Figure 8. Per phase back EMF and corresponding phase current for Trapezoidal, Square and Sinusoidal current fed field oriented control drives

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