EPE Association: EPE 2011 - LS9e: Topic 10: Switched Reluctance Machines

EPE 2011 - LS9e: Topic 10: Switched Reluctance Machines
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 10: Electrical Machines > EPE 2011 - LS9e: Topic 10: Switched Reluctance Machines

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   Modeling of Flux Reversal Machines for direct drive applications
By Gianmario PELLEGRINO, Christopher GERADA [View]
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Abstract: Flux Reversal Machines can be easy to manufacture, are reliable and well suited for direct-drive applications. They also have the advantage that they can be controlled as standard synchronous PM machines. As for most of doubly salient machines, the machine design is relatively complicated due to the highly non-linear magnetic behavior that makes it difficult to device a general optimal design procedure. A simple hybrid approach, partly analytical and partly finite element based is proposed to address the main FRM design parameters influencing its performance. Based on the modeling approach, a prototype is designed and it is currently under construction, as documented in the paper.

   Modelling and control of one bearingless 8-6 switched reluctance motor with single layer of winding structure
By Chen LI, Hofmann WILFRIED [View]
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Abstract: Some types of bearingless switched reluctance motors (BSRMs) have been developed up to now. Their differences mainly focus on different of stator-rotor tooth number and winding structures: two layers of windings and single layer of windings for 12/8 or 8/6 BSRM. Their driving principles are just the same: driving current and radial force current are regulated to generate torque and radial force separately. The main difference is the loading of two currents on one single layer of windings or on two separate layers of windings. Further analysis proves that single layer winding structure has more advantages, for example simpler motor and winding structure. Based on the above researches, one 8/6 BSRM with simpler single layer of winding structure has been developed furthermore. Its main characteristic is that the total winding number of motor is decreased from eight to six, which is only two more than four windings of a normal 8/6 SRM. Only six converters are demanded to achieve levitation operation. Its special driving theory has been introduced. In order to testify the new idea, theoretical analysis and practical test have been finished for one test motor. One initial speed of about 6000 r/min of levitation operation has been achieved.

   Thermal Modeling of a High Speed Switched Reluctance Machine with Axial Air-gap Flow for Vacuum Cleaners
By Helge J. BRAUER, Rik W. DE DONCKER [View]
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Abstract: Knowing the precise thermal behavior of switched reluctance machines is important to increase thepower density of such machines. Up to now, literature is lacking about how to model in detail switchedreluctance machines at high speed with axial air-gap flow. The aim of this paper is to present a modelshowing the effects of varied air-gap flow on temperature distribution in vacuum cleaner machines witha power of 1kW and 60,000rpm.First, a simulation model was set up, illustrating various operating points of the drive. Then the resultsof this model were verified on a test bench. Hereby, a simulation was found for high-speed switchedreluctance machines that ideally reflects the temperature distribution within the machine and also depictsthe effects of changing axial air-gap flow.In conclusion, this presented model indicates that even at high speed and with reduced air-gap flow,these switched reluctance machines can be operated within established temperature limits. Ultimately,this model is very good for predicting the thermal behavior of similar switched reluctance machines withair-gap flow.

EPE 2011 - LS9e: Topic 10: Switched Reluctance Machines
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 10: Electrical Machines > EPE 2011 - LS9e: Topic 10: Switched Reluctance Machines
	[return to parent folder]

	Modeling of Flux Reversal Machines for direct drive applications By Gianmario PELLEGRINO, Christopher GERADA	[View] [Download]
Abstract: Flux Reversal Machines can be easy to manufacture, are reliable and well suited for direct-drive applications. They also have the advantage that they can be controlled as standard synchronous PM machines. As for most of doubly salient machines, the machine design is relatively complicated due to the highly non-linear magnetic behavior that makes it difficult to device a general optimal design procedure. A simple hybrid approach, partly analytical and partly finite element based is proposed to address the main FRM design parameters influencing its performance. Based on the modeling approach, a prototype is designed and it is currently under construction, as documented in the paper.

	Modelling and control of one bearingless 8-6 switched reluctance motor with single layer of winding structure By Chen LI, Hofmann WILFRIED	[View] [Download]
Abstract: Some types of bearingless switched reluctance motors (BSRMs) have been developed up to now. Their differences mainly focus on different of stator-rotor tooth number and winding structures: two layers of windings and single layer of windings for 12/8 or 8/6 BSRM. Their driving principles are just the same: driving current and radial force current are regulated to generate torque and radial force separately. The main difference is the loading of two currents on one single layer of windings or on two separate layers of windings. Further analysis proves that single layer winding structure has more advantages, for example simpler motor and winding structure. Based on the above researches, one 8/6 BSRM with simpler single layer of winding structure has been developed furthermore. Its main characteristic is that the total winding number of motor is decreased from eight to six, which is only two more than four windings of a normal 8/6 SRM. Only six converters are demanded to achieve levitation operation. Its special driving theory has been introduced. In order to testify the new idea, theoretical analysis and practical test have been finished for one test motor. One initial speed of about 6000 r/min of levitation operation has been achieved.

	Thermal Modeling of a High Speed Switched Reluctance Machine with Axial Air-gap Flow for Vacuum Cleaners By Helge J. BRAUER, Rik W. DE DONCKER	[View] [Download]
Abstract: Knowing the precise thermal behavior of switched reluctance machines is important to increase thepower density of such machines. Up to now, literature is lacking about how to model in detail switchedreluctance machines at high speed with axial air-gap flow. The aim of this paper is to present a modelshowing the effects of varied air-gap flow on temperature distribution in vacuum cleaner machines witha power of 1kW and 60,000rpm.First, a simulation model was set up, illustrating various operating points of the drive. Then the resultsof this model were verified on a test bench. Hereby, a simulation was found for high-speed switchedreluctance machines that ideally reflects the temperature distribution within the machine and also depictsthe effects of changing axial air-gap flow.In conclusion, this presented model indicates that even at high speed and with reduced air-gap flow,these switched reluctance machines can be operated within established temperature limits. Ultimately,this model is very good for predicting the thermal behavior of similar switched reluctance machines withair-gap flow.