Linear tubular permanent magnet motor for an electromagnetic active suspension system

Kim, Ki-Hoon; Woo, Dong-Kyun

doi:10.1049/elp2.12128

Cited by 7 publications

(3 citation statements)

References 30 publications

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“…Then, the sampled field is reconstructed by means of special functions called basis functions for any excitation or position. This method is carried out in [2] for the design of linear suspension systems. Although FRM can be effective to decrease the number of FEM evaluations, but the time consumed for each time is drastic compared to analytical methods.…”

Section: Introductionmentioning

confidence: 99%

Analytical modelling of a slotless tubular interior permanent magnet machine considering iron poles permeability

Javanmardi

Rahideh

2023

IET Electric Power Appl

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An analytical method is proposed to model the magnetic field distribution across a slotless tubular interior permanent magnet machine. In order to consider the permeability of both permanent magnets and iron poles of the slider, in the proposed approach, instead of choosing each one as an individual sub‐domain, they are taken as an integrated sub‐domain. Therefore, the governing partial differential equation alters from Poisson equation to the governing magnetostatics equation for inhomogeneous (space‐dependent permeability) materials. The solution is derived through separation of variables method in which a Sturm‐Liouville problem is encountered. The solution and its important mathematical properties, such as the orthogonality and generalised Fourier series, are fully addressed. These properties are very helpful for creating linear interface equations in terms of the integral coefficients. In addition, since the number of sub‐domains is decreased, the total number of the unknowns of the final matrix of equations is reduced effectively. To validate the proposed method, a case study is simulated by the aid of computer software and its results are compared with those of finite element method. It has been observed that the results are in good agreement.

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Section: Introductionmentioning

confidence: 99%

Analytical modelling of a slotless tubular interior permanent magnet machine considering iron poles permeability

Javanmardi

Rahideh

2023

IET Electric Power Appl

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“…This concerns not only the safety and integrity of the goods transported by automobiles but also the riding comfort and handling stability of the vehicle [1]. As a key component of the vehicle's body, the chassis not only supports the vehicle but also accepts the thrust generated by the engine, ensuring the normal operation of the vehicle [2,3]. Suspension systems, as key components of automobile chassis, have garnered significant research interest.…”

Section: Introductionmentioning

confidence: 99%

Research on Magnetic Characteristics and Fuzzy PID Control of Electromagnetic Suspension

Wei

2023

Actuators

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This paper proposes an electromagnetic suspension with an electromagnetic actuator, which can improve the riding comfort and stability of the vehicle without changing the safety of traditional MacPherson suspension. First, the electromagnetic suspension structure is introduced, and the principle of the proposed actuator is described in detail. Second, a magnetic flux density model of a single PM ring (permanent magnetic ring) and a magnet assembly are built, and a theoretical analysis of the magnetic flux density is carried out for comparison. Then, the magnetic flux distribution of the magnetic field is simulated and analyzed using the finite element method (FEM), and is compared with theoretical and other experimental data. Finally, a vehicle dynamics model with 7 DOF is built, and vehicle simulations based on the fuzzy PID algorithm are carried out on a C-grade road surface and a deceleration strip. The theoretical results and simulation analyses of the FEM indicate that compared with the MacPherson suspension, the root mean square values of the acceleration of centroid acceleration for the electromagnetic suspension are increased by 59.08% and 33.34%, respectively, on a C-grade road surface and a deceleration strip, and other physical quantities have also been improved. The structure and characteristics of the proposed electromagnetic suspension that improve the riding comfort of the suspension and enhance the stability of the MacPherson suspension are feasible.

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“…Tubular permanent magnet (PM) machines have low radial electromagnetic force, high power density, and can be driven directly through a standard drive configuration [1][2][3]. As a result, it has become an active research branch for wave energy conversion and other linear driving system [4,5].…”

Section: Introductionmentioning

confidence: 99%

Few‐sample multi‐objective optimisation of a double‐sided tubular machine with hybrid segmented permanent magnet

Liang

Weng

Galea

et al. 2022

IET Electric Power Appl

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Double‐sided tubular machine (DSTM) is very suitable for wave energy conversion but easily suffers from high thrust ripple. In order to get the minimum cogging force with the maximum thrust force, a new DSTM with hybrid segmented permanent magnet array is proposed and optimised by a novel iterative few‐sample multi‐objective optimisation method. The novel optimisation method is based on an iterative Taguchi method framework to obtain optimal design with only few samples. To solve the low precision problem of the iterative Taguchi method, a surrogate‐model based multi‐objective optimisation algorithm that uses a general regression neural network, a speed‐constrained multi‐objective particle swarm optimisation and an exponentially weighted moving average are embedded into this framework. The optimisation result is compared with other alternative topologies and methods, and a prototype is manufactured for testing experiment.

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Linear tubular permanent magnet motor for an electromagnetic active suspension system

Cited by 7 publications

References 30 publications

Analytical modelling of a slotless tubular interior permanent magnet machine considering iron poles permeability

Analytical modelling of a slotless tubular interior permanent magnet machine considering iron poles permeability

Research on Magnetic Characteristics and Fuzzy PID Control of Electromagnetic Suspension

Few‐sample multi‐objective optimisation of a double‐sided tubular machine with hybrid segmented permanent magnet

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