A state variables method for the optimization of electrical machines. Application to the acceleration of an inertia

The object of the paper is to define and illustrate a method to ''synthetize'' a motor before optimizing it. The example is the starting of an inertia from rest to full speed by switching on a squirrel cage machine; supply voltage and frequency are kept constant during starting. It is shown that there are only seven independent variables, and that there is no attainable minimum of the starting time. (orig.)