Sensorless switched reluctance starter/generator performance

Power Generation and Distribution System for a More Electric Aircraft - A Review

“…These machines are designed with a high number of phases, such that the machine can continue to deliver a satisfactory level of torque/power after a fault in one or more phases. Furthermore, each phase has minimal electrical, magnetic, and thermal impact upon the others (Argile, 2008;Jack et al, 1996;Jones & Drager, 1997;Mecrow et al, 1996;Mitcham & Cullenm, 2002, 2005White, 1996). This is realised by:…”

“…4. The machine synchronous reactance per phase is typically 1.0 p.u., limiting the shortcircuit fault current to no greater than the rated phase current (AbdElhafez, 2008;Jones & Drager, 1997;Mecrow et al, 1996;Mitcham & Cullenm, 2002, 2005.…”

“…The number of magnetic poles in the machine being similar to the stator slot number; each phase winding can be placed in a single slot, which is thermally isolated from the other phases (AbdElhafez, 2008;Adefajo, 2008;Jones & Drager, 1997;Mecrow et al, 1996;Mitcham & Cullenm, 2002). 2.…”

“…Each phase being attached to a separate single-phase power converter, which achieves the electrical isolation (AbdElhafez, 2008;Adefajo, 2008;Jack et al, 1996;Jones & Drager, 1997;Mecrow et al, 1996;Mitcham & Cullenm, 2002, 2005. 4.…”

“…2. The stator coils being wound around alternate teeth, which provides physical and magnetic isolation between the phases (AbdElhafez, 2008;Jones & Drager, 1997).…”