Abstract
Hysteresis motor and clutches have several advantages, such as constant torque from zero to synchronous speed, low torque ripple, and low fabrication cost. Low efficiency and power factor are the main features that have limited the application of this type of electrical machine to few applications. Being a niche argument, little literature has addressed the problem of analytical and finite element (FE) modelling of hysteresis electrical machines. This paper first describes the most important contributions of the literature on the analytical and FE modelling of hysteresis motors and clutches and then proposes a method for the fast computation of its performance. The proposed procedure consists of two steps: first, a magneto-static FE simulation is performed considering the normal magnetization curve of the hysteresis material; then, the average torque is computed by a post-processing analysis. The proposed method is used to analyze a hysteresis clutch and the obtained results are compared with those achieved using a commercial finite element software that implements a vector hysteresis model.
Highlights
In the last decade, the manufacturing industry has been experiencing a paradigm shift referred to as Industry 4.0
The hysteresis motor is an electrical machine whose torque production relies on the principle of magnetic hysteresis, as first pointed out by Steinmetz [3]
[7,8,9]; these methods show limits due to the approximations in the representation of the hysteresis loop these methods show limits due to the approximations in the representation of the hysteresis (e.g.; elliptical shape). Other studies, such as [10,11] proposed a numerical method based on finite loop (e.g elliptical shape). Other studies, such as [10,11] proposed a numerical method based on finite element simulation and vector hysteresis model to compute the output torque of the hysteresis motor
Summary
The manufacturing industry has been experiencing a paradigm shift referred to as Industry 4.0. Other studies, such as [10,11] proposed a numerical method based on finite loop (e.g elliptical shape) Other studies, such as [10,11] proposed a numerical method based on finite element simulation and vector hysteresis model to compute the output torque of the hysteresis motor. Element simulation and vector hysteresis model to compute the output torque of the hysteresis motor Both studies presented an iterative method to calculate the torque, whose main drawback is the. Both studies presented an iterative method to calculate the torque, whose main drawback is the increased computational burden The goal this paperisistotopropose proposeaanew new method method for torque based on a single magneto-static finite element simulation coupled to a simple hysteresis model.
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