Title :
A study on operation under faults with the single-phase SR generator
Author :
Sawata, Tadashi ; Kjaer, Philip C. ; Cossar, Calum ; Miller, T.J.E.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
Abstract :
This paper studies operation of the multipole single-phase switched reluctance generator (SRG) under faults, in particular an 8/8-pole switched reluctance machine. A new converter topology which connects coils two banks in parallel is proposed. The combination of multiple coils per phase and the converter circuit suggests improved operation under faults compared with conventional topologies. Output power per coil current under faults is studied by finite-element analysis and static torque measurement. Circuit equations under faults are derived and operation under faults is evaluated by simulation. An SRG controller is constructed and experiments are performed. The experimental results support the equations and simulation results. It is concluded that the SRG can continue generating operation, even when open- or short-circuited coil faults occur, with the proposed converter and proper fault detection circuits
Keywords :
coils; electrical faults; fault tolerance; finite element analysis; machine testing; machine theory; machine windings; reluctance generators; torque measurement; coil banks; fault detection circuits; finite-element analysis; multipole single-phase switched reluctance generator; open-circuit coil faults; parallel connection; power converter topology; short-circuit coil faults; static torque measurement; under fault operation; Circuit faults; Circuit simulation; Circuit topology; Coils; Equations; Finite element methods; Power generation; Reluctance generators; Reluctance machines; Strontium;
Journal_Title :
Industry Applications, IEEE Transactions on
