EPE Association: NORpie 2000 - Topic 16: ELECTRICAL DRIVES DESIGN

NORpie 2000 - Topic 16: ELECTRICAL DRIVES DESIGN
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2000 > NORpie 2000 - Topic 16: ELECTRICAL DRIVES DESIGN

   [return to parent folder]

   Design Procedure for Line-Start Permanent Magnet Motors
By Louis Lefevre; Juliette Soulard; Hans-Peter Nee [View]
[Download]

Abstract: The Line-Start Permanent Magnet Synchronous Motors (LSPM) considered are high-efficient motors with permanent magnets buried in the rotor below a squirrel cage. The paper deals with the design procedure developed for this type of Line-Start PM Motors. This procedure is a step-by-step method. The goals are high efficiency, starting capabilities and synchronization. This procedure deals only with the rotor design. Most of the design criteria are based on experience from previous prototypes. The designed motors have been verified with F.E.M. Very good agreement between F.E.M. and the analytical model is pointed out. However, this accuracy reduces with the level of saturation of the first tooth in front the magnet and the number of poles.

   Inductance of Slotless Machines
By Jörgen Engström [View]
[Download]

Abstract: This paper presents a simplified model for the inductance of slotless machines. The need for a simple model is forced by the fact that the model is to be used in an optimization program, and a complex model would require too much computing time. A model for the end-winding inductance is also included. The presented model is compared to FEM calculations and measurements on a prototype machine. The comparison show that the simplified model can be used. The iron losses in the end-shields are also discussed and it is shown that these losses can be a substantial part of the total iron losses.

   Harmonic Distortion and Reduction Techniques of PWM Adjustable Speed Drives – A Cost-Benefit Analysis
By Steffan Hansen; Peter Nielsen; Paul Thøgersen [View]
[Download]

Abstract: In this paper the line side harmonic distortion of three-phase low voltage adjustable speed drives (ASD’s), in the range of a few kW to some hundreds kW, and the harmonic reduction techniques dominating the ASD market are presented. The most significant advantages and disadvantages of these techniques are discussed and a costbenefit analysis is made. Finally some example calculations are made on a real application.

NORpie 2000 - Topic 16: ELECTRICAL DRIVES DESIGN
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2000 > NORpie 2000 - Topic 16: ELECTRICAL DRIVES DESIGN
	[return to parent folder]

	Design Procedure for Line-Start Permanent Magnet Motors By Louis Lefevre; Juliette Soulard; Hans-Peter Nee	[View] [Download]
Abstract: The Line-Start Permanent Magnet Synchronous Motors (LSPM) considered are high-efficient motors with permanent magnets buried in the rotor below a squirrel cage. The paper deals with the design procedure developed for this type of Line-Start PM Motors. This procedure is a step-by-step method. The goals are high efficiency, starting capabilities and synchronization. This procedure deals only with the rotor design. Most of the design criteria are based on experience from previous prototypes. The designed motors have been verified with F.E.M. Very good agreement between F.E.M. and the analytical model is pointed out. However, this accuracy reduces with the level of saturation of the first tooth in front the magnet and the number of poles.

	Inductance of Slotless Machines By Jörgen Engström	[View] [Download]
Abstract: This paper presents a simplified model for the inductance of slotless machines. The need for a simple model is forced by the fact that the model is to be used in an optimization program, and a complex model would require too much computing time. A model for the end-winding inductance is also included. The presented model is compared to FEM calculations and measurements on a prototype machine. The comparison show that the simplified model can be used. The iron losses in the end-shields are also discussed and it is shown that these losses can be a substantial part of the total iron losses.

	Harmonic Distortion and Reduction Techniques of PWM Adjustable Speed Drives – A Cost-Benefit Analysis By Steffan Hansen; Peter Nielsen; Paul Thøgersen	[View] [Download]
Abstract: In this paper the line side harmonic distortion of three-phase low voltage adjustable speed drives (ASD’s), in the range of a few kW to some hundreds kW, and the harmonic reduction techniques dominating the ASD market are presented. The most significant advantages and disadvantages of these techniques are discussed and a costbenefit analysis is made. Finally some example calculations are made on a real application.