Alternate arm modular multilevel converter energy balancing via overlap onset control

The Journal of Engineering

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[1] Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, Canada;Manitoba Hydro, Winnipeg, Canada;RTDS Technologies, Winnipeg, Canada;

关键词: EMTP;    power system simulation;    power system CAD;    zero current switching;    HVDC power convertors;    voltage control;    switching convertors;    power capacitors;    overlap onset control;    AAC commutation;    output voltage quality;    steady-state converter models;    capacitor voltage regulation method;    AAC operating range;    alternate arm modular multilevel converter;    OOCs;    energy balancing;    submodule voltage regulation;    zero-current switching controls;    electromagnetic transient simulation;    PSCAD-EMTDC;   

DOI  :  10.1049/joe.2018.8787

来源: publisher

【 摘 要 】

This study introduces a novel method called overlap onset control (OOC) to balance and maintain alternate arm modular multilevel converter (AAC) submodule capacitor voltages at their desired value. OOC performs zero-current switching and controls the timing of AAC commutation to regulate submodule voltages while retaining output voltage quality. The study uses steady-state converter models to develop the mathematical foundations behind the proposed capacitor voltage regulation method and then presents electromagnetic transient simulation results in PSCAD/EMTDC to demonstrate OOC's ability to extend the AAC operating range.

【 授权许可】

CC BY