Multilevel converters: Topologies, modulation and control
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2016-01-01
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Institution of Engineering and Technology
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Abstract
This chapter has introduced the main multilevel converter topologies, i.e. the DCC, the FC, and the CHB converters, as well as the MMC, which is a recent topology that is expected to be widely applied in HVDC transmission systems. After classifying the modulation techniques, the basics of SVM and CB-PWM for multilevel converters have been presented. In the case of SVM, a modulation algorithm prone to be implemented in a digital processor has been applied to the three-level DCC (or NPC converter) and described in detail. A capacitor voltage balancing strategy based on selecting proper redundant vectors has also been embedded in the modulation. In the case of implementing a CB-PWM, several carrier signals are required for multilevel converters. Different carrier dispositions have been shown, including PS-PWM and LS-PWM. CB-PWM is especially interesting for modular converter topologies, such as the CHB converter and the MMC.
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Publisher Copyright: © The Institution of Engineering and Technology 2016.
Keywords
Capacitor voltage balancing strategy , CB-PWM , Digital processor , FC converter , HVDC power transmission CHB converter , HVDC transmission system , LS-PWM , MMC , Modulation technique , Multilevel converter topology , NPC converter , PS-PWM , PWM power convertors , SVM , Three-level DCC converter , General Engineering , SDG 7 - Affordable and Clean Energy
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Pou , J , Ceballos , S & Konstantinou , G 2016 , Multilevel converters : Topologies, modulation and control . in Control Circuits in Power Electronics : Practical Issues in Design and Implementation . Institution of Engineering and Technology , pp. 267-306 . https://doi.org/10.1049/PBPO072E_ch10