Prospects for the Use of Limited-Angle Torque Motors in Renewable Energy Systems

Two original designs of permanent-magnet limited-angle torque motors (LATMs) are presented. Development trends for 2014–2024 are summarized, including new topologies, numerical-simulation methods, and application areas. The study highlights LATM capabilities in solar, wind, and bio-energy systems that require high direct torque within a small angular span. The advantages of the proposed motors – with solid and split magnetic cores – as compared to existing counterparts are described. Finite-element mathematical models have been developed and “torque-versus-angle” characteristics analyzed. The upgraded design delivers an almost constant torque over a wide angular range. The findings confirm the promise of LATMs for improving the reliability and efficiency of electromechanical drives in renewable-energy installations.