Design Considerations for a Fault-Tolerant Flux-Switching Permanent-Magnet Machine

Analysis of Vertical Strip Wound Fault-Tolerant Permanent Magnet Synchronous Machines

“…From Fig.1, as can be seen that during an inter-turn SC fault, the healthy and the shorted turns behave as two separate circuits which are magnetically coupled, but electrically isolated [7]. As a result, it changes the winding parameters: inductances, resistances and back-EMF.…”

“…The torque is produced by both machines under healthy operation. As soon as a fault is detected [7], the post-fault control (i.e. shorting set of three-phase of faulty machine) is applied.…”

“…A typical fault-tolerant Permanent Magnet Synchronous Machine (FT-PMSM) drive topology includes a number of design features [5][6][7][8][9][10][11][12][13] to enable a level of operation when faults [3,[13][14][15][16][17] ensue. Although such a machine drive topology, if appropriately designed, can potentially tolerate converter failures, winding open circuit failures and terminal SC failures, a winding inter-turn (a single turn) SC fault remains problematic [6].…”

Influence of Different Rotor Teeth Shapes on the Performance of Flux Switching Permanent Magnet Machines Used for Electric Vehicles

“…In particular, after hybrid excitation flux-switching machines were proposed, the flux linked in the armature windings per phase can be increased or reduced according to the operational status requests, which makes the magnetic field easily adjusted [11][12][13]. The fault-tolerant capability of FSPM machines has also been a hot topic in recent years, FSPM machines with fault-tolerant capability can continue to operate under open circuit and short circuit fault conditions [14][15][16][17]. To sum up, because of the FSPM machine's simple structure, good controllability, high power density and fault-tolerant performance, it is a good selection for driving EVs.…”

Design Optimization of Modern Machine-drive Systems for Maximum Fault Tolerant and Optimal Operation

“…The investigations mainly were focused on equipping or modification of the drive control algorithm with additional fault state controls that could improves the reliability, safety, and security margins of machine [16]. Nevertheless, based upon a survey on the current state of the art in fault tolerant researches of machine-drive systems over the last 30 years in those investigations which have proved successful advantage, it is identified that areas of research still require attention to advance the subject [7], [8], [16], [30][31][32][33][34][35][36][37] On the other hand, it is evident that diagnosis of any disease at its initial stages will increase the patient chance to be cured. Therefore, the most effective remedial actions are strongly dependent on a fast and accurate fault detection and diagnosis system and also on the physical characteristics of the machine [38].…”