Synchronous electrical machine drives

An examination of rotating‐field machine drives can begin with a look at synchronous machine drives. They are the most versatile alternating‐current (AC) machine type, and they essentially exhibit the characteristics of asynchronous machines. Damper windings are used in synchronous machines to impro...

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Bibliographic Details
Published inElectrical Machine Drives Control pp. 191 - 295
Main Authors Hrabovcova, Valeria, Pyrhonen, Juha, Semken, R. Scott
Format Book Chapter
LanguageEnglish
Published United Kingdom John Wiley & Sons, Incorporated 2016
John Wiley & Sons Ltd
Subjects
air‐gap flux linkage
alternating‐current machine
damper windings
direct online applications
finite element method
synchronous electrical machine drives
torque production
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Summary:An examination of rotating‐field machine drives can begin with a look at synchronous machine drives. They are the most versatile alternating‐current (AC) machine type, and they essentially exhibit the characteristics of asynchronous machines. Damper windings are used in synchronous machines to improve the stability of the drive. In direct online (DOL) applications, synchronous motors have traditionally been used because they offer stepless compensation of the reactive power of other loads connected to the same common coupling point. A two‐axis model derived by applying the space vector theory is employed for the synchronous machine. Finite element method (FEM) magnetic calculation is useful in determining the saturation behaviour of the direct and quadrature magnetizing inductances. A synchronous electric machine operates according to the cross‐field principle. The air‐gap flux linkage in particular is significant for torque production. The field‐winding current arrangements of brushless generators are in principle also applicable to DOL motors.
ISBN:1119260450
9781119260455
DOI:10.1002/9781119260479.ch8