A New Method of Frequency Tracking
نویسنده
چکیده
In this paper a new method of frequency tracking based on modified adaptive notch filter is proposed to solve the problem of dynamic frequency tracking of low capacity power system, the ANF equations is discretizated, the influence of the ANF parameters on frequency tracking is analyzed, the band-pass pre-filter and the low-pass post-filter are applied. With applying iterative updates synchronous with sampling cycle, the modified ANF tracks the frequency of a power system and approaches the signal frequency quickly and precisely. The simulation results demonstrate that the method is characterized of good frequency tracking, static and transient performances and immunities to harmonics, noises, and dc current component as well.
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