This paper introduces a new method to track a saliency in a five-phase permanent magnet synchronous motor (PMSM) in case of a single-phase open circuit fault. The proposed method depends on  measuring the dynamic current response  of the motor line currents due to the insulated-gate bipolar transistor(IGBT) switching actions. In case of a single-phase open circuit fault, a fault-tolerant control strategy to control the reaming healthy currents results in minor system performance degradation. The new strategy that is proposed in this paper to track the saliency includes software modifications only to the saliency tracking algorithm used in healthy mode in order to make it applicable in the cases of a single phase open circuit fault.  It uses the fundamental pulse width modulation (PWM) waveform obtained using a symmetric multi-phase space vector pulse width modulation only (SVPWM). Simulation results are provided to verify the effectiveness of the proposed design over a wide speed range under different load conditions.

Title

Iranian Journal of Science and Technology - Transactions of Electrical Engineering

Publisher

Springer

Publisher Country

Iran

Indexing

Thomson Reuters

Impact Factor

0.6

Publication Type

Prtinted only

Volume

4

Year

2019

Pages

1-17