EPE Association: NORpie 2006 - Topic 02: Electrical Machines

NORpie 2006 - Topic 02: Electrical Machines
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2006 > NORpie 2006 - Topic 02: Electrical Machines

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   Parameter analysis of directly network connected non-salient pole permanent magnet synchronous generator
By J. A. Kinnunen; J. Pyrhönen; O. Liukkonen; P. Kurronen [View]
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Abstract: This paper presents the parameter analysis and the performance characteristics of non-salient pole three-phase ac generator equipped with permanent magnets (PM) and damper windings in rigid network and in isolated network operation. By analyzing the results given by analytical calculations and a two axis vector equivalent circuit based simulation model of the PM-machine, acceptable design parameters for network-connected PM-generators are found. The theoretical results are validated by practical experiments carried out on a 5.2kW prototype axial flux permanent magnet machine.

   Comparing Different Slot-Pole Combinations of a Concentrated-Winding Fractional-Slot Permanent-Magnet Machine
By H. Jussila; P. Salminen; M. Niemelä; J. Pyrhönen [View]
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Abstract: This paper compares different slot and pole combinations of a fractional slot permanent magnet machine, which has a fixed air-gap diameter and a 45 kW@400rpm output power. The performance analysis is done for machines having concentrated winding, where the coil is wound around one tooth and the number of slots per pole and per phase is equal to 0.4. Finite element analysis (by Cedrat’s Flux2D) and analytical equations are used in calculations.

   A Novel Transverse Flux Generator in Direct-Driven Wind Turbines
By D. Svechkarenko; J. Soulard; C. Sadarangani [View]
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Abstract: The higher specic torque and power density of a transverse ux permanent magnet (TFPM) machine in comparison to a conventional machine makes it a promising direct-driven wind turbine generator. The new topology presented in this paper is believed to have a better utilization of the available in the nacelle space. This would favor a reduced inactive weight of the generator and thus remove one of the major obstacles for large wind power units. The new topology is presented together with the analytical model used in the design procedure. The analytical model is used in a parametric study and the rst conclusions about the performance of the new TFPM topology are drawn.

   Thermal Properties of a Prototype Permanent Magnetized Electrical Motor Embedded in a Rim Driven Thruster
By Ø. Krøvel; K. Andresen; N. Sandøy [View]
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Abstract: For machine designs it is usually the thermal limits that sets the boundaries for how high the power density of a machine can be. This paper shows calculations of losses and temperatures together with temperature measurements on a 100 kW surface mounted radial flux permanent machine (SM RFPM). The special feature of this machine is that it is totally enclosed in water, which yields very good cooling. The measurements confirm this.

   A prototype design of novel Transverse Flux Machine for the Free Piston Energy Converter
By A. Cosic; C. Sadarangani; D. Svechkarenko [View]
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Abstract: Electrical machine is one of the key parts in the Free Piston Energy Converter (FPEC). In previous work it was found that one of the best candidates suitable for the FPEC is a Transverse Flux Machine (TFM) due to the very tough requirements on the electrical machine such as low weight of the translator (movable part in the machine). This paper presents a novel concept of linear TFM in which strong emphasis has been put on achieving a design that is simple to manufacture. Different types of magnet configurations on the translator have been investigated. It has been found that the buried magnet design suffers from a very high leakage to the nearby poles and is thus not suitable for this type of machine. Another configuration which has been investigated is the surface mounted magnet configuration. Analytical models for this configuration have been established. It has been found that the hard requirements, 4kN from a 6kg movable mass, can be achieved at the required speed, specific power and efficiency.

NORpie 2006 - Topic 02: Electrical Machines
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2006 > NORpie 2006 - Topic 02: Electrical Machines
	[return to parent folder]

	Parameter analysis of directly network connected non-salient pole permanent magnet synchronous generator By J. A. Kinnunen; J. Pyrhönen; O. Liukkonen; P. Kurronen	[View] [Download]
Abstract: This paper presents the parameter analysis and the performance characteristics of non-salient pole three-phase ac generator equipped with permanent magnets (PM) and damper windings in rigid network and in isolated network operation. By analyzing the results given by analytical calculations and a two axis vector equivalent circuit based simulation model of the PM-machine, acceptable design parameters for network-connected PM-generators are found. The theoretical results are validated by practical experiments carried out on a 5.2kW prototype axial flux permanent magnet machine.

	Comparing Different Slot-Pole Combinations of a Concentrated-Winding Fractional-Slot Permanent-Magnet Machine By H. Jussila; P. Salminen; M. Niemelä; J. Pyrhönen	[View] [Download]
Abstract: This paper compares different slot and pole combinations of a fractional slot permanent magnet machine, which has a fixed air-gap diameter and a 45 kW@400rpm output power. The performance analysis is done for machines having concentrated winding, where the coil is wound around one tooth and the number of slots per pole and per phase is equal to 0.4. Finite element analysis (by Cedrat’s Flux2D) and analytical equations are used in calculations.

	A Novel Transverse Flux Generator in Direct-Driven Wind Turbines By D. Svechkarenko; J. Soulard; C. Sadarangani	[View] [Download]
Abstract: The higher specic torque and power density of a transverse ux permanent magnet (TFPM) machine in comparison to a conventional machine makes it a promising direct-driven wind turbine generator. The new topology presented in this paper is believed to have a better utilization of the available in the nacelle space. This would favor a reduced inactive weight of the generator and thus remove one of the major obstacles for large wind power units. The new topology is presented together with the analytical model used in the design procedure. The analytical model is used in a parametric study and the rst conclusions about the performance of the new TFPM topology are drawn.

	Thermal Properties of a Prototype Permanent Magnetized Electrical Motor Embedded in a Rim Driven Thruster By Ø. Krøvel; K. Andresen; N. Sandøy	[View] [Download]
Abstract: For machine designs it is usually the thermal limits that sets the boundaries for how high the power density of a machine can be. This paper shows calculations of losses and temperatures together with temperature measurements on a 100 kW surface mounted radial flux permanent machine (SM RFPM). The special feature of this machine is that it is totally enclosed in water, which yields very good cooling. The measurements confirm this.

	A prototype design of novel Transverse Flux Machine for the Free Piston Energy Converter By A. Cosic; C. Sadarangani; D. Svechkarenko	[View] [Download]
Abstract: Electrical machine is one of the key parts in the Free Piston Energy Converter (FPEC). In previous work it was found that one of the best candidates suitable for the FPEC is a Transverse Flux Machine (TFM) due to the very tough requirements on the electrical machine such as low weight of the translator (movable part in the machine). This paper presents a novel concept of linear TFM in which strong emphasis has been put on achieving a design that is simple to manufacture. Different types of magnet configurations on the translator have been investigated. It has been found that the buried magnet design suffers from a very high leakage to the nearby poles and is thus not suitable for this type of machine. Another configuration which has been investigated is the surface mounted magnet configuration. Analytical models for this configuration have been established. It has been found that the hard requirements, 4kN from a 6kg movable mass, can be achieved at the required speed, specific power and efficiency.