Synchronous machines - Operating in permanent regime

Synchronous machines are becoming increasingly important for both power generation and drive applications. Even if their structures are varied , they form an extended family with similar characteristics and, while their operating modes are equally diverse, their behaviour can be described using the models presented in the files and of this series. To illustrate the diversity of synchronous machine operating modes, let's mention fixed-frequency and fixed-voltage operation when coupled to a high-power network (generator or motor), fixed-speed (regulated) or variable-speed power generation (automotive alternators, wind turbines, etc.), and controlled actuation where self-pilot operation is often essential. This diversity has led to historically varied approaches to behavior analysis. We propose here to place them in parallel and bring them together in a single file, so as to make it clear that there are ultimately few differences between these modes of operation, which have long seemed so far apart.