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2. Maximum power point tracking - Wikipedia

   en.wikipedia.org/wiki/Maximum_power_point_tracking

   PV solar systems have varying relationships to inverter systems, external grids, battery banks, and other electrical loads. [6] The central problem addressed by MPPT is that the efficiency of power transfer from the solar cell depends on the amount of available sunlight, shading, solar panel temperature and the load's

3. Power optimizer - Wikipedia

   en.wikipedia.org/wiki/Power_optimizer

   A power optimizer is a DC to DC converter technology developed to maximize the energy harvest from solar photovoltaic or wind turbine systems. They do this by individually tuning the performance of the panel or wind turbine through maximum power point tracking, and optionally tuning the output to match the performance of the string inverter (DC to AC inverter).

4. Solar panel - Wikipedia

   en.wikipedia.org/wiki/Solar_panel

   Solar panels are also known as solar cell panels, solar electric panels, or PV modules. Solar panels are usually arranged in groups called arrays or systems . A photovoltaic system consists of one or more solar panels, an inverter that converts DC electricity to alternating current (AC) electricity, and sometimes other components such as ...

5. Nominal power (photovoltaic) - Wikipedia

   en.wikipedia.org/wiki/Nominal_power_(photovoltaic)

   The nominal power of PV devices is measured under standard test conditions (STC), specified in standards such as IEC 61215, IEC 61646 and UL 1703. Specifically, the light intensity is 1000 W/m 2, with a spectrum similar to sunlight hitting the Earth's surface at latitude 35°N in the summer (airmass 1.5), the temperature of the cells being 25 °C.

6. Photovoltaics - Wikipedia

   en.wikipedia.org/wiki/Photovoltaics

   Note that the prices mentioned above are for bare modules, another way of looking at module prices is to include installation costs. In the US, according to the Solar Energy Industries Association, the price of installed rooftop PV modules for homeowners fell from $9.00/W in 2006 to $5.46/W in 2011.

7. The 6 most common headache types — and when to see a doctor

   www.aol.com/6-most-common-headache-types...

   Migraine causes a "severe throbbing or pounding headache with light or sound sensitivity and sometimes nausea," noted Dr. Timothy A. Collins, chief of the Division of Headache and Pain at Duke ...