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Multi-coil electromagnets: An accurate magnetic equivalent circuit, cost, and energy management
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields ( IF 1.6 ) Pub Date : 2021-02-08 , DOI: 10.1002/jnm.2868
Ali Hashemi 1 , Parsa Yazdanpanah Qaraei 1
Affiliation  

Using nonintegrated multiple coils in an electromagnet is a way to manage energy and reduce maintenance costs. In order to model and analyze the lifting force and the magnetic field in different zone of the electromagnet, an exact magnetic equivalent circuit (MEC) is required. In this paper, an accurate MEC to analyze dual-coil electromagnets is presented. MATLAB and ANSYS MAXWELL software are used to analyze the proposed MEC and simulate the magnetic field and the lifting force, respectively. In multi-coil electromagnets, if a coil burns out, the electromagnet will still be able to lift the loads with a percentage of the nominal load weight. Also, it is only necessary to replace the burned coil, which reduces the maintenance costs of the electromagnet. Flexibility in winding excitation is another advantage of using multiple coils in electromagnets. In this case, one or more coils can be excited according to the weight of the load. This feature not only increases the lifetime of the coils but also reduces the energy consumption of the electromagnet and no need to use expensive power electronic converters to continuously control the current of coils. To evaluate the proposed MEC, the laboratory platform of an electromagnet was made to lift a load of 100 kg in the air gap of 2 mm and tested in two modes, single-coil and dual-coil. The analytical, simulation, and experimental results have very good agreement, indicating the high accuracy of the proposed MEC.

中文翻译:

多线圈电磁铁:精确的磁等效电路、成本和能量管理

在电磁铁中使用非集成的多个线圈是一种管理能量和降低维护成本的方法。为了对电磁铁不同区域的升力和磁场进行建模和分析,需要一个精确的磁等效电路(MEC)。在本文中,提出了一种用于分析双线圈电磁体的精确 MEC。MATLAB 和 ANSYS MAXWELL 软件用于分析所提出的 MEC 并分别模拟磁场和升力。在多线圈电磁铁中,如果一个线圈烧坏,电磁铁仍然能够以标称负载重量的百分比提升负载。而且,只需更换烧毁的线圈,降低了电磁铁的维护成本。绕组励磁的灵活性是在电磁铁中使用多个线圈的另一个优点。在这种情况下,可以根据负载的重量对一个或多个线圈进行励磁。这一特点不仅增加了线圈的使用寿命,而且降低了电磁铁的能耗,无需使用昂贵的电力电子转换器来连续控制线圈的电流。为了评估所提出的 MEC,电磁铁的实验室平台可以在 2 毫米的气隙中提升 100 公斤的负载,并在单线圈和双线圈两种模式下进行测试。分析、模拟和实验结果具有很好的一致性,表明所提出的 MEC 的准确性很高。这一特点不仅增加了线圈的使用寿命,而且降低了电磁铁的能耗,无需使用昂贵的电力电子转换器来连续控制线圈的电流。为了评估提议的 MEC,电磁铁的实验室平台在 2 mm 的气隙中提升 100 kg 的负载,并在单线圈和双线圈两种模式下进行测试。分析、模拟和实验结果具有很好的一致性,表明所提出的 MEC 的准确性很高。这一特点不仅增加了线圈的使用寿命,而且降低了电磁铁的能耗,无需使用昂贵的电力电子转换器来连续控制线圈的电流。为了评估提议的 MEC,电磁铁的实验室平台在 2 mm 的气隙中提升 100 kg 的负载,并在单线圈和双线圈两种模式下进行测试。分析、模拟和实验结果具有很好的一致性,表明所提出的 MEC 的准确性很高。单线圈和双线圈。分析、模拟和实验结果具有很好的一致性,表明所提出的 MEC 的准确性很高。单线圈和双线圈。分析、模拟和实验结果具有很好的一致性,表明所提出的 MEC 的准确性很高。
更新日期:2021-02-08
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