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Passivity‐based control of multilevel cascade inverters: High‐performance with reduced switching frequency
Author(s) -
NoriegaPineda D.,
EspinosaPérez G.,
Cárdenas V.,
AlvarezRamírez J.
Publication year - 2010
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.1489
Subject(s) - cascade , control theory (sociology) , passivity , total harmonic distortion , pulse width modulation , computer science , controller (irrigation) , waveform , voltage , electronic engineering , engineering , control (management) , agronomy , electrical engineering , artificial intelligence , chemical engineering , biology
Abstract This paper approaches the control problem of (buck‐type) single‐phase multilevel cascade inverters. The main pursued objective is the generation of an output voltage waveform with very low harmonic distortion under reduced switching frequency operation. For developing the proposed controller a pulsewidth modulation‐based design is first considered, in order to obtain a continuous time control law, to later on, using quantization arguments, modify it to achieve the reduced switching frequency. Owing to its proved capacity for generating high‐performance circuit responses, in the high‐frequency step design a passivity‐based approach is followed while for the low‐frequency one a hysteresis‐type scheme is introduced. The usefulness of the scheme is validated via numerical simulations comparing the proposed scheme with a classical PWM‐based design. Copyright © 2009 John Wiley & Sons, Ltd.