Performance of Five-phase Motor Drive under Post-fault Operations

This article experimentally compares the post-fault performance of a five-phase permanent magnet motor drive, considering the open circuit fault of both one and two phases. The use of both a half-bridge and a full-bridge converter is considered. Proper current control strategies are applied to get proper performances under faulty operating condition. It is shown that the adoption of the full-bridge converter allows overcoming the constraint of having a zero sum of the currents, and this is particularly advantageous under the fault of two phases. All healthy and faulty operating conditions are experimentally tested.