Randomized Modulation in Power Electronic Converters
نویسندگان
چکیده
This article reviews analytical results and practical experience with randomized modulation in power electronic converters. After providing a brief overview of power electronics and of relevant switching patterns, we present performance specifications for converters (in terms of electromagnetic interference, vibrations and acoustic noise), and classify various randomized switching schemes. We review the most directly related references next, and introduce the mathematical objects of primary interest—averaged autocorrelation and power spectrum. We then list some results for the (simpler) case of stationary modulation and consider in detail the more general case of randomized switching based on Markov chains. Our aim is twofold—to present results important for practice and to establish connections with several areas of applied probability. Finally, we consider the synthesis task for the two cases of randomized modulation, followed by brief conclusions.
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