Jean-Paul Louis 
Control of Synchronous Motors 

Synchronous motors are indubitably the most effective device to
drive industrial production systems and robots with precision and
rapidity. Their control law is thus critical for combining at the
same time high productivity to reduced energy consummation. As far
as possible, the control algorithms must exploit the properties of
these actuators. Therefore, this work draws on well adapted models
resulting from the Park’s transformation, for both the most
traditional machines with sinusoidal field distribution and for
machines with non-sinusoidal field distribution which are more and
more used in industry. Both, conventional control strategies like
vector control (either in the synchronous reference frame or in the
rotor frame) and advanced control theories like direct control and
predictive control are thoroughly presented. In this context, a
significant place is reserved to sensorless control which is an
important and critical issue in tomorrow’s motors.

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Jean-Paul Louis is currently ‘professor emeritus’ at ENS Cachan. His current research interests are in the fields of modelling and control of electrical machines and electrical systems.