MATLAB-SIMULINK(R) library for AC drives simulation

The development of the control structures for AC motors (vector control, fuzzy control, etc.) is easier if good models are available, in order to verify the different ideas. There are necessary accurate models for the AC motors (induction and synchronous), for the different types of inverters and for the blocks often used in the control loops. By using the MATLAB-SIMULINK(R) facilities, a library containing models for the mentioned subsystems was developed. It consists of three divisions, each of them corresponding to one of the described sub-systems: power sources, motors, control. An important aspect is that the control blocks were also used for real time control of the drives, by using the friendly interface supplied by dSPACE GmbH with its DSP control board DS1102. The paper describes the structures and the facilities of the built blocks, as well as examples of models of the complete systems. The simulation results are compared with the experimental ones. The correctness of the developed models is fully confirmed, thus a strong tool for the study of the AC drives is made available.