EPE Association: EPE 1999 - Topic 09f: Generator Excitation Systems

EPE 1999 - Topic 09f: Generator Excitation Systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 09: POWER ELECTRONICS IN GENERATION, TRANSMISSION AND DISTRIBUTION > EPE 1999 - Topic 09f: Generator Excitation Systems

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   A Study of the Performance of Detailed and Simplified Models of IEEE Standard DC1A Excitation Control System
By S. Rangnekar; R. B. Ghodgoankar; K. K. Patel [View]
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Abstract: Small signal stability of the Excitation Control System (ECS) DC1A with Single Machine Connected to Infinite Bus (SMIB) has been studied with detailed and simplified representations of ECS in state space form. Time responses derived using MATLAB-SIMULINK software package through specially developed programmes show the necessity to represent the ECS in full and close to the practical implimentations for accurate and reliable results. Significant parameters of the ECS could also be identified from these studies. A methodology has been developed to derive the optimum parameters for the ECS through a detailed study of its performance with a wide variation of parameters.

   Control Strategies of a Variable Speed PWM Excited Induction Generator
By R. Pena; L. Diz; R. Blasco-Giménez [View]
[Download]

Abstract: Controol strategies of a variable speed induction generator supplying a DC bus bar are presented. A three-phase voltage-source current-regulated PWM inverter is used to provide the excitation for the induction generator. Indirect vector controll technique is used to control the currents in the machine, using a two-axis (d, q) rotating frame aligned with the motor flux vector. The torque component q-axis current is used to regulate the DC link voltage whereas the d-axis current is used to keep the flux in the machine constant. Given the non-linear plant characteristic, two DC-link voltage controllers are proposed, namely a PI-type fuzzy logic controller and a classical PI controller with feed-forward compensation or load compensation. Simulation results showing the performance of both controllers are presented for load impacts and variable speed operation. It is shown that a classical PI controller with feed-forward compensation performs as good as the fuzzy controller.

EPE 1999 - Topic 09f: Generator Excitation Systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 09: POWER ELECTRONICS IN GENERATION, TRANSMISSION AND DISTRIBUTION > EPE 1999 - Topic 09f: Generator Excitation Systems
	[return to parent folder]

	A Study of the Performance of Detailed and Simplified Models of IEEE Standard DC1A Excitation Control System By S. Rangnekar; R. B. Ghodgoankar; K. K. Patel	[View] [Download]
Abstract: Small signal stability of the Excitation Control System (ECS) DC1A with Single Machine Connected to Infinite Bus (SMIB) has been studied with detailed and simplified representations of ECS in state space form. Time responses derived using MATLAB-SIMULINK software package through specially developed programmes show the necessity to represent the ECS in full and close to the practical implimentations for accurate and reliable results. Significant parameters of the ECS could also be identified from these studies. A methodology has been developed to derive the optimum parameters for the ECS through a detailed study of its performance with a wide variation of parameters.

	Control Strategies of a Variable Speed PWM Excited Induction Generator By R. Pena; L. Diz; R. Blasco-Giménez	[View] [Download]
Abstract: Controol strategies of a variable speed induction generator supplying a DC bus bar are presented. A three-phase voltage-source current-regulated PWM inverter is used to provide the excitation for the induction generator. Indirect vector controll technique is used to control the currents in the machine, using a two-axis (d, q) rotating frame aligned with the motor flux vector. The torque component q-axis current is used to regulate the DC link voltage whereas the d-axis current is used to keep the flux in the machine constant. Given the non-linear plant characteristic, two DC-link voltage controllers are proposed, namely a PI-type fuzzy logic controller and a classical PI controller with feed-forward compensation or load compensation. Simulation results showing the performance of both controllers are presented for load impacts and variable speed operation. It is shown that a classical PI controller with feed-forward compensation performs as good as the fuzzy controller.