Measured performance of a 1.72kW rooftop grid connected photovoltaic system in Ireland

Ayompe, Lacour; Duffy, Aidan; McCormack, Sarah; Conlon, Michael

doi:10.1016/j.enconman.2010.08.007

Cited by 400 publications

(216 citation statements)

References 16 publications

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“…The performance ratio (PR) has been calculated by PR = (YF/YR) [23,24,26]. The instantaneous inverter efficiency has been calculated as ηinv = PAC/PDC × 100% [27].…”

Section: Resultsmentioning

confidence: 99%

Performance Analysis of a Grid-connected High Concentrating Photovoltaic System under Practical Operation Conditions

Chen

et al. 2016

Energies

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High concentrating photovoltaic (HCPV) is a promising technique for the practical commercial utilization of solar energy. However, the performance of a HCPV system is significantly influenced by environmental parameters such as solar direct normal irradiance (DNI) level and environmental temperature. This paper analyzes the performance of a 9 kW p grid-connected HCPV system in Kunming (Yunnan, China), during practical field operations over an entire year, and discusses how the environmental parameters influence the performance from both the energy conversion and power inversion perspective. Large variations in the performance of the HCPV system have been observed for different months, due to the respective changes in the environmental parameters. The DNI level has been found to be a dominant parameter that mainly determines the amount of energy production as well as the performance ratio of the HCPV system. The environmental temperature and wind velocity have less influence on the system performance ratio than expected. Based on the performance of the present HCPV system, a quantified correlation between the output power and the direct normal irradiance has been derived, which provides guidelines for both the cogent application and the modeling of HCPV techniques for grid-connected power generation.

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“…The performance ratio (PR) has been calculated by PR = (YF/YR) [23,24,26]. The instantaneous inverter efficiency has been calculated as ηinv = PAC/PDC × 100% [27].…”

Section: Resultsmentioning

confidence: 99%

Performance Analysis of a Grid-connected High Concentrating Photovoltaic System under Practical Operation Conditions

Chen

et al. 2016

Energies

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“…In this manner, the battery capacity was altered with respect to: maximum daily load demand, days of autonomy, Depth of Discharge (DOD), efficiency and voltage level. The days of autonomy which accounted for the number of the days that the storage batteries need to accommodate the load, were calculated based on Peak Sunshine Hours (PSH) of 2.83 hours for a typical day in Dublin (Ayompe, et al, 2011). Thus, the selected lead acid batteries were settled to the capacity value of ~ 390-400 Ah as advised by the battery suppliers., with 40% DOD and 85% efficiency and a voltage level similar to voltage level of LEVs Trojan Lead acid batteries, i.e., 8 batteries with at 6 volts-260 Ah.…”

Section: Battery Energy Storage System (Bess) Design Optionmentioning

confidence: 99%

The Battery Energy Storage System (bess) Design Option for On-Campus Photovoltaic Charging Station (PV-CS)

Esfandyari¹,

Norton²,

Conlon³

et al. 2016

Proceedings of the ISES Solar World Congress 2015

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As the application of Light weight Electric Vehicles (LEVs) increase in communities, Dublin Institute of Technology (DIT) uses these small vehicles for short distance journeys around its 78 acre campus of "Grangegorman" located in inner Dublin city, Ireland. This paper presents an introduction to the campus Photovoltaic Charging Station (PV-CS) that generates clean electricity from the sun and charges the LEVs batteries which can lead to reduction of CO2 emissions, along with fulfillment of national and international green sustainability targets. Based on the evaluation of possible options for PV-CS design, the optimal design configuration was chosen as a "Battery Energy Storage System (BESS)". The PV generated electricity that is stored in battery banks will serve as the primary source for charging the campus vehicles, with any surplus demand being met by the utility grid. Batteries have been included in the design due to intermittent nature of Irish sunshine and the charge time requirements of campus load. This paper concentrates on the detailed sizing of the BESS via two approaches: BESS with DC generation and BESS with LEV load demand. In the first approach the outputs were normalized and grouped into specified generation categories in MATLAB. To establish the accurate BESS capacity the load demand variations of the LEVs were monitored. Based on DC generation and demand profile, the optimal capacity of BESS was chosen to be in the range of 6-8 kWh, which can accommodate up to 6 LEVs.

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“…The output of a 1.72 kW rooftop grid connected PV system in Ireland was recorded and analyzed to evaluate the annual final yield, performance ratio, PV module efficiency, system efficiency, and system different losses [8]. The results of performance indicators evaluated at this site were compared with the results at different sites in Europe and shown superiority among others only in reference yield where its value was found quite below the average.…”

Section: Introductionmentioning

confidence: 99%

“…It is the actual net energy output divided by the maximum installed power capacity of the PV array and has the unit (kWh/kW c ), thus [8,14,16]:…”

mentioning

confidence: 99%

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Long Term Assessment of a Grid Connected Solar PV System in Sydney

Odeh¹

2016

JEPE

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This paper assesses 4 years of operation of a 1.75 kW roof top solar PV system installed in a Sydney suburban house. The system consists of 10 PV panels, a DC/AC inverter, and a grid connected gross meter. Solar electricity delivered to grid is verified with the results from a computer simulation package (PVSYST) by adopting the installed component specifications, operation conditions, and weather data of the site. The results show high consistency between the values of energy delivered to the grid measured by the energy company and the energy estimated by system simulation. New system performance indicator is developed and called the optimum performance compliance ratio (P CR ). It is a measure of the compliance of the output of the designed PV system with the output which would be produced by the same system with a solar tracker. This indicator provides system designers, contractors and energy providers with the actual capacity of the system that they can offer the end-users.

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Measured performance of a 1.72kW rooftop grid connected photovoltaic system in Ireland

Cited by 400 publications

References 16 publications

Performance Analysis of a Grid-connected High Concentrating Photovoltaic System under Practical Operation Conditions

Performance Analysis of a Grid-connected High Concentrating Photovoltaic System under Practical Operation Conditions

The Battery Energy Storage System (bess) Design Option for On-Campus Photovoltaic Charging Station (PV-CS)

Long Term Assessment of a Grid Connected Solar PV System in Sydney

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