摘要
介绍了一种基于AVR微处理器的自动准同期装置。该装置通过硬件的输入捕获精确测量周期,采用同步交流采样技术准确计算电压。角差计算提供了完全依靠硬件的过零点比较和高阶泰勒级数展开两种方法。装置在同期点未到来时,可以按照同期逻辑对待并侧的电压和频率进行PID调节。同时该装置还具有TV断线报警等功能,有较高的推广价值。
An automatic synchronism equipment based on AVR micro-processor isproposed in the article. Trough the input capture of hardware, the equipment could measure the period precisely, and voltages can be calculated accurately by adopting the alternating sample methods. The two methods to calculate the phase difference, comparing zero points and higher-order Taylor series,are proposed in details. The equipment can take PID regulation on the voltage and frequency of object side according to the synchronism logics. Besides, the equipment has the functions such as TV break alarm, making it worth being generalized.
出处
《电力科学与工程》
2007年第3期62-65,共4页
Electric Power Science and Engineering
