摘要
以DSP芯片TMS320C5402为核心,设计并实现了实时谐波检测硬件系统。针对电网频率振荡导致的同步采样误差,文中对A/D转换后的数据进行二次软同步采样,在此基础之上进行加窗插值FFT分析以提高谐波检测的精度。实验数据表明该系统测量误差在0.5%以内,可满足工业测量要求。
A power grid harmonics real-time measurement hardware system based on TMS320C5402 is designed and implemented. In order to reduce synchronous-sampling errors caused by power grid frequency oscillation, the AD conversion data are softly synchronously sampled again and then analyzed by the algorithm of cosin-window and interpolated FFT. Experiment data show that the system measurement error is less then 0. 5 %, which meets the requirements of industrial measurement.
出处
《电子科技》
2009年第8期4-6,共3页
Electronic Science and Technology
