Open AccessHarmonics and unbalanced load compensation by a modular multilevel cascaded converter active power conditioner
Author(s) -
Huang Han,
Oghorada O.J.K.,
Zhang Li,
Chong B.V.P.
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8144
Subject(s) - rectifier (neural networks) , ac power , total harmonic distortion , harmonics , modular design , capacitor , control theory (sociology) , electronic engineering , power conditioner , controller (irrigation) , computer science , power factor , voltage , engineering , electrical engineering , control (management) , agronomy , stochastic neural network , machine learning , artificial intelligence , recurrent neural network , artificial neural network , biology , operating system
This paper presents a novel control scheme for a modular multilevel cascaded converter (MMCC) functioning as an active power conditioner (APC) to control the reactive power, eliminate the current harmonics, and compensate unbalanced load current simultaneously. This combines a modified predictive current controller with the inter‐cluster and intra‐cluster voltage balance control for MMCC sub‐module capacitors. Simulation studies of this MMCC‐APC for a power network containing both an unbalanced thyristor controlled rectifier and a reactive load are performed and results verifying its performance under varying degrees of load current distortion measured by THD levels are presented.