Skateboards were organically developed in the 1940s and 1950s; 30 years would then pass before the ollie was developed, unlocking new realms for skaters dedicated to the artform. The advent of ...

Abstract: This article presents the case study of a retrofit project that updated the excitation control system and motor protection on several brushless, synchronous motors at a major refinery in ...

Abstract: In the control system of high-speed sensorless brushless dc motors (BLDCMs), the phase current lag caused by impedance characteristics cannot be ignored. To achieve optimal commutation, ...