Real-time control of hybrid active power filter using conservative power theory in industrial power system

Industrial power system consists of several linear and non-linear loads. The proliferation of non-linear loads in power system causes the power system harmonics. Passive filters (PFs) are one of the ancient solutions to mitigate the harmonics. Some of the industrial power systems use PFs for harmoni...

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Bibliographic Details
Published in:IET power electronics 2017-02, Vol.10 (2), p.196-207
Main Authors: Oruganti, Venkata Subrahmanya Raghavendra Varaprasad, Bubshait, Abdullah Saad, Dhanikonda, Venkata Sesha Samba Siva Sarma, Simões, Marcelo Godoy
Format: Article
Language:English
Subjects:
Compensation
conservative power theory
Control systems
Controllers
CPT
dynamic load variation
electric current control
HAPF RT control
harmonic compensation
harmonic mitigation
harmonic reference generator
Harmonics
hybrid active power filter
industrial power system
linear load
Mathematical models
Matlab
Matlab‐Simulink environment
nonlinear load proliferation
Nonlinearity
OPAL‐RT‐based RT simulator
passive filter
passive filters
power generation control
power harmonic filters
power system harmonics
reactive power
Real time
Type‐II current controller
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Summary:Industrial power system consists of several linear and non-linear loads. The proliferation of non-linear loads in power system causes the power system harmonics. Passive filters (PFs) are one of the ancient solutions to mitigate the harmonics. Some of the industrial power systems use PFs for harmonic compensation. Owing to dynamic load variation, the PFs are not the appropriate solution for harmonic compensation. To improve the system performance with existing PFs, this study presents the conservative power theory (CPT)-based hybrid active power filter (HAPF) with Type-II current controller for compensation of harmonics, reactive power and also the unbalance caused by different linear and non-linear loads of an industrial power system. In this system, the CPT is used as a harmonic reference generator and Type-II controller is designed for current control operation. The proposed HAPF overcomes the drawbacks of PFs and performs the compensation tasks effectively. The industrial power system with the proposed HAPF is modelled in MATLAB/Simulink environment and implemented in the real-time (RT) using OPAL-RT-based RT simulator. The RT results are in compliance with IEEE 519-2014 standard.
ISSN:1755-4535
1755-4543
1755-4543
DOI:10.1049/iet-pel.2015.1005