BRUSHLESS SLIP POWER RECOVERY VERSION OF A HOMOPOLAR INDUCTOR MACHINE
Journal Title: World Journal of Engineering Research and Technology - Year 2018, Vol 4, Issue 3
Abstract
The aim of this paper is to present a novel design for the homopolar inductor machine which allows changing the armature frequency using the field circuit frequency at constant rotor speed. Or in other words, The proposed machine is able to provide armature voltage of constant frequency while coupled to a variable speed prime mover. The armature winding is directly connected to the grid without back to back inverter. The elimination of the armature circuit power electronics reduces the overall cost. In brief, the proposed machine has two field windings which are supplied by two phase alternating current. A rotating field is established with an angular speed proportional to the field supply frequency relative to the rotor body. When the rotor revolves, the rotor pulls the flux lines in the same direction of the rotor rotation. The flux speed relative to the stationary armature winding is the resultant of the field supply angular speed and the rotor speed in electrical angle. As the rotor speed changes, it is possible to change the field supply frequency for compensation and keep the armature output frequency constant. In motoring mode, with constant armature voltage magnitude and frequency, the field supply frequency is able to regulate the rotor speed.
Authors and Affiliations
Dr. Elhussien A. Mahmoud
Keywords
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