EPE Association: EPE 1997 – 23: Lecture Session L6c: ELECTRIC VEHICLES

EPE 1997 – 23: Lecture Session L6c: ELECTRIC VEHICLES
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   ELECTRIC VEHICLE DRIVE WITH SURF ACE-MOUNTED MAGNETS FOR WIDE FIELD-WEAKENING RANGE
By A. Ackva; A. Binder; K. Greubel; B.Piepenbreier [View]
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Abstract: A permanent magnet synchronous motor for electric vehicle drives is presented, which utilizes series-production components of a servo-motor concept to keep manufacturing costs low. A field-weakening range of at least 1:4 is possible with respect to the mechanical and electromagneticallimits of rotors with surface-mounted magnets. Calculation methods for motor magnetic circuit design and comparison with measured data of a prototype drive are discussed in detail. Comments on drive protection due to the permanent excitation, yielding a high induced voltage at high speed, are given. The motor meets the specifications of the ,Small Drive Size" of the Project EUROPED (European Propulsion Electric Drive), which are issued by ACEA(Association des Constructeurs Europeen de Automobile).

   HIGH EFFICIENCY DRIVE FOR ELECTRICAL VEHICLES - Permanent magnet wheel motor fed by a two stages converter
By F. Bernot; L. Gonthier; S.D. Bocus; S. Elbaroudi; A. Berthon; J.M. Kauffmann [View]
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Abstract: In this paper, a l8kW brushless wheel motor is described with its original two stages, soft commutation, power drive. High efficiency is achieved with the motor and the drive. A two stages DC/ AC/ AC converter for variable ac drives using soft commutation technique is described. It consists of a dual-thyristor voltage inverter connected to cycloconverters. It is realized with IGBTs and it supplies trapezoidal currents to the brushless permanent magnet motor. The realized intermediate alternative voltage link, allows to decouple the commutations of the two stages and to obtain non resonant soft switching conditions. It combines the advantages of a soft commutated converter and those of PWM control (constant commutation frequency, simple control). The experimental results obtained on a bench show that the selected solutions are interesting for multi-motors electrical buses.

   CHARGING STRATEGIES FOR ELECTRIC VEHICULES AND THEIR CONSEQUENCES FOR POWER SUPPLY
By H.-J. Haubrich; A. R. Heider [View]
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Abstract: Since the electric drive as one new innovative propulsion system effects neither local tailpipe nor remarkable noise emissions, the electric vehicle (EV) can certainly improve the ecological situation in congested areas all over the world. However, questions of global ecological consequences of large-scale introduction of EVs still have not thoroughly been answered. They are decisively influenced by the implementation of charging infrastructure and the applied charging strategy. This paper represents the results of a comprehensive investigation in order to evaluate different strategies and their consequences for EV operation's possibilities as well as their effects on power supply.

   CONTROL AND DESIGN INTERACTION IN HYBRID ELECTRIC VEHICLES-' BENEFITS OF USING POWER ELECTRONICS
By M. Hemmingsson; B. Simonsson; M. Alaktila; G. Olsson [View]
[Download]

Abstract: Systems and control design ought to have a strong interaction in the design of a hybrid electric vehicle. It is desirable that the control system can be given as a function of some specifications such as zero emission driving range, acceleration and emissions. The suggested method is to optimise the drive system over a drive cycle given a loss function that captures the specifications on the system. This is not possible to do on-line because of the complexity of the problem. The problem can be optimised off-line. The result is analysed and a controller that mimics the behaviour of the optimal controller has been synthesised.

   DESIGN AND CONTROL OF A PERMANENT MAGNET SYNCHRONOUS MOTOR DRIVE FOR A HYBRID ELECTRIC VEHICLE
By S. Van Haute; St. Henneberger; K. Hameyer; R. Belmans; J. De Temmerman; J. De Clercq [View]
[Download]

Abstract: The design and control of a 45 kW 6-pole permanent magnet synchronous motor (PMSM) with surface-inset magnets for a hybrid electric vehicle is described. The advanced field weakening strategy takes advantage of an additional reluctance torque. The influence of saturation effects on the motor torque is considered by computing the inductances Ld and Lq for each operating point. The accurate prediction of the motor performance is essential for the optimal control of the drive over a wide range of operation. The drive control is simulated and implemented on a DSP based, MATLAB®/SIMULINK® programmable hardware system, using a reduced scale 2.8 kW prototype motor.

EPE 1997 – 23: Lecture Session L6c: ELECTRIC VEHICLES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1997 - Conference > EPE 1997 – 23: Lecture Session L6c: ELECTRIC VEHICLES
	[return to parent folder]

	ELECTRIC VEHICLE DRIVE WITH SURF ACE-MOUNTED MAGNETS FOR WIDE FIELD-WEAKENING RANGE By A. Ackva; A. Binder; K. Greubel; B.Piepenbreier	[View] [Download]
Abstract: A permanent magnet synchronous motor for electric vehicle drives is presented, which utilizes series-production components of a servo-motor concept to keep manufacturing costs low. A field-weakening range of at least 1:4 is possible with respect to the mechanical and electromagneticallimits of rotors with surface-mounted magnets. Calculation methods for motor magnetic circuit design and comparison with measured data of a prototype drive are discussed in detail. Comments on drive protection due to the permanent excitation, yielding a high induced voltage at high speed, are given. The motor meets the specifications of the ,Small Drive Size" of the Project EUROPED (European Propulsion Electric Drive), which are issued by ACEA(Association des Constructeurs Europeen de Automobile).

	HIGH EFFICIENCY DRIVE FOR ELECTRICAL VEHICLES - Permanent magnet wheel motor fed by a two stages converter By F. Bernot; L. Gonthier; S.D. Bocus; S. Elbaroudi; A. Berthon; J.M. Kauffmann	[View] [Download]
Abstract: In this paper, a l8kW brushless wheel motor is described with its original two stages, soft commutation, power drive. High efficiency is achieved with the motor and the drive. A two stages DC/ AC/ AC converter for variable ac drives using soft commutation technique is described. It consists of a dual-thyristor voltage inverter connected to cycloconverters. It is realized with IGBTs and it supplies trapezoidal currents to the brushless permanent magnet motor. The realized intermediate alternative voltage link, allows to decouple the commutations of the two stages and to obtain non resonant soft switching conditions. It combines the advantages of a soft commutated converter and those of PWM control (constant commutation frequency, simple control). The experimental results obtained on a bench show that the selected solutions are interesting for multi-motors electrical buses.

	CHARGING STRATEGIES FOR ELECTRIC VEHICULES AND THEIR CONSEQUENCES FOR POWER SUPPLY By H.-J. Haubrich; A. R. Heider	[View] [Download]
Abstract: Since the electric drive as one new innovative propulsion system effects neither local tailpipe nor remarkable noise emissions, the electric vehicle (EV) can certainly improve the ecological situation in congested areas all over the world. However, questions of global ecological consequences of large-scale introduction of EVs still have not thoroughly been answered. They are decisively influenced by the implementation of charging infrastructure and the applied charging strategy. This paper represents the results of a comprehensive investigation in order to evaluate different strategies and their consequences for EV operation's possibilities as well as their effects on power supply.

	CONTROL AND DESIGN INTERACTION IN HYBRID ELECTRIC VEHICLES-' BENEFITS OF USING POWER ELECTRONICS By M. Hemmingsson; B. Simonsson; M. Alaktila; G. Olsson	[View] [Download]
Abstract: Systems and control design ought to have a strong interaction in the design of a hybrid electric vehicle. It is desirable that the control system can be given as a function of some specifications such as zero emission driving range, acceleration and emissions. The suggested method is to optimise the drive system over a drive cycle given a loss function that captures the specifications on the system. This is not possible to do on-line because of the complexity of the problem. The problem can be optimised off-line. The result is analysed and a controller that mimics the behaviour of the optimal controller has been synthesised.

	DESIGN AND CONTROL OF A PERMANENT MAGNET SYNCHRONOUS MOTOR DRIVE FOR A HYBRID ELECTRIC VEHICLE By S. Van Haute; St. Henneberger; K. Hameyer; R. Belmans; J. De Temmerman; J. De Clercq	[View] [Download]
Abstract: The design and control of a 45 kW 6-pole permanent magnet synchronous motor (PMSM) with surface-inset magnets for a hybrid electric vehicle is described. The advanced field weakening strategy takes advantage of an additional reluctance torque. The influence of saturation effects on the motor torque is considered by computing the inductances Ld and Lq for each operating point. The accurate prediction of the motor performance is essential for the optimal control of the drive over a wide range of operation. The drive control is simulated and implemented on a DSP based, MATLAB®/SIMULINK® programmable hardware system, using a reduced scale 2.8 kW prototype motor.