摘要
提出了一种混合采样的交流功率转换器 ,叙述了该种采样功率测量的原理 ,推导了功率测量的算法和功率测量误差。通过计算机仿真 ,分析了量化误差对混合采样功率测量方法的影响。最后给出了采用 12 bitA D和D A转换器、频率范围为 4 5～ 6 5Hz时的功率测量实验数据 ,结果表明 :混合采样功率转换器的准确度为 3× 10 - 4。
An AC power converter that based on a novel mixed sampling method, the principle of the sampling power measurement, and the power measurement algorithm and its measurement errors are described. By computer simulation, the effects of the quantizing error on power measurement of the mixed sampling method are analyzed. The experimental results are given on condition that frequency rang is 45-65 Hz and A/D,D/A converter are of 12 bit. The results show that the accuracy of the mixed sampling power converter is 3×10 -4 which is significantly improved than that of digital sampling method.
出处
《计量学报》
CSCD
北大核心
2003年第2期137-140,共4页
Acta Metrologica Sinica
基金
Supportedbyfoundationforuniversitykeyteacherbytheministryofeducation(10 87)
