Digital simulation of induction and permanent magnet synchronous motor starting

In electrical engineering education, modelling and dynamic simulation represent tools in order to understand the behaviour of the different components of electric drive-systems in transitory regimes. In this paper the direct, three steps rheostat, six pulses and PWM inverter starting of induction motor are simulated. The permanent magnet synchronous motor is modeled and starting also with PWM inverter. The model represents an experimental circuit and the oscillograms give the instantaneous electrical variables in every electrical equipment. The design of electrical devices and their interconnection can be proved without or before working in the laboratory in order to reduce the power consumption. The models and the simulation use the environment Matlab - Simulink.