EPE Association: EPE 1995 - 39 - Dialogue Session DS4c: Electric Vehicles Drives

EPE 1995 - 39 - Dialogue Session DS4c: Electric Vehicles Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1995 - Conference > EPE 1995 - 39 - Dialogue Session DS4c: Electric Vehicles Drives

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   HIGH FREQUENCY, THREE PHASE INDUCTION MOTORS FOR WIDE SPEED RANGE APPLICATIONS
By H. S. Rajamani; R. A. McMahon [View]
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Abstract: A high frequency, three-phase induction motor drive has been developed for low power applications requiring a wide speed range. The drive ha~been succesfully tested up to speeds of 22 000 rpm and power levels up to 1 kW. The utilisation of the field weakening region to extend the useful speed range of the induction motor has been demonstrated and the issues involved in the drive design have been studied. A simple, but cost effective control strategy has been implemented with a single 8-bit micro-controller chip.

   DIRECT TORQUE CONTROLLED INDUCTION MOTOR DRIVE UTILIZED IN AN ELECTRICAL VEHICLE
By Roy Nilsen; Tommi Kasteenpohja [View]
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Abstract: A speed sensor less drive system for electrical vehicles is presented. A liquid cooled inverter and induction motor are developed. The inverter is based on a custom designed six-pack IGBT module. A new control method, Direct Torque Control (DTC), is implemented by using Digital Signal Processor and ASIC technology. An on-line efficiency optimization algorithm is applied.

   FLYWHEEL ENERGY STORAGE IN ROAD VEHICLES
By P. P. Acarnley; J. S. Burdess; B. C. Mecrow; J. N. Fawcett; J. G. Kelly; P. G. Dickinson [View]
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Abstract: The paper introduces a flywheel energy storage device, which is based on a brushless dc drive and is capable of enhancing the fuel economy of a hybrid-type road vehicle. Energy storage and power requirements of a full-scale device are related to the potential performance improvements of a passenger car using standard operating cycle data. The mechanical, electrical and magnetic design constraints are explored and it is concluded that the appropriate device configuration is a double-stator, axial-field layout.

   HIGH PERFORMANCE VERNIER RELUCTANCE MAGNET MACHINE: APPLICATION TO ELECTRIC VEHICLE
By J-F. Llibre; D. Matt [View]
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Abstract: Our aim is to present the vernier reluctance magnet machine which· is a new actuator structure with a high power per unit of mass. In the first part of the paper, we will study this machine which is an improvement of classical reluctance machine. The addition of permanent magnets in that structure allows an increasing of performances. Then, we will give the dimensions of a little machine, in order to build a prototype. This last one, actually studied, will permit to validate the functioning principles of this new type of structure. The encouraging performances of this motor let us consider the motorization of an urban electric vehicle. On the last hand, we will propose a dimensioning of a wheel motor (direct drive). The choice of this type of motorization involves strong dimensional constraints. The motor is sized in order to give the expected performances in a 15 inches wheel.

   COMPARATIVE STUDY OF DRIVES FOR BATTERY POWERED LIGHT VEHICLES
By J. Jelonkiewicz; S. Linnman [View]
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Abstract: This paper provides a comparison between a traditional drive with DC motor and new drives having the following motors: Permanent Magnet Synchronous Motor (PMSM), Brushless DC Motor, Induction Motor (IM) and Switched Reluctance Motor (SRM) applied to light electric vehicles. Although designers of mentioned new motors are trying to convince us about their superiority, the problem: "what to choose?" still seems to be open. Therefore this comparative study is carried. out considering basic properties of drives like: power / torque / speed range, efficiency, complexity / reliability, weight / dimensions, availability and price. Particular attention is paid to newly designed disc type PMSM, IM and SRM which allows a gearbox to be eliminated. The comparison is carried out for electric wheelchairs as an exemplified application. However the results could be generalised for light electric vehicles. Finally, the paper presents preferred solution for the wheelchair drive with disc-type induction motor.

EPE 1995 - 39 - Dialogue Session DS4c: Electric Vehicles Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1995 - Conference > EPE 1995 - 39 - Dialogue Session DS4c: Electric Vehicles Drives
	[return to parent folder]

	HIGH FREQUENCY, THREE PHASE INDUCTION MOTORS FOR WIDE SPEED RANGE APPLICATIONS By H. S. Rajamani; R. A. McMahon	[View] [Download]
Abstract: A high frequency, three-phase induction motor drive has been developed for low power applications requiring a wide speed range. The drive ha~been succesfully tested up to speeds of 22 000 rpm and power levels up to 1 kW. The utilisation of the field weakening region to extend the useful speed range of the induction motor has been demonstrated and the issues involved in the drive design have been studied. A simple, but cost effective control strategy has been implemented with a single 8-bit micro-controller chip.

	DIRECT TORQUE CONTROLLED INDUCTION MOTOR DRIVE UTILIZED IN AN ELECTRICAL VEHICLE By Roy Nilsen; Tommi Kasteenpohja	[View] [Download]
Abstract: A speed sensor less drive system for electrical vehicles is presented. A liquid cooled inverter and induction motor are developed. The inverter is based on a custom designed six-pack IGBT module. A new control method, Direct Torque Control (DTC), is implemented by using Digital Signal Processor and ASIC technology. An on-line efficiency optimization algorithm is applied.

	FLYWHEEL ENERGY STORAGE IN ROAD VEHICLES By P. P. Acarnley; J. S. Burdess; B. C. Mecrow; J. N. Fawcett; J. G. Kelly; P. G. Dickinson	[View] [Download]
Abstract: The paper introduces a flywheel energy storage device, which is based on a brushless dc drive and is capable of enhancing the fuel economy of a hybrid-type road vehicle. Energy storage and power requirements of a full-scale device are related to the potential performance improvements of a passenger car using standard operating cycle data. The mechanical, electrical and magnetic design constraints are explored and it is concluded that the appropriate device configuration is a double-stator, axial-field layout.

	HIGH PERFORMANCE VERNIER RELUCTANCE MAGNET MACHINE: APPLICATION TO ELECTRIC VEHICLE By J-F. Llibre; D. Matt	[View] [Download]
Abstract: Our aim is to present the vernier reluctance magnet machine which· is a new actuator structure with a high power per unit of mass. In the first part of the paper, we will study this machine which is an improvement of classical reluctance machine. The addition of permanent magnets in that structure allows an increasing of performances. Then, we will give the dimensions of a little machine, in order to build a prototype. This last one, actually studied, will permit to validate the functioning principles of this new type of structure. The encouraging performances of this motor let us consider the motorization of an urban electric vehicle. On the last hand, we will propose a dimensioning of a wheel motor (direct drive). The choice of this type of motorization involves strong dimensional constraints. The motor is sized in order to give the expected performances in a 15 inches wheel.

	COMPARATIVE STUDY OF DRIVES FOR BATTERY POWERED LIGHT VEHICLES By J. Jelonkiewicz; S. Linnman	[View] [Download]
Abstract: This paper provides a comparison between a traditional drive with DC motor and new drives having the following motors: Permanent Magnet Synchronous Motor (PMSM), Brushless DC Motor, Induction Motor (IM) and Switched Reluctance Motor (SRM) applied to light electric vehicles. Although designers of mentioned new motors are trying to convince us about their superiority, the problem: "what to choose?" still seems to be open. Therefore this comparative study is carried. out considering basic properties of drives like: power / torque / speed range, efficiency, complexity / reliability, weight / dimensions, availability and price. Particular attention is paid to newly designed disc type PMSM, IM and SRM which allows a gearbox to be eliminated. The comparison is carried out for electric wheelchairs as an exemplified application. However the results could be generalised for light electric vehicles. Finally, the paper presents preferred solution for the wheelchair drive with disc-type induction motor.