scholarly journals A Novel Multilevel Controller

Electronics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1222
Author(s):  
Hanying Gao ◽  
Xiangnan Liu ◽  
Mingjie Ren ◽  
Shuai Feng ◽  
Zhiying Li
Keyword(s):  
Harmonic Distortion ◽  
Active Power Filter ◽  
Voltage Control ◽  
Active Power ◽  
Structure Topology ◽  
Switching Power ◽  
Power Filter ◽  
Capacitor Voltage ◽  
Important Means ◽  
And Control

Active power filter is an important means to improve power quality, and power topology is an important part of active power filter. Therefore, the research on power topology has important practical value. This paper proposes a simple-structure topology that employs eight switching power devices, two capacitors, and eight diodes to realize nine-level voltage output. The proposed topology can effectively reduce the volume and weight of the device and achieve multilevel output. Simultaneously, a compound control strategy, consisting of integrated phase voltage control and cell capacitance voltage control, is proposed for unit voltage equalization control. Finally, taking the three-phase active power filter as the research object, simulation and experimental verification are carried out with the proposed topology. The results show that the proposed topology and control scheme are feasible, and in the case of sudden load change, the fluctuation of capacitor voltage V1 is less than 3 V, the fluctuation of capacitor voltage V2 is less than 1 V, and the THD (Total Harmonic Distortion) of the phase current is well suppressed to 3.84%.

scholarly journals DC‐link capacitor voltage control for single‐phase shunt active power filter with step size error cancellation in self‐charging algorithm

2016 ◽  
Vol 9 (2) ◽  
pp. 323-335 ◽  
Author(s):  
Muhammad Ammirrul Atiqi Mohd Zainuri ◽  
Mohd Amran Mohd Radzi ◽  
Azura Che Soh ◽  
Norman Mariun ◽  
Nasrudin Abd. Rahim
Keyword(s):  
Single Phase ◽  
Active Power Filter ◽  
Voltage Control ◽  
Active Power ◽  
Step Size ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Error Cancellation ◽  
Capacitor Voltage

scholarly journals Seven-Level Active Power Filter Based on a Novel H-Bridge Power Topology Structure

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2997 ◽  
Author(s):  
Gao ◽  
Zhang ◽  
Liu ◽  
Feng ◽  
Ma ◽  
...  
Keyword(s):  
Working Conditions ◽  
Control Strategy ◽  
Active Power Filter ◽  
Active Power ◽  
Working Mechanism ◽  
Power Filter ◽  
Capacitor Voltage ◽  
Power Switches ◽  
Implementation Method ◽  
And Control

This paper proposes a novel seven-level power topology, that increases the number of output levels by using fewer power switches and capacitors compared to the traditional seven-level topology. Moreover, the working mechanism of the proposed topology and its implementation method are given. Furthermore, a two-stage capacitor-voltage equalization control strategy with overall control and independent control is proposed. Finally, the proposed topology is applied to the active power filter system, and simulations and experimental research of two types of working conditions are performed. The results verify the effectiveness and feasibility of the new topology and control strategy.

PI and Fuzzy-Controlled 3-Phase 4-Wire Interleaved Buck Active Power Filter with Shoot-Through Elimination for Power Quality Improvement using RTDS Hardware

2014 ◽  
Vol 15 (2) ◽  
pp. 177-194 ◽  
Author(s):  
Anup Kumar Panda ◽  
Ranjeeta Patel
Keyword(s):  
Control Strategy ◽  
Fuzzy Logic Controller ◽  
Supply Voltage ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Current Harmonics ◽  
Power Filter ◽  
Power Quality Improvement ◽  
Real Time Digital Simulator

Abstract In this paper, shoot-through current elimination DC–AC converter circuit has been presented with the application of active power filter (APF). The intuitive analysis of the shoot-through in the conventional DC–AC converter has been reported first. Interleaved buck (IB) converter is adopted to eliminate the shoot-through current, thereby increasing the reliability of the interleaved buck–based active power filter (IB-APF). The 3-phase 4-wire IB-APF eliminates the current harmonics produced by the load just as a conventional one does and are innately immune to “shoot-through” phenomenon, with the elimination of special protection features required in conventional inverter circuits. A comparison has been made about the compensation capabilities of the IB-APF with the PI and fuzzy logic controller (FLC) used by id–iq control strategy under different supply voltage conditions. The id–iq control strategy used for extracting the three-phase reference current for IB-APF, evaluating their performance here in MATLAB/Simulink environment and also implemented using real-time digital simulator hardware (OPAL-RT hardware). The RTDS result verifies that the total harmonic distortion percentage of the source current can be reduced below 5% according to IEEE-519 standard recommendations on harmonic limits.

Photovoltaic Energy Generation and Control for an Autonomous Shunt Active Power Filter

Smart Grids ◽  
2017 ◽  
pp. 275-309
Author(s):  
Ayman Blorfan ◽  
Damien Flieller ◽  
Patrice Wira ◽  
Guy Sturtzer ◽  
Jean Mercklé
Keyword(s):  
Active Power Filter ◽  
Energy Generation ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Photovoltaic Energy ◽  
Power Filter ◽  
And Control

Application of Adaptive Tabu Search Algorithm in Sinusoidal Fryze Voltage Control based Hybrid Series Active Power Filter

2014 ◽  
Vol 3 (2) ◽  
pp. 59-75
Author(s):  
Saifullah Khalid ◽  
Neeraj Kumar ◽  
V.M. Mishra
Keyword(s):  
Tabu Search ◽  
Search Algorithm ◽  
Load Condition ◽  
Active Power Filter ◽  
Voltage Control ◽  
Active Power ◽  
Control Technique ◽  
Tabu Search Algorithm ◽  
Power Filter ◽  
Non Linear

A novel hybrid series active power filter to eliminate harmonics and compensate reactive power is presented and analyzed. The proposed active compensation technique is based in a hybrid series active filter using adaptive Tabu search (ATS) algorithm in the conventional Sinusoidal Fryze voltage (SFV) control technique. Optimization of the conventional Sinusoidal Fryze voltage control technique has been done using adaptive tabu search algorithm. This paper discusses about the comparative performances of conventional Sinusoidal Fryze voltage control strategy and ATS-optimized controllers. ATS algorithm has been used to obtain the optimum value of Kp and Ki. Analysis of the hybrid series active power filter system under non linear load condition and its impact on the performance of the controllers is evaluated. Effectiveness of the hybrid series active power filter to provide harmonic damping is demonstrated by MATLAB/Simulink results. Total harmonic distortion (THD) demonstrates the practical viability of the controller for hybrid series active power filter to provide harmonic isolation of non-linear loads and to comply with IEEE 519 recommended harmonic standards.

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