Single-stage grid interactive PV system using novel fuzzy logic based MPPT with active and reactive power control

2012 ◽  
Author(s):  
Nilesh Shah R. Chudamani ◽  
R. Chudamani
Keyword(s):  
Fuzzy Logic ◽  
Power Control ◽  
Reactive Power ◽  
Single Stage ◽  
Pv System ◽  
Reactive Power Control ◽  
Active And Reactive Power

scholarly journals Reactive Power Control of Single-Stage Three-Phase Photovoltaic System during Grid Faults Using Recurrent Fuzzy Cerebellar Model Articulation Neural Network

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Faa-Jeng Lin ◽  
Kuang-Chin Lu ◽  
Hsuan-Yu Lee
Keyword(s):  
Neural Network ◽  
Power Control ◽  
Reactive Power ◽  
Single Stage ◽  
Pv System ◽  
Reactive Power Control ◽  
Active And Reactive Power ◽  
Three Phase ◽  
Control Scheme ◽  
Reactive Current

This study presents a new active and reactive power control scheme for a single-stage three-phase grid-connected photovoltaic (PV) system during grid faults. The presented PV system utilizes a single-stage three-phase current-controlled voltage-source inverter to achieve the maximum power point tracking (MPPT) control of the PV panel with the function of low voltage ride through (LVRT). Moreover, a formula based on positive sequence voltage for evaluating the percentage of voltage sag is derived to determine the ratio of the injected reactive current to satisfy the LVRT regulations. To reduce the risk of overcurrent during LVRT operation, a current limit is predefined for the injection of reactive current. Furthermore, the control of active and reactive power is designed using a two-dimensional recurrent fuzzy cerebellar model articulation neural network (2D-RFCMANN). In addition, the online learning laws of 2D-RFCMANN are derived according to gradient descent method with varied learning-rate coefficients for network parameters to assure the convergence of the tracking error. Finally, some experimental tests are realized to validate the effectiveness of the proposed control scheme.

scholarly journals Single Stage PLL-less Decoupled Active and Reactive Power Control for Weak Grid Interactive Inverters

2020 ◽  
Vol 53 (2) ◽  
pp. 12390-12395
Author(s):  
Ahmad Khan ◽  
Mohsen Hosseinzadehtaher ◽  
Mohammad B. Shadmand
Keyword(s):  
Power Control ◽  
Reactive Power ◽  
Single Stage ◽  
Reactive Power Control ◽  
Weak Grid ◽  
Active And Reactive Power

scholarly journals Independent Active and Reactive Power Control for Single Stage H8 Transformer-less Solar PV Inverter

2021 ◽  
Author(s):  
D.V.N Ananth ◽  
L.V. Sursh Kumar ◽  
D.A. Tatajee
Keyword(s):  
Power Control ◽  
Reactive Power ◽  
Rapid Development ◽  
Test System ◽  
Active Power ◽  
Single Stage ◽  
Solar Pv ◽  
Reactive Power Control ◽  
Pv Inverter ◽  
Active And Reactive Power

With the rapid development in power electronics technologies and solar photovoltaic (PV) cells, the interest in solar PV cell-based electric power generation and other applications is increasing more incredibly. For low power grid or direct load applications, single-stage solar PV inverters without transformers are advantageous. Based on this concept solar single-stage eight switch H8 based transformerless solar PV inverter is proposed. The objective of the work is to present a control scheme for the H8 inverter to have better power handling capability and for independent active and reactive power control. For this, the test system is studied using MATLAB/ SIMULINK software under three cases (i) constant active power and varying reactive power, (ii) varying active power and constant reactive power, and (iii) varying both active and reactive power. The proposed inverter is compared with single-stage solar PV with two switches boost and six switches inverter topology. It is found that power flow ripples and surges are lesser for proposed H8 than with single-stage topology.

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