The Research Of Digital Excitation Regulator On The Basis Of T₂X160S2-4 Alternating Current Generator

With the development of electrical power system and the appearance of the big machine, the demand to the excitation regulator is higher and higher. At the same time with the use of the computer and big scale integrated circuit in electric power, the digital excitation regulator will replace the analog excitation regulator. Furthermore, the Micro-controller is more and more widespread, because it is small and special purpose is big. Micro-controller provides the benefit for the special control system.The load is changing when the dynamo is normal. The effect to the dynamo excitation magnetic field is different when the capacity and power factor is different. The internal impedance voltage drop is different. To sustain the voltage of dynamo stable, we must regulate the excitation all the times, according to the capacity of the quality of load. This regulating course must be realized through the auto regulate machine only. This system will finish the function above.The control nuclear of this system is base on the micro-controller, and use PID control, transform the voltage-stabilized power supply based on simulate component into a digital one. In this paper, it discussed the theory of three-phase whole control; introduce the traits of micro-controller; used PID control in this system. This paper also introduce the design of hardware and software, including the three-phase circuit, protect circuit, trigger circuit, examine circuit and so on in detail. The paper explained the method of control and the thought of software. In regard to the disturbance in this system, adopt corresponding methods to avoid it. This system got used the micro-controller fully, and improve the general use of the power and satisfy with teaching.