Research And Development Of Excitation Control System Based On DSP

Excitation Controller is an important part in the excitation system. It's also important for safely and stably running of the electric power. Excellent excitation controller system not only could guarantee the generator running safely, offer qualify electric power but also could enhance the static stability and transient stability of the electric power system.The feature, status quo and existing problems are described in the article. After analyzing the principle excitation system and the realize method, the excitation controller based on Tms3201f240xa DSP processor is researched and developed, the detail of the hardware, software, firmware and the realized methods are described.The controller takes full advantage of the features of TI Tms3201f240xa processor, such as high performance processing capabilities, plenty of peripherals on chip and high real time control. By the vital of these features the fast AC sampling, synchronic pulse, digital shift phase trigger pulse, CAN bus communication, PID control method and excitation limitations are realized. The pretreatment of the switch signals and the test of the shift phase trigger pulses are realized by using the complex programmable device (CPLD). Because of using TMS3201f240xa and CPLD, the hardware frame of excitation controller is simplified, the stability and anti-disturb of the controller are improved. The excitation debugging software based on Windows is developed in order to make the human interface friendly and to be used easily.Because of its simple construe, high reliability and the high rate of performance to cost, the DSP excitation controller can be widely used in the small or middle size power plant and will be important for these power system.