Inhibition of iron loss of the inner yoke in electromagnetic linear actuator

Dai, Jianguo; Zhao, Zhiguo; Xu, Sheng; Wang, Cheng; Zhu, Jianhui; Fan, Xinyu

doi:10.1049/iet-epa.2018.5559

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…Cheng et al [34] designed an HSV with an Fe-based nano-crystalline soft magnetic alloy using metal injection molding technology, which improved the performance of soft magnetic materials, reduced the Eddy current loss of the HSV, and improved the dynamic response speed. Dai et al [35] and Zhao et al [25,26] found that grooving on the iron core can suppress the Eddy effect to a certain extent and enhance the dynamic response speed of the HSV.…”

Section: Introductionmentioning

confidence: 99%

Eddy Effect and Dynamic Response of High-Speed Solenoid Valve with Composite Iron Core

Liu,

Zhang,

Zhao

et al. 2023

Materials

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To alleviate the Eddy effect of the high-speed solenoid valve (HSV) and improve its dynamic response speed, a novel HSV with a composite iron core is presented. The time-step finite element method is used to establish and verify the numerical simulation of HSV coupling multiple physical fields. Then, the Eddy effect and dynamic response characteristics of the conventional and composite HSVs are further compared and analyzed. The results showed that the Eddy current loss in the main pole was the largest for the conventional HSV, accounting for 72.5% and 64.4% in the actuation and release processes, respectively. It was found that the Eddy effect of the composite HSV was obviously weakened, and the total Eddy current losses in the actuation and release processes were reduced by 58.8% and 38.7%, respectively. Meanwhile, the actuation response time and release response time of the composite HSV were shortened by 15.6% and 18.5%, respectively. In addition, increasing the peak voltage further shortened the actuation response time of the composite HSV, but had no significant effect on the response time of the conventional HSV.

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Section: Introductionmentioning

confidence: 99%

Eddy Effect and Dynamic Response of High-Speed Solenoid Valve with Composite Iron Core

Liu,

Zhang,

Zhao

et al. 2023

Materials

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“…A new method was analyzed in [10], which focused on enhancing the stacking factor and air-gap flux density by designing the stator pole end and back iron in separate formations. To reduce the mover core losses, a scheme of making groves was investigated in [11]. This formation scheme reduced the mover core losses significantly.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Performance Investigation of Rectangular-Structured Linear Actuator with End Ferromagnetic Poles

et al. 2023

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Saving energy from domestic appliances is a focus in the effort to combat energy challenges. Linear compressors are a more efficient alternative to the traditional compressors used in refrigerators, which account for 20–40% of all residential electricity use. This article investigates the new topology of the moving magnet (MM), dual-stator single-mover linear oscillating actuator (DSSM-LOA) for linear compressor application. Both the stators were C-shaped, with coils looped across their end sides. Two permanent magnets (PMs) that were axially magnetized were housed on the mover. The PM structural shape significantly affected its fabrication cost and magnitude of magnetic flux density (B). The DSSM-LOA makes use of axially magnetized rectangular-shaped PMs because they are inexpensive and generate high electromagnetic (EM) force density. End ferromagnetic core materials were used to improve the magnetic flux, linking from the stator to the mover. All the design parameters were optimized through parametric analysis using the finite parametric sweep method. Parameters present within the three primary parameters (length, height, and depth) that were assumed constants were optimized, and the optimal dimensions were selected based on the EM force. The investigated DSSM-LOA was contrasted with traditional LOA designs, and they showed significant improvement in EM force per ampere, generally named motor constant (MC), MC per PM mass, MC density, cogging force, and stroke. Additionally, the proposed DSSM-LOA had a simple structure and low cost, and it operated in a feasible range of strokes for linear compressor application.

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“…Linear oscillating actuator (LOA) is an electromechanical system which provides mover's (piston's) reciprocating motion on the same axis without any intermediate mechanism such as gears, screws, or crank shaft [4]. Key advantages of LOA are higher oscillation frequency, lower power consumption and lower manufacturing cost [5]. Based on the configuration of moving part (mover), LOAs are classified as moving coil, moving iron and moving magnet type actuators [6].…”

Section: Introductionmentioning

confidence: 99%

Design of a high thrust density moving magnet linear actuator with magnetic flux bridge

Ahmad

Hassan

Khan

et al. 2020

IET Electric Power Applications

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This article presents a design of a high thrust density moving magnet linear actuator for linear refrigerator compressor. The shape of permanent magnet (PM) shows great effect on cost, fabrication and magnetic flux density generation in the actuator. Axially magnetised disk shaped PMs are low cost and convenient for fabrication. Moreover, axially magnetised PMs generate high flux density in a specific direction compared to radial magnets. This paper investigates the design of axially magnetised moving magnet linear oscillating actuator (LOA) which operates on single phase alternating supply. Additionally, an alternative path is proposed for the return of magnetic flux from mover to the stator. Using finite element method (FEM) tools, all the parameters of LOA are optimised. Moreover, with the help of a specially designed experimental setup, FEM simulation results are validated. This actuator demonstrates great advancement in thrust force density, motor constant and output power compared to the size of proposed LOA.

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Inhibition of iron loss of the inner yoke in electromagnetic linear actuator

Cited by 8 publications

References 27 publications

Eddy Effect and Dynamic Response of High-Speed Solenoid Valve with Composite Iron Core

Eddy Effect and Dynamic Response of High-Speed Solenoid Valve with Composite Iron Core

Electromagnetic Performance Investigation of Rectangular-Structured Linear Actuator with End Ferromagnetic Poles

Design of a high thrust density moving magnet linear actuator with magnetic flux bridge

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