Novel design topology for low leakage field and vibration motor

Abstract

Purpose: The purpose of the paper is to introduce a novel design topology for an electric motor, which has essentially none of the normal sources of magnetic alternating force. Design/methodology/approach: Two-dimensional (2D) and three-dimensional (3D) finite element methods are used to analyze the electromagnetic performance of the proposed machine. 3D integral equations are used to calculate the scalar potentials. Detailed manufacturing process and the results of the testing are presented. Findings The new design will eliminate core vibrations, slot passing frequency vibrations and torque pulsations. The motor also has the property that the external magnetic field is controllable and tunable after the construction. Social implications This approach increases the motor efficiency. Originality/value: The proposed machine has low field and vibration, so it can be used where low exterior fields are required.

Parametric model of electric machines based on exponential Fourier approximations of magnetic air gap flux density and inductance

“…Thus, improvements in lightweight constructions and material savings are limited for designs. This highlights the significance of novel machine designs, such as those shown in Salon and Ergene (2017), Jedryczka et al (2016), Liu et al (2016), Vukoti c andMiljavec, (2016) and Guo et al (2016). A patented air gap winding, as presented in Kasper et al (2015), uses a magnetic circuit with very thin iron cores without slots, in both rotor and stator.…”

Analytical calculation and finite element evaluation of electromagnetic leakage field distribution in surface-mounted permanent magnet synchronous motors taking the rotor eccentricity effect into account

“…Vibration analysis, ultrasound analysis, stator current frequency processing, external search coil next to the motor stator and visual analysis for shaft faults can simply identify the cause(s) of failure and eccentricity from the motor's outer region. In this regard, very comprehensive studies addressing such problems can be found (Çıra, 2018; Lin et al , 2018b; Zhang et al , 2018; Lin et al , 2018a; McCloskey et al , 2018; Kim et al , 2016; Li et al , 2016; Lin and Zuo, 2016; Le Besnerais et al , 2016; He et al , 2020; Wang et al , 2021; Salon and Ergene, 2017).…”