The Research And Development Of Ac/Dc/Ac And Ac/Dc Drive System Incorporated Test Bench

The development of power electronics technology and the birth of the new type of transistor establish material foundation for the development of electric locomotive. In continuous research and innovation, the electric locomotive have developed from AC-DC drive to AC-DC-AC drive. because of the superior speed regulation performance of the DC motor, the AC-DC drive played a dominant role in the electric locomotive system. As the development of self-turn off power device, the excellent merits of AC-DC-AC drive system hold up gradually. Therefore, the AC-DC-AC drive gradually takes the place of AC-DC drive and become dominant position of the electric locomotives. The research and development of the platform of AC-DC-AC drive and AC-DC drive integrated experiment system is goal of this this paper..A detailed description of historical background and research status have been given to the AC-DC-AC drive system and AC-DC drive system,. In the meantime, several classic methods of induction motor have been analyzed.Respectively, detailed analysis of the principle have been given to the AC-DC-AC drive system and AC-DC drive system.Designed the total scheme of the platform of AC-DC-AC drive and AC-DC drive integrated experiment system. The parameters selection of the AC-DC-AC drive main circuit, as well as that of AC-DC drive have finished.In order to make sure the normal performance of the entire system, we utilize MCGS and Lab VIEW to establish interfaces so that the operational status of the entire system can be monitored and some critical variables can be get in real time.After design the whole system, we have finished experiments to test the platform functions. The function of AC-DC-AC drive system and AC-DC drive system are tested.When the DC motor drives, the AC inductor motor generates electricity and feeds power to grid. When the AC_inductor motor drives, the DC motor generates electricity and be consumed bye brake-resistor. Experiment results testify the whole control method and excellent effect performan.