Electric power saving operation of the hysteresis motor using short-duration overexcitation¹

Issue title: Special Issue on the 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering

Guest editors: Sławomir Wiak, Paolo Di Barba and Krzysztof Komeza

Article type: Research Article

Authors: Kurihara, Kazumi^* | Kurihara, Naoki | Kubota, Tomotsugu

Affiliations: Ibaraki University, 4-12-1 Nakanarusawa Hitachi 316-8511, Japan

Correspondence: [*] Corresponding author: Kazumi Kurihara, Ibaraki University 4-12-1 Nakanarusawa Hitachi 316-8511 Japan. E-mail: [email protected].

Note: [1] Use isem2003.tmpl file as a template.

Abstract: The hysteresis motor produces the torque by magnetic hysteresis. The short-duration overexcitation of the hysteresis motor running at synchronous speed reduces the stator current and increases the pull-out torque at the same time. This excellent effect after one-time overexcitation lasts theoretically forever. However, the sudden changes of stator voltage or load torque reduce and vanish it. The duration time of the effect after one-time overexcitation has not been clear in the continuous operation without stator voltage or load torque changes. We used the three-phase balanced voltage source and measured the duration time after one-time overexcitation under no changes of the stator voltage and load torque. It was found that the effect by one-time overexcitation lasted for two weeks of the experimental period. It seems that the effect will last forever. It is clear that electric power saving operation of the hysteresis motor using short-duration overexcitation is quite useful.

Keywords: Electric power saving operation, short-duration overexcitation, hysteresis motor

DOI: 10.3233/JAE-182309

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 57, no. S1, pp. 165-170, 2018