Solid-state switch-mode rectification converters have reached a matured level for improving power quality in terms of power-factor correction (PFC), reduced total harmonic distortion at input ac mains and precisely regulated dc output in buck, boost, buck–boost and multilevel modes with unidirectional and bidirectional power flow. In this paper, an improved power quality converter employing con...

<span lang="EN-US">Brushless DC (BLDC) motor is widely used for various applications such as transportation. BLDC has many advantages compared to brush more compact, high robustness and simplest construction. The maintenance of this also low due absent the inside motor. For electric bicycle application, conventional electromagnetic torque because not properly designed. It faces density in...

The Electrically Excited Doubly Salient Variable Reluctance Machine (EEDSVRM) is a new type of brushless machine designed according to the principle air gap reluctance change. There neither permanent magnet steel nor excitation winding on rotor. rotor made silicon sheets, thus structure variable very simple. are many optimization methods for this optimal design, such as novel topology optimizat...

Cogging torque is a critical dilemma in Permanent Magnet Brushless DC (PMBLDC) motors. In medium-low power PMBLDC motors, redundant vibrations and forbidding noises arise as result of the harmonic magnetic forces created by cogging torque. This paper introduces simple approach for minimizing motors applying placement irregularities rotor magnets. An angle shift magnets surface-mounted helps to ...

Investigation of the dq-Equivalent Model for Performance Prediction of Flux-Switching Synchronous Motors With Segmented Rotors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Zulu, B. C. Mecrow, and M. Armstrong 2393 Modeling and Parametric Design of Permanent-Magnet AC Machines Using Computationally Efficient Finite-Element Analysis . . . . . . . . . . . . . . . . ...

The application of flux-observer-based sensorless control to permanent-magnet brushless ac motor drives is described. Current methods of speed estimation are assessed, both theoretically and experimentally, and an improved method, which combines the best features of methods in which speed is derived from the differential of rotor position and from the ratio of the electromotive force to excitat...