Influence of skewing design for reduction of force ripples in DSL-SynRM using 3D FEA

Abstract

Double Sided Linear Synchronous Reluctance Motors (DSL-SynRM) are being increasingly used in high force density applications. The force ripples are one of the major issue in machine which is due to nonlinear nature of current in the machines. This paper focuses on the reduction of force ripples for increasing the force density of the motor. In order to reduce the force ripples, DSL-SynRM with a skewed translator is proposed. The proposed structure is designed and developed by using computational magnetic tools. This concept is effective for reduction of the force ripples and improves the force density of the machine. The proposed design has been reduced the percentage of force ripples by 21.62 %, improved the force density by 10.32 N/mm³ and efficiency by 0.89%.

Design and Double-Stage Optimization of Synchronous Reluctance Motor for Electric Vehicles

“…Many parameter optimization studies of electric motors focused on the skew technique in the literature. Some of these studies made a skewed rotor design [14][15][16] and some made a skewed stator design [17,18]. The stator skew technique is used in the present study to minimize torque ripple.…”

“…10 illustrates the skewing concept of SynRM's stator. Where, 𝜃 𝑆𝑘𝑒𝑤 is skew angle, 𝐵 𝑠 is the slot width and 𝐻 𝑠 is slot height of SynRM's stator [29]. In this study, the torque and torque ripple were investigated according to the change in the stator skew angle, keeping all input parameters constant except the skew angle.…”

“…The skew technique has been applied to the stator of SynRM, but the designed motor has high torque ripple and low efficiency. After applying the skew technique, the efficiency of the motor is 76.04% and the torque ripple is 30.18% [18]. S. Taghavi et al designed SynRM for EV.…”