Open AccessSupport vector regression‐based distortion compensator for three‐phase DC–AC boost‐inverters: analysis and experiments
Author(s) -
Eskandari Bahman,
Tavakoli Bina Mohammad
Publication year - 2014
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2013.0046
Subject(s) - distortion (music) , control theory (sociology) , support vector machine , total harmonic distortion , three phase , computer science , electronic engineering , voltage , engineering , artificial intelligence , electrical engineering , control (management) , amplifier , cmos
Distortion existence in output of power electronics DC–AC converters is inevitable. The amount of distortion in boost‐type converters is higher than other types, which is difficult to mitigate. This study introduces a new modification of three‐phase boost‐inverters in order to mitigate excessive distortions. The compensation process is modified to take advantage of non‐linear operation of boost converters and a differential connection of DC–DC converters is employed. Considering DC–AC boost‐inverter, it is shown that the outcomes are usually different from the expected desired waveforms. This is because of the non‐linear structure of the switching converter. Thus, a compensation method based on support vector regression (SVR) is proposed in a way that the desired waveforms appear at the output of the converter. Analysis and simulations are first introduced for defining the limitations of a boost‐inverter because of the non‐linear structure. Then, the simulated SVR applied to the external‐layer control, comparing the effects of the suggested algorithm with those of the uncompensated cases. Furthermore, practical verification is taken place on an implemented 500 VA boost‐inverter in order to confirm the proposed technique as well as theoretical analysis and simulations. The proposal is particularly useful when considering high penetration of inverter‐based interfaces for renewable energy sources such as solar panels.