Power system frequency is one of the most important parameters of power quality,the tracking measurement of frequency is the basis of the normal operation,adjustment and control of the electrical power system. The paper proposes a realization of frequency tracking algorithm which is based on the nonlinear least-square method,a detailed simulation has been done for a variety of signal model,and use FPGA to realize the algorithm,the design is completed in the Cyclone III series chip EP3C80F780C8,frequency of using 50 MHz,the results show that the system has the characteristics of simple design,h...
