIRCUIT-ORIENTED MODELS OF AC MACHINES FOR CONVERTER - MACHINE SYSTEMS SIMULATION
By M. Ronkowski; R. Szczesny [View]
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Abstract: A novel circuit-oriented ac machine models in terms of multi-port dynamic networks have been presented. The proposed models exhibit dynamic networks with the same number of external terminals as the real machines. Due to this feature they can be directly interfaced with any. converter circuit topology. Other important feature is that implementation of absolutely stable numerical integration algorithm and numerical model of saturation effects, in the main and leakage magnetic paths as well, are effectively taken into account. In particular, these models eliminate a general difficulty encountered in the automatic formulation of the conventional two-axis machine model terminal-constraints, imposed by the operations of converter-machine setups at normal and/or fault modes. As an illustrative example, to demonstrate the capabilities of the elaborated models, a laboratory induction motor drive system with a square-wave VSI in the stator and an industrial induction motor drive system with converter cascade in the rotor have been simulated and the results experimentally verified on the field.

   HIGH POWER ADJUSTABLE SPEED DRIVE FOR POWER PLANT: CURRENT SOURCE STRUCTURE WITH THYRISTORS FOR INDUCTION MACHINE
By Jürg Sprecher; Alain David; Maxime Dessoude [View]
[Download]

Abstract: This paper gives an analysis of the well known current source induction motor speed drive for high power applications, which has some resonance risk at low speed. This resonance phenomena is deeply analyzed, and the lower speed limit is given depending on the different parameters of the structure (capacitor bank, dc link inductance, load torque, motor parameters, converter control, ... ).

   INDUCTION MOTOR DRIVE FOR MINE LOCOMOTIVES
By M. Schroedl; A. Trenner; C. Berger [View]
[Download]

Abstract: A new compact drive based on state-of-the-art IGBT technology is presented. Control of the 600 V /400 A modules is performed by a single digital signal processor. Due to the calculating power of the processor, most functions including fast current control are realized in software, thus minimizing the hardware costs. The inverter supports a three phase maintenance-free induction motor. The paper describes the application of the drive system to mine locomotives. Practical experiences at several locomotives show the excellent properties and the robustness of the new drive.

EPE 1995 - 19 - Lecture Session L5c: INDUSTRIAL DRIVES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1995 - Conference > EPE 1995 - 19 - Lecture Session L5c: INDUSTRIAL DRIVES
	[return to parent folder]

	REAL-TIME DSP IMPLEMENTATION OF AN EXTENDED OBSERVER IN A HIGH-DYNAMIC PERFORMANCE INDUCTION MOTOR DRIVE By T. Du; P. Vas; A. F. Stronach	[View] [Download]
Abstract: The paper presents results for the on-line real-time implementation of an extended Luenberger observer for joint speed and rotor-flux estimation in a TMS320C30-DSP-based vector-controlled induction motor drive. The deterministic ELO is shown to be a feasible solution for real-time implementations in industrial drive systems. The simple algorithm and the ease of tuning of the observer gives advantages over the conventional extended Kalman filter. A detailed discussion of the development of a rea1 time system in both hardware and software is presented. ln order to demonstrate the satisfactory behaviour of the system, test results are given for the system incorporating the ELO for the cases of speed reversais and load disturbances.

	CIRCUIT-ORIENTED MODELS OF AC MACHINES FOR CONVERTER - MACHINE SYSTEMS SIMULATION By M. Ronkowski; R. Szczesny	[View] [Download]
Abstract: A novel circuit-oriented ac machine models in terms of multi-port dynamic networks have been presented. The proposed models exhibit dynamic networks with the same number of external terminals as the real machines. Due to this feature they can be directly interfaced with any. converter circuit topology. Other important feature is that implementation of absolutely stable numerical integration algorithm and numerical model of saturation effects, in the main and leakage magnetic paths as well, are effectively taken into account. In particular, these models eliminate a general difficulty encountered in the automatic formulation of the conventional two-axis machine model terminal-constraints, imposed by the operations of converter-machine setups at normal and/or fault modes. As an illustrative example, to demonstrate the capabilities of the elaborated models, a laboratory induction motor drive system with a square-wave VSI in the stator and an industrial induction motor drive system with converter cascade in the rotor have been simulated and the results experimentally verified on the field.

	HIGH POWER ADJUSTABLE SPEED DRIVE FOR POWER PLANT: CURRENT SOURCE STRUCTURE WITH THYRISTORS FOR INDUCTION MACHINE By Jürg Sprecher; Alain David; Maxime Dessoude	[View] [Download]
Abstract: This paper gives an analysis of the well known current source induction motor speed drive for high power applications, which has some resonance risk at low speed. This resonance phenomena is deeply analyzed, and the lower speed limit is given depending on the different parameters of the structure (capacitor bank, dc link inductance, load torque, motor parameters, converter control, ... ).

	INDUCTION MOTOR DRIVE FOR MINE LOCOMOTIVES By M. Schroedl; A. Trenner; C. Berger	[View] [Download]
Abstract: A new compact drive based on state-of-the-art IGBT technology is presented. Control of the 600 V /400 A modules is performed by a single digital signal processor. Due to the calculating power of the processor, most functions including fast current control are realized in software, thus minimizing the hardware costs. The inverter supports a three phase maintenance-free induction motor. The paper describes the application of the drive system to mine locomotives. Practical experiences at several locomotives show the excellent properties and the robustness of the new drive.