EPE Association: EPE 2003 - Topic 13a: Energy System Management, User Applications Experiences, Modelling and Simulation

EPE 2003 - Topic 13a: Energy System Management, User Applications Experiences, Modelling and Simulation
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2003 - Conference > EPE 2003 - Topic 13: SYSTEMS ENGINEERING > EPE 2003 - Topic 13a: Energy System Management, User Applications Experiences, Modelling and Simulation

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   Ancillary services in market environment
By G. Blajszczak [View]
[Download]

Abstract: The paper presents the place of power electronics in ancillary services for utility power grid. Different types of ancillary services are discussed. New European regulations encourage free trading of theses services on internal and international markets. The power grid of Poland (a part of the European UCTE system) have a boarder and transmission lines with systems of Ukraine, Byelorussia and Russia. This make a good possibility for energy and grid ancillary services transfer from East to West. Besides that, hardware, technical abilities, operation strategy, economy, cost and prices are also discussed. Speculations for farther development in competitive market are provided.

   Analysis of inductive energy transmission systems with large air gap at high frequencies
By R. Mecke; C. Rathge; W. Fischer; B. Andonovski [View]
[Download]

Abstract: Inductive energy transmission through a large air gap is becoming more and more attractive especially for automatic battery charging stations and for energy supply of inductively powered electric vehicles and other movable consumers. The paper investigates the influence of geometrical and electrical parameters on energy transmission through air gaps of several hundred millimetres. The investigations are carried out by means of magnetic flux simulation and measurements. In particular the dimensions of the primary and secondary system, the existence of ferrite cores on the primary or secondary side and the air gap length determine the transmission behaviour. The transferable electric power and the efficiency of magnetic assemblies with large air gaps can be considerably improved by using higher transmission frequencies in the range of approximately 100 kHz. An experimental arrangement transfers an electric power of 1 kW through an air gap of 300 mm. At a 100 kHz transmission frequency the overall efficiency, including all power electronic components, is greater than 80 %.

   Evolutionary electrical model of homogeneous discharge
By N. Naudé; J-P. Cambronne; N. Gherardi; F. Massines [View]
[Download]

Abstract: The aim of this paper is the modelling of dielectric barrier discharge at atmospheric pressure, in the homogeneous regime. This PSpice model is based on an equivalent electrical circuit. It takes into account the main physical phenomena and the evolution of the discharge static characteristic. This model permits to have a general view of the process and to study the influence of the power supply on the discharge. It is also an interesting tool for the power supply design and the process optimization.

   Design of an electromechanical portable system using human body movement for electricity generation
By S. Turri; D. Miller; H. Ben Ahmed; B. Multon [View]
[Download]

Abstract: In this article, the authors present the energy potential associated with an electromechanical resonant generator that uses natural movements of the human body during walking motion, as a means of increasing the autonomy of portable electronic systems. The article begins by characterizing the human walk in terms of frequency and hip displacement amplitude. A combined mechanical and electrical study is then conducted in order to determine an order of magnitude for recoverable power.

   Integrated engineering system for converter-driven rail vehicles: a case study
By W. Egli; T. Keller [View]
[Download]

Abstract: The traction chain of modern electric rail vehicles consist of high performance converters which transform the catenary voltage and frequency in variable voltages and frequencies for the traction motor. The design and simulation of such a complex traction chain is demanding. On the one hand many technical constraints must be considered and satisfied, on the other hand data flows between participating design departments must be provided that ensure a sound concurrent engineering process. Both, the technical as well as the procedural challenge, ask for an integrated engineering system that provides the required design and simulation tools and ensures and supports data flows. This paper presents in the first part INTENS™ [1], which provides the integrated engineering system, and in the second part a case study of Bombardier Transportation, where INTENS™ is deployed.

   Electromechanical power converter systems for 5 MW-off-shore wind energy converters
By C. Sourkounis; H-P. Beck [View]
[Download]

Abstract: With the increasing nominal power of the plants and the cumulated wind park power, interest in the operating behaviour of the plants and finally of the wind park is developing. Main criteria for the quality of the operating behaviour is based on mains pollution (e.g. harmonics) caused by the wind energy converter itself and by the power fluctuation through the variations in the wind speed. The dynamic and stationary operating behaviour of wind energy converters is on the one hand defined by the structure of the drive train, and on the other hand by the control algorithm. The essence of this paper is the investigation of the operating behaviour of different concepts of wind energy converters in relation to different control algorithms. From the theoretical perspective, several different concepts with synchronous and asynchronous machines combined with low- and medium-voltage converters for variable speed generation are possible. Because of the experiences so far, there are, in practice, only a few concepts suitable for electrical part design. Therefore, in the presented paper, a theoretical and simulated based comparison will be carried out. Five different concepts (some state-of-the-art and some new creations especially for off-shore use) therefore, are compared in relation to necessary requirements.

   The intermediate prototype of the compressor drive for a fuel cell power system
By K.O. Boinov; E.A. Lomonova; A.J.A. Vandenput [View]
[Download]

Abstract: The paper summarises several initial steps of configuration and analysis of the system with an air compressor and an electrical drive for the application in a fuel cell (FC) power system (power level is 250 kW). The preliminary FC system configuration procedure with respect to the compression system is reviewed. The dynamic mathematical model of the centrifugal compressor is presented. The preliminary selection of the high-speed induction motor and its parametric optimisation are done by means of design assistant program RMxprt (Ansoft Co.). The performance characteristics of the induction motor are obtained and evaluated for the different compressor system operation points. The transient analysis of the motor is accomplished in the finite element package Maxwell 2D (Ansoft Co). All predictions are validated against the benchmark motor.

   Virtual machinery of the cruise ship C32
By R. Besrest; R. Pauly; J.Y. Renaud [View]
[Download]

Abstract: This paper presents the design methodology and the results of a virtual machinery tool dedicated to transient analysis of All Electric Ship power networks. The dynamic performance study of an existing machinery has shown the great interest of such a tool in power electronics applications and energy system management.

EPE 2003 - Topic 13a: Energy System Management, User Applications Experiences, Modelling and Simulation
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2003 - Conference > EPE 2003 - Topic 13: SYSTEMS ENGINEERING > EPE 2003 - Topic 13a: Energy System Management, User Applications Experiences, Modelling and Simulation
	[return to parent folder]

	Ancillary services in market environment By G. Blajszczak	[View] [Download]
Abstract: The paper presents the place of power electronics in ancillary services for utility power grid. Different types of ancillary services are discussed. New European regulations encourage free trading of theses services on internal and international markets. The power grid of Poland (a part of the European UCTE system) have a boarder and transmission lines with systems of Ukraine, Byelorussia and Russia. This make a good possibility for energy and grid ancillary services transfer from East to West. Besides that, hardware, technical abilities, operation strategy, economy, cost and prices are also discussed. Speculations for farther development in competitive market are provided.

	Analysis of inductive energy transmission systems with large air gap at high frequencies By R. Mecke; C. Rathge; W. Fischer; B. Andonovski	[View] [Download]
Abstract: Inductive energy transmission through a large air gap is becoming more and more attractive especially for automatic battery charging stations and for energy supply of inductively powered electric vehicles and other movable consumers. The paper investigates the influence of geometrical and electrical parameters on energy transmission through air gaps of several hundred millimetres. The investigations are carried out by means of magnetic flux simulation and measurements. In particular the dimensions of the primary and secondary system, the existence of ferrite cores on the primary or secondary side and the air gap length determine the transmission behaviour. The transferable electric power and the efficiency of magnetic assemblies with large air gaps can be considerably improved by using higher transmission frequencies in the range of approximately 100 kHz. An experimental arrangement transfers an electric power of 1 kW through an air gap of 300 mm. At a 100 kHz transmission frequency the overall efficiency, including all power electronic components, is greater than 80 %.

	Evolutionary electrical model of homogeneous discharge By N. Naudé; J-P. Cambronne; N. Gherardi; F. Massines	[View] [Download]
Abstract: The aim of this paper is the modelling of dielectric barrier discharge at atmospheric pressure, in the homogeneous regime. This PSpice model is based on an equivalent electrical circuit. It takes into account the main physical phenomena and the evolution of the discharge static characteristic. This model permits to have a general view of the process and to study the influence of the power supply on the discharge. It is also an interesting tool for the power supply design and the process optimization.

	Design of an electromechanical portable system using human body movement for electricity generation By S. Turri; D. Miller; H. Ben Ahmed; B. Multon	[View] [Download]
Abstract: In this article, the authors present the energy potential associated with an electromechanical resonant generator that uses natural movements of the human body during walking motion, as a means of increasing the autonomy of portable electronic systems. The article begins by characterizing the human walk in terms of frequency and hip displacement amplitude. A combined mechanical and electrical study is then conducted in order to determine an order of magnitude for recoverable power.

	Integrated engineering system for converter-driven rail vehicles: a case study By W. Egli; T. Keller	[View] [Download]
Abstract: The traction chain of modern electric rail vehicles consist of high performance converters which transform the catenary voltage and frequency in variable voltages and frequencies for the traction motor. The design and simulation of such a complex traction chain is demanding. On the one hand many technical constraints must be considered and satisfied, on the other hand data flows between participating design departments must be provided that ensure a sound concurrent engineering process. Both, the technical as well as the procedural challenge, ask for an integrated engineering system that provides the required design and simulation tools and ensures and supports data flows. This paper presents in the first part INTENS™ [1], which provides the integrated engineering system, and in the second part a case study of Bombardier Transportation, where INTENS™ is deployed.

	Electromechanical power converter systems for 5 MW-off-shore wind energy converters By C. Sourkounis; H-P. Beck	[View] [Download]
Abstract: With the increasing nominal power of the plants and the cumulated wind park power, interest in the operating behaviour of the plants and finally of the wind park is developing. Main criteria for the quality of the operating behaviour is based on mains pollution (e.g. harmonics) caused by the wind energy converter itself and by the power fluctuation through the variations in the wind speed. The dynamic and stationary operating behaviour of wind energy converters is on the one hand defined by the structure of the drive train, and on the other hand by the control algorithm. The essence of this paper is the investigation of the operating behaviour of different concepts of wind energy converters in relation to different control algorithms. From the theoretical perspective, several different concepts with synchronous and asynchronous machines combined with low- and medium-voltage converters for variable speed generation are possible. Because of the experiences so far, there are, in practice, only a few concepts suitable for electrical part design. Therefore, in the presented paper, a theoretical and simulated based comparison will be carried out. Five different concepts (some state-of-the-art and some new creations especially for off-shore use) therefore, are compared in relation to necessary requirements.

	The intermediate prototype of the compressor drive for a fuel cell power system By K.O. Boinov; E.A. Lomonova; A.J.A. Vandenput	[View] [Download]
Abstract: The paper summarises several initial steps of configuration and analysis of the system with an air compressor and an electrical drive for the application in a fuel cell (FC) power system (power level is 250 kW). The preliminary FC system configuration procedure with respect to the compression system is reviewed. The dynamic mathematical model of the centrifugal compressor is presented. The preliminary selection of the high-speed induction motor and its parametric optimisation are done by means of design assistant program RMxprt (Ansoft Co.). The performance characteristics of the induction motor are obtained and evaluated for the different compressor system operation points. The transient analysis of the motor is accomplished in the finite element package Maxwell 2D (Ansoft Co). All predictions are validated against the benchmark motor.

	Virtual machinery of the cruise ship C32 By R. Besrest; R. Pauly; J.Y. Renaud	[View] [Download]
Abstract: This paper presents the design methodology and the results of a virtual machinery tool dedicated to transient analysis of All Electric Ship power networks. The dynamic performance study of an existing machinery has shown the great interest of such a tool in power electronics applications and energy system management.