Electromagnetic and mechanical stress analysis of wind-driven synchronous reluctance generator

Abstract

The investigation explores the mechanical stress and electromagnetic performance for a wind-driven synchronous reluctance generator (SRG). The change in the mechanical stress due to the presence of centripetal force, wind speed, and rotor speed are evaluated for different thickness of tangential and radial ribs. Moreover, the variation in the electromagnetic feature such as the q- and d-axes flux, reactance ratio, inductance, torque and torque ripple are discussed for different thickness of tangential and radial ribs. Increasing both tangential and radial ribs thickness has an effect on the electromagnetic performance, but it is observed that effect is significantly more with the variation of tangential rib thickness. Similarly, the mechanical stress analysis for rotor design has been explored in this paper. It is observed that high concentration of peak stress on the rotor ribs, which limits the range of rotor speed.

Keywords

• electromagnetic
• mechanical integrity
• synchronous reluctance generator
• stress and safety factor
• wind speed