scholarly journals Power Quality Improvements in Grid-Connected PV System Using Hybrid Technology

2021 ◽  
Vol 19 ◽  
pp. 316-320
Author(s):  
Prasad Kumar Bandahalli Mallappa ◽  
◽  
Herminio Martínez-García ◽  
Guillermo Velasco-Quesada
Keyword(s):  
Power Quality ◽  
Control Strategy ◽  
Hybrid Control ◽  
Technological Development ◽  
Quality Improvements ◽  
Pv System ◽  
Hybrid Technology ◽  
Recent Trends ◽  
Multi Level ◽  
Photo Voltaic

In recent trends, photo-voltaic (PV) is mostly build upon competitive technological development of power quality (PQ) issues. In this article, a hybrid control strategy is implemented with multi-level inverter (MLI) to improve PQ features. As a result, the combination of these controllers with suitable level of MLI could improve the PQ features in a significant way.

Fault Analysis on Photo Voltaic Fed Grid Connected Systems

2014 ◽  
Vol 984-985 ◽  
pp. 1013-1022
Author(s):  
Venkatesan Jamuna ◽  
Natesan Saritha ◽  
N. Nanthini
Keyword(s):  
Power Quality ◽  
Short Circuit ◽  
Reference Signal ◽  
Fault Analysis ◽  
Pv System ◽  
Power Sources ◽  
Three Phase ◽  
Multi Level ◽  
Photo Voltaic ◽  
Grid Side

This work presents a photovoltaic (PV) system, connected to a three phase grid. This work focuses on fault analysis in a grid connected photo-voltaic (PV) energy system. In this work, a three phase Multi-level Inverter connected with an AC grid fed by photovoltaic systems with advanced sine PWM control scheme is presented. The proposed modulation technique uses single reference signal and number of high frequency carrier signals to generate the PWM signal. Now a days, most of the photovoltaic (PV) power sources are connected to the AC grid. When photovoltaic power sources are connected to grid, the grid connected PV system is affected by various power quality issues like voltage sag, voltage swell, voltage disturbances, waveform distortions and three phase fault. One of the main power quality problems is three phase fault and it is appeared in the grid due to short circuit condition between two phases and ground. Fault analysis is carried out by creating a LG, LL, LLL and LLLG fault in the grid connected systems. Grid side voltage, current and power waveforms at the grid side are analysed with fault conditions. A detailed simulation has been done for the Multi-Level Inverter and the validation of system is verified through MATLAB/SIMULINK and the results are presented.

scholarly journals Design and Analysis of the STATCOM Based on Diode Clamped Multilevel Converter Using Model Predictive Current Control Strategy

2021 ◽  
Vol 23 (3) ◽  
pp. 221-228
Author(s):  
Raaed Faleh Hassan ◽  
Suha Sabah Shyaa
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Control Strategy ◽  
Control Algorithm ◽  
Reactive Power ◽  
Current Control ◽  
Multilevel Converter ◽  
Static Synchronous Compensator ◽  
Multi Level ◽  
And Control

In recent decades, multi-level converters have become popular and used in many power systems applications. Compared with conventional converters, multi-level converters contribute to reducing the voltage stress on the switching devices and enhancing the power quality delivered to the load. In this paper, the study of the five-level diode clamped multilevel converter based static synchronous compensator has been accomplished. Model Predictive current control strategy which a type of modern control algorithms was employed for driving the proposed compensator. The suggested five level converter controlled by model predictive current control is firstly examined to verify that this control algorithm is appropriate for achieving the desired performance. Then the proposed converter and control combination is employed and simulated as a static synchronous compensator in distributed power system. Moreover, in order to examine the robustness of this compensator, the load status is suggested to be heavy inductive. Simulation process has been performed using MATLAB – SIMULINK software package. The results show that the implemented configuration (converter and control algorithm) provides high power quality improvement with adequate reactive power compensation.

Grid Interconnected Photo Voltaic System Using Shunt Active Filter for Power Quality Improvement

2018 ◽  
Vol 9 (1) ◽  
pp. 365
Author(s):  
Kala Rathi ◽  
N. Rathina Prabha
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Power Quality ◽  
Renewable Energy Sources ◽  
Voltage Source ◽  
Renewable Energy Resources ◽  
Pv System ◽  
Current Harmonics ◽  
Point Tracking ◽  
Photo Voltaic

Now-a-days, power generation and utilization became more complicated which further affects the economy of a country. The available non-renewable energy sources that supply the demanded power do not consider environmental challenges like global warming and pollution. This leads to the development of power generation based on Renewable Energy Resources (RES). These RES are connected to the grid through power electronic converters which offer countless power quality issues that must be rectified to deliver a quality power to the end users. The proposed work uses a three phase Voltage Source Inverter (VSI) based Shunt Active Power Filter (SAPF) fed by solar Photo Voltaic (PV) system to eliminate current harmonics at the source side of the grid. The output of the PV system is given to a boost converter along with self–lift single-ended primary-inductor converter (SEPIC) for supplying high voltage gain which is accompanied by a Perturb & Observe Maximum Power Point Tracking (MPPT).The main objective of this paper is to eliminate the current harmonics at the grid side using SAPF. Also, the proposed SAPF is used for exporting the power generated from PV to the grid. The overall system performance is validated with a help of MATLAB/SIMULINK.

A Simplified PWM Technique for Isolated DC-DC Converter Fed Switched Capacitor Multi-Level Inverter for Distributed Generation

2017 ◽  
Vol 8 (3) ◽  
pp. 1230
Author(s):  
Mmanjunath BM ◽  
Ashok Kumar D V ◽  
Vijaya Kumar M
Keyword(s):  
Distributed Generation ◽  
Closed Loop ◽  
Low Voltage ◽  
Pi Controller ◽  
Switched Capacitor ◽  
Pv System ◽  
Switching Pattern ◽  
Single Input ◽  
Multi Level ◽  
Photo Voltaic

This paper presents a novel simplied PWM technique to drive switched capacitor type multi-level inverter fed from isolated type DC-DC converter for distributed generation. Distributed generation (DG) is renowned power generation at point of utility with no environmental aects and reduces transmission line losses. Photo-voltaic system is considered as renewable energy source for DG and the low voltage from PV system is boosted to required voltage using an isolated type single-input multi-output (SIMO) DC-DC converter. DC output from isolated SIMO DC-DC converter is fed to switched capacitor type multi-level inverter (SC-MLI) to feed the AC load. Isolated SIMO DC-DC converter apart from boosting the DG output voltage, also eliminates the problem of voltage unbalancing in SC-MLI topology. Closed loop operation of SIMO DC-DC converter employs only single PI controller instead of three controllers was presented in this paper. Modes of operation of SC-MLI and Novel PWM switching pattern was explained. Simulation of proposed system was developed using MATLAB/SIMULINK software. The prototype was developed for the proposed system and hardware results are also shown.

Sign in / Sign up

Export Citation Format

Share Document