Novel Switched Reluctance Motor Design That Reduces Torque Ripple

Overview

Electric motors used in industrial applications use rare earth magnets derived from rare earth metals. Rare earth metals are nonrenewable and acidify the surrounding soil and water when mined. Switched reluctance motors (SRM) are one potential solution to this issue because they donʼt need rare earth magnets. However, they have two operational flaws: torque ripple and eddy currents. Torque ripple is the periodic change in output torque as the motor shaft rotates. Torque ripple and eddy currents disrupt rotor-stator interactions, cause instability, and reduce the load-bearing performance of SRMs in industrial applications. The study aimed to design an SRM that significantly reduced torque ripple and eddy currents. This was achieved by replacing the typical stator electromagnets with custom wire coils in the shape of curved c-channels. The rotor poles pass through the center of powered c-channel coils and use their directional inner magnetic fields to rotate. A custom operation circuit with a speed controller was also built, and together, the motor and the circuit save on costs as compared to the typical SRM. The novel SRM design is significantly more efficient than a typical SRM while minimizing torque ripple and eddy currents and maximizing angular speed and performance torque.

Competition history

• AJAS 2025 Category not listed

Related projects

Closest projects by meaning, across every fair and year in the corpus.

Browse more like this

• All Engineering projects
• AJAS Engineering projects
• Every AJAS 2025 project