Novel Adaptive Controller for Effective Magnetic Measurement Under Arbitrary Magnetization

• Published in: IEEE transactions on industrial electronics (1982) Vol. 67; no. 11; pp. 9841 - 9850
• Main Authors: Vo, Anh-Tuan, Fassenet, Marylin, Kedous-Lebouc, Afef, Blache, Francois, Boudinet, Cedric, Vaillant, Marie-Pierre
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-11-2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Algorithms; Amplitudes; Control algorithms; Control theory; Controlled magnetization; Controllers; Electric power; Electrical steels; Engineering Sciences; Flux density; flux density controller; Frequency measurement; Magnetic hysteresis; Magnetic materials; Magnetic measurement; Magnetic separation; Magnetic variables measurement; Magnetization; Quality control; Saturation magnetization; Soft magnetic materials; waveform controller; Waveforms; soft magnetic materials; magnetic measurement; controlled magnetization; flux density controller; waveform controller; electrical steels
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2019.2955422

In the context of the ever-expanding application of soft magnetic materials, the fully controlled magnetic measurement has, therefore, become essential. It ensures not only the accurate modeling of materials but also the rigorous quality control throughout the manufacturing process, as well as the explicit communication of magnetic data in academic studies or between suppliers and customers. Due to the nonlinearity and hysteresis nature of electrical steels, automatic flux density controller is required for high standard measurements. In this article, we propose a novel steady-state digital control algorithm with two loops, one to regulate the amplitude and the other to correct the waveform of the flux density. Measurement results for various samples tested by Epstein frame and ring specimens under different waveforms, a wide range of frequency and high amplitudes of the flux density have proven the high adaptability, accuracy, and convergence speed of this controller. Its principle is discussed in detail, together with the employed measurement bench.