Synchronous, permanent magnet and reluctance motors and drives
Abstract
This increasingly important group of motors (that includes the so-called ‘brushless d.c.’) have the potential to eclipse the induction motor in terms of efficiency because, like the d.c. machine, the ‘excitation’ or flux-producing mechanism is separate from the work producing part. We cover fixed-frequency and inverter-fed operation of excited rotor, permanent magnet, reluctance, and salient PM. For each type we also discuss the field orientation techniques that not only provide high dynamic performance but also ensure self-synchronisation, thereby eliminating the danger of stalling.
Keywords
Synchronous motors; Permanent magnet (PM); Salient; Field oriented control; ...
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