EPE Association: EPE 2001 - Topic 06c: Linear Machines and Drives

EPE 2001 - Topic 06c: Linear Machines and Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 06: ELECTRICAL MACHINES AND ADJUSTABLE SPEED DRIVES > EPE 2001 - Topic 06c: Linear Machines and Drives

   [return to parent folder]

   Consideration for the Design of the Linear Parametric Motor
By K. Ishikawa; H. Tan; Y. Kimura; S. Kikuchi [View]
[Download]

Abstract: This paper describes the consideration for the design method of a linear parametric motor with open magnetic circuit to apply to an automatic door in the house. The thrust-to-mass ratio (Fs / M) increase nearly proportion to the stator core width W. The equipped iron plate on the each magnetic pole increase the static thrust Fs sufficiently.

   Modelling and thrust control using resonating controller of asymmetrical PMLSM
By P-J. Barre; A. Tounzi; J-P. Hautier; S. Bouaroudj [View]
[Download]

Abstract: The use of linear motors in machine tools is increasing more and more. In this paper, we propose to study an asymmetrical PMLSM. Firstly, we model the PMLSM using a numerical approach and point out the end length effects on the machine asymmetry. Then, an analytical model is developed taking into account this phenomenon. Lastly, we show that a control strategy in a fixed frame, using resonating controller, is more suitable than a control in the Park moving frame using PI controller.

   Novel Mover Design of LSynRM with Multi Flux-barrier Construction
By M. Sanada; S. Morimoto; Y. Takeda [View]
[Download]

Abstract: A synchronous reluctance motor has many advantages because it has no permanent magnet, such as low back emf in a high speed operation, keeping performance in a high temperature environment and so on. Therefore, many rotor constructions are studied and developed. The rotor with multi-flux barrier structure has the merit of its easy construction and high performances. The linear synchronous reluctance motor have been developed. It is necessary to improve the performance by the mover design for industrial applications. In this paper, we propose a novel configuration of mover for the linear synchronous reluctance motor, and examine the static characteristics of the linear synchronous reluctance motor with reluctance equalization design by using the finite element method. From analytical results, it is cleared that the static characteristics of the linear synchronous reluctance motor is greatly improved by the reluctance equalization design at the iron layer in the mover.

   On A Three-Phase Modular Double Salient Linear Motor´S Optimal Control
By I-A. Viorel; L. Szabó [View]
[Download]

Abstract: The three-phase modular double salient permanent magnet linear motor (DSPMLM) has several advantages over the classical hybrid linear motor. In this paper an adjustable speed control system is proposed for this motor. The motor is energised simply from a low cost readily available standard three-phase compact converter, which is connected to a microcontroller-based intelligent speed control unit. A sensorless closed-loop control strategy based on the so-called back-EMF-voltage detection of the un-energized command coils is proposed. All the drive system's characteristics are analysed by means of simulation. The SIMULINK programs are based on a circuit-field mathematical model of the motor. The results obtained prove the ability of the motor and confirm the usefulness of the presented control strategy.

   Sensorless Propulsion Control of a PM LSM Vehicle with DTC Method
By Kinjiro YOSHIDA; Zheng DAI; Motoyasu SATO [View]
[Download]

Abstract: Sensorless propulsion is one of the most important problems to be solved in practical linear motor application. This paper presents a sensorless direct torque control (DTC) propulsion method of a 1/2-scale controlled-PM linear synchronous motor (LSM) Maglev model vehicle in our Laboratory. DTC can directly control the thrust force and stator flux linkage of linear motor. Because the rated flux linkage of the LSM is too small, a duty control method is combined with DTC to decrease the step of flux linkage between two sampling times. To verify the performance of the sensorless DTC propulsion method, the model vehicle, which is not levitated and supported by the rubber wheel, is used in a 3.5m-propelling-motion experiment. Experimental results show that DTC can drive the vehicle to trace the demand position and speed without position and speed sensor in acceleration, deceleration and constant speed phases, even though there is a strong detent force due to the large semi-closed slots.

EPE 2001 - Topic 06c: Linear Machines and Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 06: ELECTRICAL MACHINES AND ADJUSTABLE SPEED DRIVES > EPE 2001 - Topic 06c: Linear Machines and Drives
	[return to parent folder]

	Consideration for the Design of the Linear Parametric Motor By K. Ishikawa; H. Tan; Y. Kimura; S. Kikuchi	[View] [Download]
Abstract: This paper describes the consideration for the design method of a linear parametric motor with open magnetic circuit to apply to an automatic door in the house. The thrust-to-mass ratio (Fs / M) increase nearly proportion to the stator core width W. The equipped iron plate on the each magnetic pole increase the static thrust Fs sufficiently.

	Modelling and thrust control using resonating controller of asymmetrical PMLSM By P-J. Barre; A. Tounzi; J-P. Hautier; S. Bouaroudj	[View] [Download]
Abstract: The use of linear motors in machine tools is increasing more and more. In this paper, we propose to study an asymmetrical PMLSM. Firstly, we model the PMLSM using a numerical approach and point out the end length effects on the machine asymmetry. Then, an analytical model is developed taking into account this phenomenon. Lastly, we show that a control strategy in a fixed frame, using resonating controller, is more suitable than a control in the Park moving frame using PI controller.

	Novel Mover Design of LSynRM with Multi Flux-barrier Construction By M. Sanada; S. Morimoto; Y. Takeda	[View] [Download]
Abstract: A synchronous reluctance motor has many advantages because it has no permanent magnet, such as low back emf in a high speed operation, keeping performance in a high temperature environment and so on. Therefore, many rotor constructions are studied and developed. The rotor with multi-flux barrier structure has the merit of its easy construction and high performances. The linear synchronous reluctance motor have been developed. It is necessary to improve the performance by the mover design for industrial applications. In this paper, we propose a novel configuration of mover for the linear synchronous reluctance motor, and examine the static characteristics of the linear synchronous reluctance motor with reluctance equalization design by using the finite element method. From analytical results, it is cleared that the static characteristics of the linear synchronous reluctance motor is greatly improved by the reluctance equalization design at the iron layer in the mover.

	On A Three-Phase Modular Double Salient Linear Motor´S Optimal Control By I-A. Viorel; L. Szabó	[View] [Download]
Abstract: The three-phase modular double salient permanent magnet linear motor (DSPMLM) has several advantages over the classical hybrid linear motor. In this paper an adjustable speed control system is proposed for this motor. The motor is energised simply from a low cost readily available standard three-phase compact converter, which is connected to a microcontroller-based intelligent speed control unit. A sensorless closed-loop control strategy based on the so-called back-EMF-voltage detection of the un-energized command coils is proposed. All the drive system's characteristics are analysed by means of simulation. The SIMULINK programs are based on a circuit-field mathematical model of the motor. The results obtained prove the ability of the motor and confirm the usefulness of the presented control strategy.

	Sensorless Propulsion Control of a PM LSM Vehicle with DTC Method By Kinjiro YOSHIDA; Zheng DAI; Motoyasu SATO	[View] [Download]
Abstract: Sensorless propulsion is one of the most important problems to be solved in practical linear motor application. This paper presents a sensorless direct torque control (DTC) propulsion method of a 1/2-scale controlled-PM linear synchronous motor (LSM) Maglev model vehicle in our Laboratory. DTC can directly control the thrust force and stator flux linkage of linear motor. Because the rated flux linkage of the LSM is too small, a duty control method is combined with DTC to decrease the step of flux linkage between two sampling times. To verify the performance of the sensorless DTC propulsion method, the model vehicle, which is not levitated and supported by the rubber wheel, is used in a 3.5m-propelling-motion experiment. Experimental results show that DTC can drive the vehicle to trace the demand position and speed without position and speed sensor in acceleration, deceleration and constant speed phases, even though there is a strong detent force due to the large semi-closed slots.