Optimal energy management for a grid connected PV-battery system

Chakir, Asmae; Tabaa, Mohamed; Moutaouakkil, Fouad; Medromi, Hicham; Julien-Salame, Maya; Dandache, Abbas; Alami, Karim

doi:10.1016/j.egyr.2019.10.040

Cited by 62 publications

(25 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The inverter's power is turned off until the batteries have been recharged to a suitable level. [45,46].…”

Section: Discussionmentioning

confidence: 99%

“…It can be observed from Figure 5 that λ needs to be maintained at an optimal value for all wind speeds-to run the WECS with maximum C p value [34][35][36][37][38][39][40]. This can be done only using variable speed operation with DFIG or PMSG where the rotor speed of the turbine can be adjusted at variable wind speed [9,[41][42][43][44][45]. Pitch angle control is usually used in large scale wind systems to fix the output power of the wind turbines at a specific limit, especially at high wind speed [28,46].…”

Section: Wind Turbine Characteristicsmentioning

confidence: 99%

See 1 more Smart Citation

Modelling, Design and Control of a Standalone Hybrid PV-Wind Micro-Grid System

Al-Quraan

Al-Qaisi

2021

Energies

View full text Add to dashboard Cite

The problem of electrical power delivery is a common problem, especially in remote areas where electrical networks are difficult to reach. One of the ways that is used to overcome this problem is the use of networks separated from the electrical system through which it is possible to supply electrical energy to remote areas. These networks are called standalone microgrid systems. In this paper, a standalone micro-grid system consisting of a Photovoltaic (PV) and Wind Energy Conversion System (WECS) based Permanent Magnet Synchronous Generator (PMSG) is being designed and controlled. Fuzzy logic-based Maximum Power Point Tracking (MPPT) is being applied to a boost converter to control and extract the maximum power available for the PV system. The control system is designed to deliver the required energy to a specific load, in all scenarios. The excess energy generated by the PV panel is used to charge the batteries when the energy generated by the PV panel exceeds the energy required by the load. When the electricity generated by the PV panels is insufficient to meet the load’s demands, the extra power is extracted from the charged batteries. In addition, the controller protects the battery banks in all conditions, including normal, overcharging, and overdischarging conditions. The controller should handle each case correctly. Under normal operation conditions (20% < State of Charge (SOC) < 80%), the controller functions as expected, regardless of the battery’s state of charge. When the SOC reaches 80%, a specific command is delivered, which shuts off the PV panel and the wind turbine. The PV panel and wind turbine cannot be connected until the SOC falls below a safe margin value of 75% in this controller. When the SOC goes below 20%, other commands are sent out to turn off the inverter and disconnect the loads. The electricity to the inverter is turned off until the batteries are charged again to a suitable value.

show abstract

“…The inverter's power is turned off until the batteries have been recharged to a suitable level. [45,46].…”

Section: Discussionmentioning

confidence: 99%

Section: Wind Turbine Characteristicsmentioning

confidence: 99%

Modelling, Design and Control of a Standalone Hybrid PV-Wind Micro-Grid System

Al-Quraan

Al-Qaisi

2021

Energies

View full text Add to dashboard Cite

show abstract

“…The load may additionally be powered through auxiliary electricity sources like diesel generator or aero generator throughout the night hours or cloudy weather. 31 Figure 1 depicts schematic of a grid-connected PV system. Such systems can operate even without any involvement of storage devices.…”

Section: System Designmentioning

confidence: 99%

“…Consumers may require different amount of power at different time intervals of the day. The load may additionally be powered through auxiliary electricity sources like diesel generator or aero generator throughout the night hours or cloudy weather 31 …”

Section: System Designmentioning

confidence: 99%

Performance evaluation and degradation analysis of different photovoltaic technologies under arid conditions

Chawla

Tikkiwal

2020

Int J Energy Res

View full text Add to dashboard Cite

The world has witnessed a substantial upsurge in energy demand in the recent decades, which has concurrently led to increased environmental contamination due to the use of carbon-based fuels to meet this demand. The increased pollution levels across the globe combined with the rapid depletion of these carbon-based non-renewable sources of energy has forced nations to adopt cleaner sources such as solar energy, wind energy, biomass etc. for meeting energy requirements. Utilities and power transmission companies, in several countries, have begun installation and operation of large-scale solar energy projects in order to augment the present electricity generation capacity. India has a tremendous potential for solar energy as 58% of the total land area receives an average solar insolation above 5 kWh/m 2 /day, annually. However, PV installations require proper economic formulation and technical modelling of PV plants. The study presented in this paper investigates the feasibility of installing a 1 MW grid-connected PV system in the arid climatic conditions of India. Four different regions of the Thar Desert: Barmer, Jodhpur, Jaisalmer, and Kalan Ghat have been considered for the study. A comparative study has been laid out based on energy yields, losses, and degradation of various module technologies namely Mono-Si, Poly-Si, CdTe, and CIS. The performance of the PV systems has been evaluated both in the fixed-tilt and variable-tilt configurations. Simulation results show that the daily yield in winter months ranges between 5.8 and 6.9 MWh/day whereas, during summer, it ranges between 5 and 7.1 MWh/day. The study suggests that CIS module is expected to produce highest annual energy yield of 2471 MWh with a PR of 86.1%, in the variable-tilt configuration for the Jaisalmer region. Annual energy loss due to temperature is expected to be highest for Mono-Si technology (14.4%) in the variable-tilt configuration and lowest for CIS technology (9.4%) in the fixed-tilt configuation. Moreover, mismatch losses for all the four technologies lie in the range of 0.1-1.1%.

show abstract

“…Solar energy has some features which have caused studies in this field to be attractive. The sun is one of the most abundant energy sources that do not pollute the environment [1]- [3]. Using solar energy can directly affect on the reduction of carbon footprint on the earth and the changing of future climate.…”

Section: Introductionmentioning

confidence: 99%