Abstract-This paper introduces a new method to track the
saliency of a PMSM  motor fed by a four-leg inverter in case of
a single phase open circuit fault through measuring the dynamic
current response of the motor line currents due the IGBT
switching actions. In the case of a single phase open circuit
fault, a fault-tolerant control strategy that includes taking
appropriate actions to control the two remaining healthy
currents, resulting in minor system performance degradation.
The new strategy introduced in this paper includes software
modifications only to the saliency tracking algorithm used in 
healthy mode to make it applicable to the reconfigured
converter in the presence of a fault. The new method uses only
the fundamental PWM waveform (i.e there is no modification
to the operation of the four-leg inverter) similar to the
fundamental PWM method proposed for a three-leg inverter.
Simulation results are provided to verify effectiveness of the
proposed strategy of saliency tracking of a PMSM motor driven
by fault tolerant four-phase inverter over a wide speed ranges
under the case of a single phase open circuit fault. 
 
 

Conference Title

Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2016 International Symposium on

Conference Country

Italy

Conference Date

June 22, 2016 - June 24, 2016

Conference Sponsor

IEEE

Additional Info

Conference Website