Study of Morlet Wavelet for Singularity Signal
Guan Li-xing · IEEE Transactions on Power Electronics · 2004
Morlet continuous Wavelet was applied to process and analyze singularity signal caused by high order harmonic of inverter. From 1 to 30 scales, the outputted signals of inverter and measurement system for motor rotor speed were transformed with Morlet Wavelet separately. Interference signal was effectively extracted and identified, and some anti-interference measures were implemented on inverter and speed measurement system, the interference signal caused by high order harmonic was successfully eliminated.