We just got a lead on this new product by National Semiconductor. These power optimizers allow you to get the maximum performance out of your PV solar strings.Today’s photovoltaic arrays are defined as strings of series-connected PV panels, which are then paralleled together and converted to AC power through an inverter. The key challenge of these arrays is how a small amount of real-world mismatch with just a few of the PV panels can cut the power output of the entire array in half. This mismatch can come in the form of shading (e.g. trees, chimneys, overhead power lines, bird droppings, handrails, etc.), panel-to-panel mismatch, different panel orientations and tilts, or different string lengths.
As a result of these mismatches, system integrators are often forced to compromise their installation by various methods, such as reducing the size of the array to avoid shade, accepting a lower energy output per square meter, or adding extra panels in a different part of the array, all of which cost money, efficiency, and/or aesthetics for the system owner.
To maximize the energy output of each solar PV panel in the array, National Semiconductor has developed SolarMagic technology, which enables each solar panel to produce the maximum energy regardless of whether other panels in the array are under-performing due to mismatch. SolarMagic technology monitors and maximizes the energy harvest of each individual PV panel through advanced algorithms combined with leading-edge mixed-signal technology, thereby recouping up to 57% of the lost energy due to mismatches.
The SolarMagic power optimizer is designed to be installed quickly and easily within the traditional architecture of a solar array. Each power optimizer comes with a universal mounting bracket for easy attachment to a racking system. The output wires of each solar panel are simply series-connected to a power optimizer (positive wire to positive wire, negative to negative), with the power optimizer output wires correspondingly connecting into the next solar panel’s power optimizer.
The blocking diode is designed to block reverse current flow by
allowing current to flow in one direction and disconnect the circuit if current attempts to flow in the opposite direction. Due to the interaction, strings with SolarMagic power optimizers installed – also referred to as assisted strings – will have varying voltage levels during energy production hours.
All SolarMagic power optimizers come with a limited 20-year warranty, thereby ensuring the reliability of the panel-mounted electronics matches the panels themselves.
See Spec Sheet
You can order these items on-line by going to my solar site at my
Solar-Catalog.com/pv_opt.html or go to Solar-Catalog.com and view all the Solar, Wind, and Hydro energy products I have available.
My 2010 on-line catalog is now available for your viewing. This year I have added more products as well as product and design information. Ordering on-line makes it easy for you to order what you need 24/7.
Until next time, I hope that this has been helpful. Starting in 2010 I will attempt to feature an energy product once a week and do an informational article every month. At least that is my intent. I will also attempt to be more regular on my Woodcarving Blog as well. With that said, lets hope that I am not promising too much. If I am, I will let you know and reschedule my plans.
Terry R. Wolff
Solar panels give us renewable energy. We never have to worry about running out of sunlight or using it all up. The sun is a consistent power source meaning it's always going to be there every day. Many solar systems are very easy to install and require no wiring.
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