Research On Intelligent Controller Of Small Digital Generator

Digital generator, with the growing yearning of people for natural, healthy and eco-friendly lifestyle as well as the guidance of government for energy efficiency, has been received more and more attention due to its special characteristics such as high-efficiency and low-pollution. There are, however, some issues, such as low performance, low liability, and bad product consistency, widely involved in the controller design of the digital generator though they have been well addressed to some extent in some top brand-name product.This thesis is carried out based on the current situation of domestic digital generator with focus on the special case of Tai Zhou city, one of the production bases of electric generator. In particular, in the context of digital generator at home and abroad, the status and development trends of inverter technology, along with the algorithm for throttle control will be analyzed in detail first. By understanding the state-of-art product of same kind as well as the specific requirement for industrial activity, several control schemes with the corresponding hardware circuit will be then presented, compared and thus improved from the implementation point of view. In addition, mathematical model of the gasoline generator is given with respect to the performance index of throttle control. After some simulation and experimental testing, it turns out that the method embedded with the human-simulated intelligent and fuzzy controller is a good candidate for throttle control. Meanwhile, a soft start function will be integrated into the controller for itself being able to start at some kind of load, e.g., incandescent lamps. Moreover, in order to keep the controller safe and power output to be stable, several techniques are designed and employed accounting for a dozen of abnormal circumstances. Finally, it is verified by experiment that the digital generator driven by the proposed controller provide superior performance than by Kipor's controller in terms of generator speed regulation, output waveform and pressure drop at full load.