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Methods to estimate the DC wire loss in photovoltaic (PV) systems are proposed. Root-mean-square (RMS) of the irradiance data is first related to wire losses. Then a statistical model is used to characterize the irradiance data for the PV systems. The β-distribution gives reasonable match of the RMS value for the irradiance data. The result is consistent for different geographic locations.
With the advent of increasing energy cost from the grid, need to go were no grid is or having to rely upon no grid, we have seen the emergence of hybrid solutions. With the beginnings of these new solutions, we see different business objectives, customer service expectations, municipal limitations and neighbourhood conditions that vary from carrier, region, site, et cetera. The result is that hybrid...
This paper presents a reconfigurable solar photovoltaic (PV) battery charger. A traditional PV charger either utilizes a DC/DC converter between the PV array and load, or it connects the battery directly to the PV array without any power conversion. Different from these approaches, our proposed PV charger avoids conventional DC/DC converters by using a reconfigurable switch matrix. This switch matrix...
Photovoltaic systems should be managed to produce the maximum power under all operating conditions. The Manager is called Maximum Power Point Tracker MPPT. In this paper, the MPPT manager is attached into each PV cell in order to solve the problems of the PV shadow effect. The ripple correlation control algorithm has been used as the control action of the MPPT. The proposed system borderlines have...
Maximum power point tracking (MPPT) techniques are used in photovoltaic (PV) systems to maximize the PV array output power by tracking continuously the maximum power point (MPP) which depends on panel's temperature and irradiance conditions. The Perturb and Observe (P&O) MPPT algorithm is the most commonly used method due to its ease of implementation. But it has some drawbacks such as the oscillation...
The introduction of photovoltaic (PV) modules in the early 1970's to energize remote telecommunication sites has provided a much needed backbone for communications in far reaching and remote areas of Australia. Whilst accurate analysis of batteries is common, little data is captured on PV modules. Where a “rule of thumb” theory is applied to assessing PV capacity there is an increased risk of critical...
With increasing loads in remote sites of Western Australia, there is an increased need to augment existing solar power systems. Higher loads also increase cooling requirements that translates to greater energy demand (i.e. fans and air conditioning). The upgrade of a pure solar power system requires significant investment and is sometimes considered non-viable due to a lack of space for the batteries...
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