Longitudinal-Field Multi-Airgap Linear Reluctance Actuator

Matt, D.; Goyet, R.; Lucidarme, J.; Rioux, C.

doi:10.1080/07313568708909249

Cited by 21 publications

(7 citation statements)

References 2 publications

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“…• The global-coil multi-airgap architecture, on the other hand, has longitudinal flux, which means that the flux follows the airgap surface. Figure 5b illustrates longitudinal flux for reluctance architecture [7].…”

Section: The Global-coil Multi-airgap Architecturementioning

confidence: 99%

Force density improvements from increasing the number of airgap surfaces in synchronous linear actuators

Cavarec¹,

Ahmed²,

Multon³

2003

IEE Proc., Electr. Power Appl.

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This paper presents a realistic comparison of several electromagnetic architectures for high force density actuators. Four equivalent architectures are chosen and computed with a two-dimensional finite element model. For each architecture, size is optimised in order to maximise the force-volume ratio. This optimisation step is performed with a fixed mechanical airgap. A thermal model is then used to calculate the current density in the coils. Results show that globalcoil architecture performance increases more sharply than other architectures; a scaling effect is thereby introduced for global-coil architectures. A global-coil multi-airgap actuator is presented to illustrate the theoretical results.

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Section: The Global-coil Multi-airgap Architecturementioning

confidence: 99%

Force density improvements from increasing the number of airgap surfaces in synchronous linear actuators

Cavarec¹,

Ahmed²,

Multon³

2003

IEE Proc., Electr. Power Appl.

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“…The flux in the machine can be calculated as (10) where is the area of the air gap. The area of the air gap in the machine during alignment is approximately equal to (11) where is the length of the air gap, and and are the rotor and stator pole angles, respectively. The magnetic field intensity in the air gap can be calculated as (12) Assuming the existence of a large air gap, the ampere turns required to produce the magnetic field intensity are given by (13) where is the number of winding turns per phase and is the peak phase current.…”

Section: B Design Of Rsrmmentioning

confidence: 99%

“…An LSRM based on a tubular structure to be used for short stroke lengths using a double-sided longitudinal flux configuration has been described in [8]- [10]. A longitudinal field LSRM with multiple air gaps has been designed in [11], [12]. Although design of tubular machines has been covered in some detail in [13], in general, design of longitudinal flux single-sided machines has not been explored in the literature.…”

Section: Introductionmentioning

confidence: 99%

Design of a linear switched reluctance machine

Krishnan

Vijayraghavan

Bae

et al. 2000

IEEE Trans. on Ind. Applicat.

106

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A standard design procedure for a single-sided and longitudinal flux-based linear switched reluctance machine is developed in this paper. The proposed design procedure utilizes the rotating switched reluctance machine design by converting the specifications of the linear machine into the equivalent rotary machine. The machine design is carried out in the rotary domain, which is then transformed back into the linear domain. Such a procedure brings to bear the knowledge base and familiarity of the rotary machine designers to design a linear machine effectively. This paper contains the illustration of the proposed design procedure for a 4.8-m-long prototype. An analysis procedure is developed with a magnetic model and results from it are verified with finite-element analysis prior to construction of the prototype. Extensive experimental correlation in the form of inductance versus position versus current and propulsion force versus position versus current to validate the analysis and design procedure is given in the paper. ). Publisher Item Identifier S 0093-9994(00)09256-2. His research interests include the design of switched reluctance motors and their control, permanent-magnet brushless dc motors, linear switched reluctance machines, and magnetic levitation. R. Krishnan (S'81-M'82-SM'95) received the B.E. and M.E. degrees from the College

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“…The actuator presented herein is the result of our previous experimental work with multi-air-gap actuators [4], [9] [10]. Its introduction has been focused on wide bandpass applications.…”

Section: A General Presentation Of the Multi-rod Actuatormentioning

confidence: 99%

“…VR actua- tors exhibit two kinds of patterns: a longitudinal flux pattern [3] ( Fig. 1), where the flux goes from the top to the bottom, and a transverse flux pattern [4], where the flux goes from the left to the right (Fig. 2).…”

Section: A Various Types Of Global-coil Multi-air-gap Actuatorsmentioning

confidence: 99%

New multi-rod linear actuator for direct-drive, wide mechanical bandpass applications

Cavarec

Ahmed²,

Multon

2003

IEEE Trans. on Ind. Applicat.

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Abstract-In this paper, a new multi-rod linear actuator is presented. This actuator has been developed for high thrust density and wide mechanical bandpass applications. The multi-air-gap concept will first be illustrated and explained. Its advantages will be highlighted thanks to finite-element method optimizations. Next, the multi-rod prototype technology will be discussed. Lastly, experimental measurements for prototype forces will be provided.Index Terms-High mechanical bandpass, linear permanentmagnet motor.

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Longitudinal-Field Multi-Airgap Linear Reluctance Actuator

Cited by 21 publications

References 2 publications

Force density improvements from increasing the number of airgap surfaces in synchronous linear actuators

Force density improvements from increasing the number of airgap surfaces in synchronous linear actuators

Design of a linear switched reluctance machine

New multi-rod linear actuator for direct-drive, wide mechanical bandpass applications

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