Design of a Brushless Synchronous Generator with an Excitation Winding Located on the Stator

In this article, the design of a brushless generator with an excitation winding from located winding on its stator is proposed. Permanent magnet generators have a number of undoubted advantages, which include their high efficiency and small dimensions. However, their disadvantage is the inability to adjust the level of the output voltage during fluctuations in the speed of rotation of the shaft and when the load changes. This is especially important for wind turbines where variable operating conditions are not uncommon. Synchronous generators with an excitation winding on the rotor solve this problem, but they have brushes and require periodic maintenance, which is difficult especially in the case of wind turbines. This article proposes the design of a synchronous generator with an excitation winding located on the stator. This option, when both windings - excitation and the output winding - are located on the stator, makes it possible to exclude brushes from the design of the generator and thereby increase its reliability during long-term operation. The design is original and proposed for the first time.