Dual Output Power Conditioning Supply Using Vector Controlled Three-Phase Induction Generator for Automotive System

This paper describes a simple control structure and dual outputted power conditioning system for indirect vector controlled stand-alone three-phase induction generator (IG) used to operate under variable speeds. The required reactive power for the three-phase IG system is supplied by means of a capacitor bank and a voltage-source PWM converter. Using a capacitor bank to transfer the reactive power to the IG under the rated speed and no-load conditions starts the IG operation and reduces the PWM converter size. The vector control structure, for the variable speed IG power conditioning system compensating for changes in the electrical loads with considering the magnetizing curve of the IG, is developed to regulate the DC link and AC output voltages. This proposed scheme can be used efficiently for variable speed power generation system. The operating performance results of the IG power conditioning system at various speeds and loads are given and show that this system is capable of good AC and DC output voltage regulation