Figure 7. (a) 3-phase back EMF at starting and (b) rotor position of trapezoidal current fed field oriented controlled PMBLDC motor drive

From

A New Approach to Enhance the Torque Handling Capacity of a PMBLDC Motor Drive

Protik Chandra Biswas, Bashudeb Chandra Ghosh

American Journal of Electrical and Electronic Engineering. 2016, 4(6), 164-176 doi:10.12691/ajeee-4-6-3