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For reducing the fuel consumption and improving the quality of power supplied by diesel generator, a digital electronic speed control system was designed in this paper. In order to adapt the broad load characteristics of rated operating range, the structure of Variable-Speed-Integrated-Generator (VSIG) was adopted, and two operating modes of speed governor were designed. For improving the performance of speed control, the speed governor of the system employed a fuzzy self-tuning proportion-integral-derivative structure controller that can provide variable gain strategies to account for nonlinearities in the system. The results of test were obtained by a 3kW naturally aspirated diesel generator which was applied islanded load. The test results showed that the system designed had integrated functions of speed regulating and good qulity of power supply.
Date of Conference: 27-29 March 2012