American Journal of Electrical Power and Energy Systems

Volume 4, Issue 5, September 2015

  • Design of Voice Coil Type Linear Actuator for Hydraulic Servo Valve Operation

    Baek Ju Sung

    Issue: Volume 4, Issue 5-1, September 2015
    Pages: 1-8
    Received: Jul. 03, 2015
    Accepted: Jul. 15, 2015
    Published: Sep. 10, 2015
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    This article belongs to the Special Issue Electrical Special Machines
    Abstract: In this study, we proposed governing equations for voice coil type linear actuator for valve operation. We draw up governing equations which are composed by combination of electromagnetic theories and empirical knowledge, and deduct the values of major design factors by use of them. We suggested the governing equations to determine the values of de... Show More
  • A Comparative Analysis of Cogging Torque Reduction in BLDC Motor Using Bifurcation and Slot Opening Variation

    G. Suresh Babu, T. Murali Krishna, B. Vikram Reddy

    Issue: Volume 4, Issue 5-1, September 2015
    Pages: 9-12
    Received: Aug. 04, 2015
    Accepted: Aug. 05, 2015
    Published: Sep. 10, 2015
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    This article belongs to the Special Issue Electrical Special Machines
    Abstract: The utility of PM-BLDC machines is extending its tentacles in industrial arena. The key features of BLDC machines include high starting torque density and extending speed range, though the cogging torque is a threat for its performance. Various techniques have been devised to minimize cogging torque, out of which two approaches Bifurcation and Slot... Show More