부산대학교 도서관

In this paper a comprehensive analysis and a testing process are proposed for investigation of a self-excited induction generator working as integrated source in a low power multisource remote site. For its integration, a reliable scheme is defined and several tests are carried out with a laboratory test bench to evaluate the induction generator stability. The analysis defines a preferential operation area for each machine and the testing process reveals the evolution of the voltage stability during transients by a comparative study between autonomous mode and a mode where the induction generator is connected to a multisource DC bus. In order to avoid the voltage collapsing and the demagnetization of the machine it is necessary to identify its parameters and to define its operating working area where the best stability can be obtained as well as the limits of the load variation. The analytical model used to provide the working area is presented in the paper and also the experimental results which show the significant incensement of the load variation interval for the self-excited induction generator connected to a multisource site.