New modulation scheme for bidirectional qZS modular multi-level converters

The Journal of Engineering

Christian Klumpner¹  Fatma A. Khera¹  Pat W. Wheeler¹ 

[1] University of Nottingham;

关键词: PWM power convertors;    electric current control;    switching convertors;    harmonics suppression;    new modulation scheme;    dedicated modulation scheme;    quasiZ-source modular multilevel converter;    operation principle;    suitable pulse-width modulation method;    modulation index;    qZS capacitance;    bidirectional qZS modular multilevel converters;   

DOI  :  10.1049/joe.2018.8020

来源: DOAJ

【 摘 要 】

This study proposes a dedicated modulation scheme for a bidirectional quasi-Z-source (qZS) modular multi-level converter. The operation principle and a suitable pulse-width modulation method are proposed. The relation between the modulation index and shoot-through duty ratio is derived. A formula for calculating the required value of qZS capacitance is given. The simulation results presented in the study validate the operation and the performance of the proposed topology.

【 授权许可】

Unknown