Discussion of "A Variable Switching Frequency PWM Technique for Induction Motor Drive to Spread Acoustic Noise Spectrum With Reduced Current Ripple"

2016

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DOI 10.1109/tia.2016.2618298
Data confidence 70 medium
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Abstract

Variable frequency modulations for motor drives that include deterministic, probabilistic (random or randomized), and chaotic pulse width modulation (PWM) are aimed at acoustic noise frequency spectrum spreading [1]-[4]. The discussed paper [1] suggests a deterministic variable frequency PWM method for induction motor drives that is about a deterministic variation of a switching period (subcycle) of a conventional PWM.