A New Approach of Minimizing Commutation Torque Ripple for BLDCM

The properties of brushless DC motor (BLDCM) are similar to the fractional, Oregano slot-concentrated winding of permanent-magnet synchronous machines, and they fit well for electric vehicle application.However, BLDCM still suffers from the high commutation torque ripple in the case of the traditional square-wave current control (SWC) method, where

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3D INVISCID FLUTTER OF ROTOR BLADES AND STATOR/ROTOR STAGE

Numerical calculations of the 3D transonic flow of an ideal gas through turbomachinery rotor blade row and stator, rotor blades moving relatively one to another with taking into account the blades oscillations are presented.The approach is based on the solution of the coupled aerodynamic-structure problem for the 3D flow through the turbine stage i

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The developmental variations of the sagitta otolith in the young and mature male of a hermaphrodite polynemidae fish, Eleutheronema tetradactylum (Shaw, 1804)

Abstract The Eleutheronema tetradactylum is a protandrous, hermaphrodite, marine perciformes fish.The body length of this fish acts as an important diagnostic marker for male and female discrimination.The present study describes for the first time the ultrastructural characteristics on the medial surface of the sagitta otolith in different body siz

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Social classification of the audiovisual information in the televisive repositories : automatizing the internal classification and bring the contents closer to the audience

Purpose: A integration model of social classification in the audiovisual repositories is presented with the aim of being used to identify and retrieve contents between external users and journalists of the organization itself.Design: All the Mugs scientific literature has been reviewed interpreting the scarcities and problems found by journalists a

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