Design optimisation of an axially laminated synchronous reluctance motor

Coates, Colin; Platt, D.; Perera, B.S.P.

doi:10.1109/ias.1997.643039

Cited by 6 publications

(6 citation statements)

References 9 publications

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“…In the previous research related to the SynRM, much attention has been directed to improving the rotor saliency ratio , a critical parameter for accomplishing high torque density in sine-wave operation [3], [4]. In this regard, it was demonstrated that an axially laminated rotor is superior to the other rotor structures, except for the unfamiliarity and difficulty in manufacturing [5].…”

Section: Introductionmentioning

confidence: 99%

Rotor structure selections of nonsine five-phase synchronous reluctance machines for improved torque capability

2000

IEEE Trans. on Ind. Applicat.

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Five-phase synchronous reluctance machines (SynRM's) have a higher torque density over conventional three-phase SynRM's due to the utilization of the third harmonics in the magnetic field interacting with appropriate armature current. However, for effective utilization of the third harmonics, it is critical that the rotor of the SynRM creates sufficient coupling between the fundamental and third harmonic components in the field. This paper presents a comparison study of the rotor structures for the nonsine five-phase SynRM's with a detailed examination of two different reluctance rotor structures. The comparison results reveal that, with a simple structure, the salient-pole rotor creates strong mutual coupling between the fundamental and third harmonic MMF's and, thus, outperforms the complicated axially laminated rotor structures for nonsine five-phase SynRM's in terms of torque and ease of manufacturing.

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Section: Introductionmentioning

confidence: 99%

Rotor structure selections of nonsine five-phase synchronous reluctance machines for improved torque capability

2000

IEEE Trans. on Ind. Applicat.

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“…The scaling function for voltage error is, , T(α). The ideal voltage required to maintain the current reference at its desired value is calculated using the generalized voltage equations (2)(3)(4)(5)(6)(7)(8)(9). The inverter switching configuration is then determined by choosing the best voltage vector on the basis of scaled voltage error.…”

Section: B Transformed Frame Controllermentioning

confidence: 99%

“…The synchronous reluctance motor (Syncrel) continues to gain increasing research interest as an alternative to the ac induction motor drive [1][2][3][4][5][6][7][8][9]. Advantages of the Syncrel include its simple rugged rotor structure, comparatively low rotor inertia, high torque density and the absence of rotor windings leading to reduced losses.…”

Section: Introductionmentioning

confidence: 99%

“…The idea is carried to its logical conclusion by assuming a motor is excited by the "ideal" rectangular stator current distribution during the design process. A 5kW axially laminated machine has been designed and built on this assumption [2]. This machine is demonstrated to produce between 1.5 to 2 times the torque output of a similarly sized induction motor.…”

Section: Introductionmentioning

confidence: 99%

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Performance evaluation of a nine-phase synchronous reluctance drive

Coates

Platt²,

Gosbell³

Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248)

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This paper describes the performance of an experimental 5kW nine-phase synchronous reluctance motor (Syncrel) drive. Increasing the number of phases of the Syncrel above three allows the stator MMF's to be shaped, producing significantly greater torque / RMS ampere in the same volume machine. Generalized d-q voltage and torque equations are derived for the nine-phase Syncrel. These demonstrate that harmonic direct and quadrature components of current contribute to torque production in the machine and can be controlled by applying appropriate stator voltages. A fieldoriented controller is described and implemented using a TMS320C32 digital signal processor board. The controller designates portions of the stator winding as supplying either direct or quadrature excitation. A simple inverter switching strategy is used to control the phase currents to their reference values. Experimental current regulation, speed response and torque measurements are presented from the drive. These results validate the system model and demonstrate the drive capability. 2041 0-7803-7116-X/01/$10.00 (C) 2001 IEEE

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“…In the case of optimization, researches proposed an iterative algorithm to determine the geometry of the synchronous machine that maximizes the torque per unit mass [7]. Others utilized a non-deterministic evolution strategy that was employed in conjunction with the Finite Element Method for design optimization of electromagnetic devices and employed fuzzy inference with the Boundary Element Method for shape optimization [8,9].…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Characterization and Optimization of ALA Rotor Synchronous Reluctance Motor Drives for Traction Applications

Al-Aawar

Hanbali

Arkadan

2005 IEEE Vehicle Power and Propulsion Conference

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An integrated Team Artificial Intelligence Electromagnetic, T-AI-EM environment is developed to accurately determine the performance characteristics of synchronous reluctance machines (SynRM) with Axially Laminated Anisotropic (ALA) rotor configurations. This T-AI-EM approach is also used to develop an optimum design of SynRM for traction applications. The main objective of this optimization is to minimize the torque ripple while maximizing the output torque to ensure high acceleration and smooth operation. Furthermore, this model will enable the SynRM motor to easily interact in real time with the control unit of the Hybrid-Electric Vehicle, HEV. The T-AI-EM is composed of two main blocks. The first block consists of electromagnetic module utilizing indirectly coupled finite element state space (FE-SS) model. The second consists of an AI based model inspired from team member concept that consists of several Adaptive Network Fuzzy Inference Systems, ANFISs, supervised by a Radial Based Network, RBN. 0-7803-9280

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Design optimisation of an axially laminated synchronous reluctance motor

Cited by 6 publications

References 9 publications

Rotor structure selections of nonsine five-phase synchronous reluctance machines for improved torque capability

Rotor structure selections of nonsine five-phase synchronous reluctance machines for improved torque capability

Performance evaluation of a nine-phase synchronous reluctance drive

A Novel Approach for Characterization and Optimization of ALA Rotor Synchronous Reluctance Motor Drives for Traction Applications

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