The inverter controlled cascaded machines as a variable speed brushless generator

The subject of this paper is a rather unusual type of brushless electric machine with properties similar to the slip ring asynchronous machine. The authors give an overview on the machine´s modelling and simulation, presenting new results of their own research upon the background of existing methods. Not only will this be useful for a deeper understanding of the machine´s electromagnetics, it also allows an easy choice of a suitable approach for control design and optimisation of cascaded machines, with focus on generator applications.