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Synchronous Machines in Electromechanical and Energy Systems

Authored by: Sergey Edward Lyshevski

Mechatronics and Control of Electromechanical Systems

Print publication date:  May  2017
Online publication date:  July  2017

Print ISBN: 9781498782395
eBook ISBN: 9781315155425
Adobe ISBN:

10.1201/9781315155425-6

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Abstract

Direct-current exited, permanent-magnet, and variable-reluctance synchronous machines are widely used in high-performance electromechanical and energy systems [1,2,3,4,5 and 6]. Permanent-magnet synchronous machines guarantee superior performance and capabilities. These machines surpass other electric machines such as permanent-magnet DC and induction electric machines. In high-performance drives, servos, and power generation systems, up to ~100 kW rated and ~1000 kW peak, three-phase, permanent-magnet synchronous machines (motors and generators) are a preferable choice. There are translational (linear) and rotational synchronous machines. A three-phase radial-topology permanent-magnet machine is illustrated in Figure 6.1a. In motors, the electromagnetic torque results due to the interaction of time-varying magnetic field established by the phase windings and the magnetic field produced by magnets or field windings on the rotor [16]. As shown in Figure 6.1b, in generators, the voltages are induced in the stator windings if the machine is rotated by the prime mover. For example, the torque is applied to the generator shaft, resulting in rotation. In high-power power generation systems (~1 to 1000 MW), conventional three-phase synchronous generators are used.

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