Performance prediction of laws's relay actuator

Bolton, H.R.; Shakweh, Y.

doi:10.1049/ip-b.1990.0001

Cited by 31 publications

(5 citation statements)

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“…Continued development of FSMs, substituting permanent magnet (PM) with direct current (dc) excited winding was investigated. Of course, this substitution led to reduction of torque density and efficiency of the machine [4]. A more complete structure of threephase version of the motor was introduced in [5].…”

Section: Introduction To Flux Switching Motormentioning

confidence: 99%

Performance Enhancement of Flux Switching Motor for Electric Vehicle Applications: An Overview

Faiz,

Maktobian

2024

IET Electrical Systems in Transportation

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As the reduction of greenhouse gas emissions becomes crucial, electric vehicles (EVs) are expected to enter the market extensively in the coming years. The efficiency of the electrical motor used in EVs plays a significant role in their overall performance. This paper explores the flux switching motor (FSM) and its applications in EVs. The FSM is compared to other electrical motors, highlighting its potential as a suitable choice for EV traction. Various configurations and techniques are reviewed to enhance the performance of FSMs, including magnetic materials, torque ripple alleviation, and magnetic flux weakening. The advantages and disadvantages of these methods are discussed, providing valuable insights for designing FSMs for EVs. Generally, EV traction requires high torque density and high power density electrical motor. To achieve these goals, high electric and magnetic loading must be considered in design stage of the motor. Application of the FSM may be one of the appropriate option. For many reasons, three-phase FSM is preferred. Considering the base speed of machine in the EV and high electric loading, the FSM with 12 stator teeth and 10 rotor teeth may be the most appropriate choice in which the stator core is oriented and rotor core is nonoriented iron. To enhance the torque density and applied flux weakening method, combination of Nd and Al–Ni–Co magnets is preferred.

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Section: Introduction To Flux Switching Motormentioning

confidence: 99%

Performance Enhancement of Flux Switching Motor for Electric Vehicle Applications: An Overview

Faiz,

Maktobian

2024

IET Electrical Systems in Transportation

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“…From the topology point of view, the PPMT machine is originated from stator-PM machines proposed by Rauch and Johnson in 1995 [3], as shown in Fig. 1(a) or the well-known Law's relay actuator [4] as shown in Fig. 1(b).…”

Section: Introductionmentioning

confidence: 99%

“…SMPM machines have attracted more and more attention due to the advantages of robust structure, high power density, high efficiency, and so on, [3][4][5][6]. The most common three SMPM machines are doubly salient permanent magnet (DSPM) machine [7][8][9], flux reversal permanent magnet (FRPM) machine [3,10], and flux switching permanent magnet (FSPM) machine [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Novel Doubly SalientPMMotor Based on Parallel Path Magnetic Technology

Yang

Wang

et al. 2023

IEEJ Transactions Elec Engng

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In this paper, a novel doubly salient PM motor based on parallel path magnetic technology (PPMT) is presented. PPMT is an advanced magnetic control technology, which can be applied to linear and rotary actuators. First, the fundamental principle of the PPMT prototype is elaborated, and then a comprehensive research and analysis of PPMT motor is carried out, with particular emphasis on machine topology, operation principle and electromagnetic performance. The equivalent no‐load PM magnetic circuit model is established and equations for calculating the main PM flux are derived. Besides, a dual‐stator 6‐pole PPMT motor prototype has been developed to valid the analysis. According to the similarity of topology and operation principle, comparison between the FSPM machine and PPMT machine is conducted, which leads to the conclusion that the PPMT motor has lower cogging torque, lower torque ripple and better sine back EMF waveform, the PPMT motor is more suitable for servo applications compared to FSPM motor. Finally, to improve the power density of PPMT motor, FE parametric modeling method for designing the three coupled stator parameters, which are the PM width, the stator yoke width and the second airgap length is given out. © 2023 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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“…Digital Object Identifier 10.30941/CESTEMS.2023.00029 draulic servosystems, with physical sizes typically less than 50 cm 3 [1], [2]. The breadth of operation range for slotted LATMs, i.e.…”

Section: Introductionmentioning

confidence: 99%

Analysis of an Axial-Flux Slotted Limited-Angle Torque Motor with Quasi-Halbach Array for Torque Performance Improvement

Wang

2023

Trans. Electr. Mach. Syst.

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Better torque performance and higher reliability have long been the focus of research for slotted limited-angle torque motors (LATMs), which are primarily used to position first-stage valves in electrohydraulic servosystems. This paper presents a high reliability axial-flux slotted LATM with quasi-Halbach array for torque performance improvement including constant torque range (CTR) and output torque. Firstly, the structure with two sets of windings and the operation principle of the proposed slotted LATM is analyzed. Secondly, a brief design procedure is presented, the structure selections of open slot and double-stator single-rotor (DSSR) interior rotor with surface mounted quasi-Halbach permanent magnet (PM) array are illustrated, and the geometric parameters are optimized to obtain the optimal design of the proposed slotted LATM. Then, 3-D finite-element method (FEM) is employed to compare the proposed slotted LATM with the conventional surface mounted PM slotted LATM in terms of cogging torque, no-load back EMF, and output torque, and the results show that the proposed LATM with quasi-Halbach array has a 10% improvement in output torque and a 25% improvement in CTR. Meanwhile, the flux linkages and torque performance of the two sets of windings under various conditions verify good magnetic isolation. Finally, prototypes of two different rotor types are manufactured and a series of experiments are performed to validate the analysis.

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Performance prediction of laws's relay actuator

Cited by 31 publications

References 0 publications

Performance Enhancement of Flux Switching Motor for Electric Vehicle Applications: An Overview

Performance Enhancement of Flux Switching Motor for Electric Vehicle Applications: An Overview

Analysis and Design of a Novel Doubly SalientPMMotor Based on Parallel Path Magnetic Technology

Analysis of an Axial-Flux Slotted Limited-Angle Torque Motor with Quasi-Halbach Array for Torque Performance Improvement

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