Analytic Mode Decomposition and Windowed Three-Point Interpolated Chirp-Z Transform for Voltage Flicker Components Detection

•A new voltage flicker envelope extraction method based on analytic mode without the analog filter.•A windowed three-point interpolated Chirp-Z transform method that can analyze voltage flicker components, enhancing the frequency resolution and measurement accuracy.•A voltage flicker parameter detection system is developed and implemented in a PXI platform, using LabVIEW.