Improved PWM-based sinewave generation : example of the impedanceAbdullayev, Anar; Annus, Paul; Krivošei, Andrei; Metshein, Margus; Märtens, Olev; Rist, MarekAutomatic control and computer sciences2023 / p. 449-458 https://doi.org/10.3103/S0146411623050024