一种a，b，c坐标系频率自适应谐波检测算法

传统的基于瞬时无功功率理论的谐波检测算法需要4次矩阵运算和三角函数运算,算法复杂.针对该问题,提出一种基于瞬时无功功率理论的谐波检测算法,只需一次矩阵运算即可实现与传统算法等效的检测结果.采用高速定点DSP芯片TMS320F2812对提出的算法进行数字化实现.实验结果表明,提出的算法与传统谐波检测算法等效,但该算法更简单,大大减少了执行时间.

A Novel Frequency-adaptive Harmonic Extraction Algorithm

The traditional harmonic extraction algorithm based on the instantaneous reactive power theory needs four matrix transformations and sine/cosine operations,which render the algorithm complex.Therefore,a stationary frame harmonic ex-traction algorithm derived from the instantaneous reactive power theory is proposed to simplify the traditional one.The pro-posed algorithm is equivalent to the instantaneous reactive power theory,but it needs only one matrix transformation.A fixed point DSP TMS320F2812 is used for the digital algorithm implementation.Experimental results show the proposed al-gorithm has the same results as the traditional one,but far more simplified form and reduced program executive time.