Comparison of Different Sampled PWM Strategies Applied to High- Speed Drives: A Predictive Time-Frequency Analysis

Andre De Andrade, Lakdar Sadi-Haddad, Ramdane Lateb, Joaquim Da Silva

2023 IEEE WORKSHOP ON ELECTRICAL MACHINES DESIGN, CONTROL AND DIAGNOSIS, WEMDCD（2023）

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Abstract

Using the Predictive Time-Frequency Analysis, several different pulse width modulation (PWM) techniques are studied with naturally and regular sampled PWM. This study observes a dynamic trajectory modelling an electric drive chain with a constant acceleration of the machine to its nominal speed. This global method allows to observe different phenomena at the same time (resonance, sub-harmonics, and harmonic distortion) specific to the trajectory. The Predictive Time-Frequency Analysis applied to Electric Drive Systems (PreTiFEDS) highlights the reasons why a naturally sampled PWM is not necessarily the most appropriate when it comes to using other PWM strategies for high-speed applications.

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Key words

Fourier Transform,Spectrogram,Time-Frequency Analysis,Permanent Magnet Machine,Pulse Width Modulation,Resonance,Space Vector Pulse Width Modulation,Variable Frequency Drive,Voltage Source Inverter

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