Characteristics of a bistable permanent magnet linear actuator with soft magnetic mover

Yatchev, Ivan; Hinov, Krastyo; Trifonov, Nikola

doi:10.3233/jae-2008-934

Cited by 8 publications

(5 citation statements)

References 4 publications

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“…The non-plane contact cylindrical unsymmetrical bistable PMA is proposed in [22]. This PMA is characterised by several advantages, such as long effective driving journey, rapid operation, small brake impact separation, and long machine life.…”

Section: Introductionmentioning

confidence: 99%

“…However, the holding force in the open stage is over the need of HVCB, which increases the wastage and closing time. Thus, the unsymmetrical structure bistable PMA (USBPMA) is proposed, which overcomes some of the disadvantages of the SSBPMA, such as the large retention in the opening state, and large closing current [22][23][24][25][26][27][28][29]. However, the USBPMA also has defects, such as a low initial speed.…”

Section: Introductionmentioning

confidence: 99%

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Unsymmetrical bistable multimagnetic circuit permanent magnet actuator for high‐voltage circuit breaker application: analysis, design, and dynamic simulation

Zeng

Yang

Yin

et al. 2020

IET Electric Power Applications

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In this study, an unsymmetrical bistable multi-magnetic circuit permanent magnetic actuator is proposed. The operating principle and mathematical model of the high-voltage circuit breaker with the proposed machine are analysed. Additionally, the static and dynamic characteristics of the high-voltage circuit breaker with the presented machine are investigated and evaluated using numerical finite element analysis methods. Furthermore, the influence of the length of the middle gap and the additional coil in the proposed machine are studied. The advantages of the presented machine, such as less magnet volume, low cost, high force density, and short starting time, are discussed. Finally, a prototype is created and tested, followed by the retrieval of the characteristic curves of the holding force to confirm the proposed design.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unsymmetrical bistable multimagnetic circuit permanent magnet actuator for high‐voltage circuit breaker application: analysis, design, and dynamic simulation

Zeng

Yang

Yin

et al. 2020

IET Electric Power Applications

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show abstract

“…Multi-stable is a trend towards power consumption reduction or fast response, through advances in high-energy permanent magnet (PM) materials like NdFeB. Yatchev et al developed a bi-stable permanent magnet linear actuator with soft magnetic mover [10]. You et al designed a concentric, bi-directional valve actuator that contains doublelayer permanent magnets to increase the holding force [11].…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization and Analysis of Tri-Stable Permanent Magnet Actuators for Valve Application

Tan

Wang

et al. 2019

IEEE Access

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Tri-stable permanent magnet actuator (TPMA) has been widely used in industry. In this study, a new TPMA integrating a permanent magnet actuator and two centralizing disc springs is proposed for valve application. By taking the linear coefficient of force/stroke characteristic, startup force, holding force and response time as the optimization objective, the TPMA was optimized based on an improved hierarchical genetic-particle swarm algorithm (HGP) and 3D Finite element analysis (FEA) under volume constrain. The optimization process was analyzed in detail to prove the effectiveness of multi-objective design. The performance of the prototype was verified experimentally. The results showed that a good linear force/stroke characteristic of prototype was obtained, and the linear coefficient of force/stroke characteristic was 0.97. The startup force was 409 N and holding force was 332 N, which increased by 32% and 54% after optimization, respectively. The dynamic response time of prototype from center stability to extreme stability was 5.8 ms. The TPMA can be applied extensively in the valve control. INDEX TERMSTri-stable permanent magnet actuator, multi-objective optimization, finite element analysis, force characteristic.

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“…BPMA is an actuator towards a reduction in the power consumption or improvement the fast response, through advances in high-energy permanent magnet (PM) materials like neodymium-iron-boron (NdFeB) [8]. But the BPMA possesses quite nonlinear force/stroke characteristic, which results in insufficient driving force when mover is away from target end [9,10]. Spring mechanism was introduced to solve this problem, which makes the actuator more complex and impairs holding force.…”

Section: Introductionmentioning

confidence: 99%

Sensorless Landing Control Strategy of Bistable Permanent Magnet Actuator

Tan

Wang

et al. 2019

Mathematical Problems in Engineering

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Bistable permanent magnet actuator (BPMA) has been widely used in on/off application. However, the response time and landing performance of on/off actuator are contradictory. Through analyzing the landing control goal of on/off actuator and sensorless technology features of the BPMA, a new sensorless landing control strategy was proposed using armature position detection instead of real-time displacement estimation or displacement sensor. The feasibility and effectiveness of the method are verified by experiment and simulation, the operation quality of BPMA is effectively improved. The results show that the first bounce decreases by 85.7% and the second bounce is avoided when the iteration converged, compared to the condition without landing control, while the response time increased by 6.8%. Meanwhile, the landing velocity decreased more than 50% and sound intensity at different frequencies reduced more than 4dB with sensorless landing control strategy. Although in this paper the control strategy was employed to a BPMA, its structure can be used to analyze and design a wide range of on/off actuator.

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Characteristics of a bistable permanent magnet linear actuator with soft magnetic mover

Cited by 8 publications

References 4 publications

Unsymmetrical bistable multimagnetic circuit permanent magnet actuator for high‐voltage circuit breaker application: analysis, design, and dynamic simulation

Unsymmetrical bistable multimagnetic circuit permanent magnet actuator for high‐voltage circuit breaker application: analysis, design, and dynamic simulation

Multi-Objective Optimization and Analysis of Tri-Stable Permanent Magnet Actuators for Valve Application

Sensorless Landing Control Strategy of Bistable Permanent Magnet Actuator

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