Harmonics Compensation in High Frequency Range of Active Power Filter with SiC-MOSFET Inverter in Digital Control System

2018 ◽  
Author(s):  
Shin-ichi Hamasaki ◽  
Kengo Nakahara ◽  
Mineo Tuji
Keyword(s):  
Control System ◽  
High Frequency ◽  
Digital Control ◽  
Active Power Filter ◽  
Active Power ◽  
High Frequency Range ◽  
Digital Control System ◽  
Frequency Range ◽  
Power Filter ◽  
Harmonics Compensation

DYNAMIC PERFORMANCES OF THE SHUNT ACTIVE POWER FILTER CONTROL SYSTEM

2021 ◽  
Vol 4 (1) ◽  
pp. 47-56
Author(s):  
Sergiy Mykchailovych Peresada ◽  
Sergiy Mykolaiovych Kovbasa ◽  
Yuriy Mykchailovych Zaichenko
Keyword(s):  
Fourier Transform ◽  
Control System ◽  
Fast Fourier Transform ◽  
Active Power Filter ◽  
Active Power ◽  
Active Filter ◽  
Adaptive Observer ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Instantaneous Power

Harmonic pollution of the electrical mains is well known and well-studied phenomena. Active power filter being a powerful tool to meet the requirements of regulatory documents regulating the electricity quality. Despite this fact, practical implementation of the active power filter is still connected with significant difficulties. In particular, existing systems typically use fast Fourier transform methods or instantaneous power theory to estimate the harmonic composition of the mains current. However, the use of fast Fourier transform requires high computing power of the control system, and the implementation of the theory of instantaneous power significantly increases the requirements for the power part of the active filter. The application of another approach - selective compensation of harmonics, makes it possible to reduce computational requirements and significantly simplify the technical implementation of the active filter and at the same time to achieve an acceptable level of distortion compensation. In this paper, the shunt active power filter control system is designed and investigated. Proposed control system consist of selective harmonics observer, feedback-linearizingcurrent controller, dc-link controller and mains voltage observer. Harmonics observer is tuned according to simplified approach, provides selective estimation of the load current harmonics and produce the compensation current reference for the current controller. Nonlinear dc-link voltage controller guarantees decoupled from current compensation process asymptotic regulation of the average dc-link voltage. Mains voltage vector adaptive observer provides magnitude, angular position and frequency estimation. Proposed control system is implemented on digital signal processor TMS320F28335 end verified experimentally. Results of experimental investigations together with results of simulations confirm effectiveness of proposed solution. Developed control system can be used for shunt active filters implementation.

Sign in / Sign up

Export Citation Format

Share Document