July 2023
Intermediate to advanced
736 pages
21h 18m
English
Content preview from Linear Electric Machines, Drives, and MAGLEVs Handbook, 2nd Edition
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17 Linear Single-Phase PM Brushless Motor
17.1 Introduction
The linear dc homopolar-PM motor has been developed from the voice-coil speaker-microphone linear electromagnetic device; however, in most cases, it uses a flat (rather than tubular) topology and is applied for progressive (rather than oscillatory) linear motion; also, the travel may reach 100 mm or more.
As it is based on Lorenz force, to change direction of motion the polarity of the current is reversed [1, 2, 3]. The main asset is the simplicity of the control with full force starting from any position when supplied from a four quadrant dc–dc converter, for a rather long (100 mm or even more), but limited, travel. Short coil mover with long PM or ...
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