Power Quality Improvement for Grid-Connected Photovoltaic Panels Using Direct Power Control

2022 ◽  
pp. 107-142
Author(s):  
Arezki Fekik ◽  
Mohamed Lamine Hamida ◽  
Hamza Houassine ◽  
Ahmad Taher Azar ◽  
Nashwa Ahmad Kamal ◽  
...  
Keyword(s):  
Power Control ◽  
Power Quality ◽  
Maximum Power ◽  
Photovoltaic System ◽  
Direct Power ◽  
Direct Power Control ◽  
Power Quality Improvement ◽  
Two Phases ◽  
Bus Voltage ◽  
Power Point

This chapter displays a control strategy for a photovoltaic system (PV) linked to the network with two phases of a PWM converter, where the first phase is a DC-DC converter linked among the photovoltaic source and the DC-AC converter. The second phase is a DC-AC converter linked to the grid. The maximum power point (MPP) is tracked by DC-DC converter, which increases the DC bus voltage. The P&O (perturbation and observation) technique is utilized as a direct current (DC-DC) converter controller to make the PV arrays work at greatest value of power under changing weather conditions. The DC-AC converter transfers the maximum power extracted from the PV cell into the grid. To improve the energy quality produced by the photovoltaic field other than the performance of the pulse width modulation (PWM) inverter, direct power control (DPC) is used to achieve these improvements. The simulation results showed a good performance of the suggested controller. Decoupled power control is achieved successfully, and a good power quality with low harmonic distortion rate (THD) is obtained.

A power quality enhanced grid voltage sensorless predictive direct power control for active front end rectifiers

2017 ◽  
Vol 40 (13) ◽  
pp. 3809-3823 ◽  
Author(s):  
Amit Kumar ◽  
Gopalakrishna Srungavarapu
Keyword(s):  
Power Control ◽  
Power Quality ◽  
Pulse Width Modulation ◽  
Reactive Power ◽  
Research Work ◽  
Switching Frequency ◽  
Direct Power ◽  
Direct Power Control ◽  
Grid Voltage ◽  
Bus Voltage

In this research work, a power quality enhanced grid voltage sensorless deadbeat predictive direct power control (DB-DPC) approach for AC/DC power converters based on latest virtual flux (VF) estimation, DB-DPC and space vector pulse width modulation (SVPWM) is proposed. At first, the grid voltage sensorless technique with switching table based DPC, which is a conventional approach, is discussed and its performance is analyzed under both increase of load as well as decrease of load conditions. Further, the proposed technique performance is also analyzed under the same circumstance and its performance is compared with the traditional method. The proposed technique has numerous advantages over the conventional method such as constant switching frequency, better active and reactive power control, good regulation of dc bus voltage, and enhanced power quality performance. As the proposed approach utilizes VF, DB-PC, and SVPWM techniques, this ensure line voltage sensorless approach, excellent control dynamics and constant switching frequency, respectively. At the end, experimental validation is done to confirm the supremacy of the proposed technique under load varying conditions and has a phenomenal performance under these circumstances.

Direct Power Control of a Three-phase AC-DC Converter for Grid-connected Solar Photovoltaic System

2021 ◽  
Author(s):  
Harshita Tiwari ◽  
Arnab Ghosh ◽  
Pravat Kumar Ray ◽  
Bidyadhar Subudhi ◽  
Ghanim Putrus ◽  
...  
Keyword(s):  
Power Control ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Direct Power ◽  
Direct Power Control ◽  
Three Phase ◽  
Solar Photovoltaic System
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