The reluctance machine is a simple, low cost configuration compared with other types of electric machine. In fact, its development has resulted mainly from a quest for simplicity, where the magnetic circuit comprises only iron and air.
Having a mover or rotor without windings or permanent magnets gives an inherent ruggedness and flexibility in size and shape.
Consequently, the reluctance machine has been successfully utilised in a wide range of applications from low-power relays to high-power traction motors. These machines are highly non-linear in behaviour and good design requires a combination of finite-element analysis and a deep understanding of their theoretical basis.
EMX has many years’ experience of designing reluctance machines for a variety of applications and, combined with our skills in designing permanent magnet and induction machines, makes us well placed to recommend the reluctance machine when most appropriate.