Analysis, Design, and Optimization of a Novel Asymmetrical Bistable Short Mover Permanent Magnet Actuator for High-Voltage Circuit Breaker Application

Zeng, Guanbao; Yang, Xingtuan

doi:10.3390/act11070196

Cited by 3 publications

(4 citation statements)

References 38 publications

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“…The initial operation of an MC occurs when current is applied to the excitation coil configured inside the MC, the contacts are attached by force, and an electric circuit is connected [14]. When the contact point is maintained, the exciting current is continuously applied; when the supply of the exciting current is stopped, the electromagnet loses its force, and the contact point is opened by a spring mounted inside, separating the electric circuit [15,16]. Here, the contact point means that the movable contacts and station contacts shown in Figure 1 make contact when an excitation current is applied.…”

Section: Introductionmentioning

confidence: 99%

Two-Level Excitation Current Driver to Reduce the Driving Power of an Electromagnetic Contactor

Park,

Kim,

Lim

2024

Electronics

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As the capacity of the electrical system increases, so does the capacity of the electromagnetic contactor (MC). This increases the burden on the MC drive, which consumes unnecessary power in the system. MC is characterized by different initial starting-operating currents and holding currents to maintain contact. However, the operating voltage is constant regardless of the operating state. The initial starting current is considerably larger than that required to maintain contact. However, once the electromagnetic contactor is in the closed state, the current to maintain the contact is relatively small compared to the initial starting operating currents. Therefore, this study proposes two types of two-level excitation-current type MC drives that can reduce the drive power by employing features that have different conditions depending on the operating state of the MC. The overall drive power is reduced by applying different excitation currents based on the operating state. The controller and system proposed in this study were simulated using Powersim 9.1 (PSIM), and the feasibility was verified by manufacturing an analog-type driver using LM2576 and a digital-type driver using an MCU. The simulation and experimental results provide significant data for verifying the high performance and reliability of the proposed controller and system.

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Section: Introductionmentioning

confidence: 99%

Two-Level Excitation Current Driver to Reduce the Driving Power of an Electromagnetic Contactor

Park,

Kim,

Lim

2024

Electronics

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“…Traditional A.C. contactors have disadvantages such as uncontrollable working processes, slow response, and large contact bounce. 1,2 Some new technical proposals have been proposed to solve these problems, including permanent magnet contactor, 3,4 semiconductor contactors, 5 and composite contactors. 6,7 Although the permanent magnet contactor has great advantages in energy consumption and noise, the working mode of dynamic and static core suction makes it difficult to completely eliminate the contact bounce phenomenon in the closing process, and when the control circuit failure or demagnetization coil failure occurs, the permanent magnet contactor can not be disconnected normally.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Material performance analysis and structure design of the A.C. contactor driven by MSMA

Zeng,

Huang,

Wan

et al. 2024

Advances in Mechanical Engineering

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Contactors are extensively utilized in the control field. Enhancing the response speed and reducing mechanical tremors during switching-in hold great significance in improving contactor’s reliability. A novel A.C. contactor suitable for low-voltage environments has been developed based on the unique properties of the magnetic shape memory alloy (MSMA). It exhibited remarkable characteristics such as large dependent variables, fast response speed, and strong controllability. First, the magnetron characteristics of the MSMA were introduced. Then, the overall structure of the new contactor was designed based on the MSMA output characteristics and the contactor’s design requirements. Next, switching-in characteristics of the contactor under the drive signal were analyzed through simulation. Finally, an experimental measurement was carried out to test the performance of the prototype contactor during separating brake and switching in. The A.C. contactor driven by the MSMA could achieve a response speed of 9.8 ms. The contact movement in the switching process is smooth, which effectively avoids the occurrence of contact bounce in the closing process, which provides theoretical support for the development of the MSMA in the field of low-voltage electrical control application research.

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“…High-voltage circuit breakers have the role of protecting and controlling the power system; their reliability is the basis for ensuring the safe and stable operation of the power system [1,2]. Previous studies have shown that many of the failures of high-voltage circuit breakers are caused by the failure of the operating mechanism [3,4]. Compared with other types of actuators, the spring actuator has the advantage of requiring a small capacity of power supply, and it can be used in both remote electric energy storage and manual operation; therefore, it is widely used in high-voltage circuit breakers [5].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Heating Effect of a Spring-Loaded Actuator—Part II: Optimization Design of Heater Parameters

Zhao

Gao

et al. 2023

Actuators

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Unfavorable temperatures and humidity will cause the failure of spring actuators. In order to ensure the safe operation of the actuator, it is necessary to optimize the design of the built-in heater system of the actuator itself. In this study, an experimental design and a response surface model were used to fit the empirical formulas for the minimum temperature, maximum humidity, and maximum temperature on the heater surface. On this basis, a genetic algorithm was used to establish the optimal size of the heater in the chamber of the spring actuator. The study results show that the air inside the actuator shows a trend of a decrease in temperature and an increase in relative humidity from top to bottom. The empirical equation obtained by fitting the second-order response surface model has high accuracy, and the maximum prediction errors for the minimum temperature, maximum relative humidity, and maximum temperature of the heater surface of the spring actuator are −0.5%, 11.7%, and 4.7%, respectively. When the environmental temperature reduces from 313 K to 233 K, the optimal heating power of the heater increases from 10 W to 490 W, the optimal relative length increases from 3.57 to 6, and the optimal relative width increases from 1 to 5.3. Therefore, the study can act as a reference for the temperature and humidity control system of future actuators.

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Analysis, Design, and Optimization of a Novel Asymmetrical Bistable Short Mover Permanent Magnet Actuator for High-Voltage Circuit Breaker Application

Cited by 3 publications

References 38 publications

Two-Level Excitation Current Driver to Reduce the Driving Power of an Electromagnetic Contactor

Two-Level Excitation Current Driver to Reduce the Driving Power of an Electromagnetic Contactor

Material performance analysis and structure design of the A.C. contactor driven by MSMA

Numerical Study on the Heating Effect of a Spring-Loaded Actuator—Part II: Optimization Design of Heater Parameters

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