makes the study and the determina-tion of suitable modulation strategies a hard task. The modulationof switch function in frequency converters is more complex than inan AC–AC chopper and other applications using this chopper. Thelargest number of modulation techniques has been proposed for thematrix converter. Moreover, the proposed modulation techniquesare implemented in the other frequency converters described inthis article. A review of the well-known modulation techniquesused in the MC