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exceltech’s plug n play micro inverter?!

We’re in Las Vegas this week learning about new products at Renewable Energy World 2009….I’d have to say I’m quite disappointed since there are not many new products at the highly anticipated trade show, although I did run into a “game changing technology” in the works. ExcelTech, traditionally a manufacturer of off-grid inverters is working on a couple products to enter the grid tie inverter market. According to ExcelTech, they have been working on their own version of a grid tie micro-inverter that attaches right to the back of a solar panel, similar an Enphase micro inverter. The demo unit at Excel tech’s booth even had a standard household AC plug that can be connected directly to the gird via a household socket. Very interesting don’t you agree? Although ExcelTech said they have hundreds of these units in the field operating flawlessly, the company not released their micro inverter to the public because they want a solar panel manufacturer to integrate the inverter right into the solar panel so the micro-inverter itself can operate without connecting a DC disconnect to every unit, which is required by NEC code. Do you think ExcelTech can convince a solar panel manufacturer to build in their micro-inverter right into a solar panel? This is some game changing technology, would you not...

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meet the enphase m190 grid tie inverter

Enphase Energy, the manufacturer of the revolutionary micro inverter system has released a new and improved version of the micro inverter called the m190. Enphase recently put out their preliminary datasheet of their newest addition to the Enphase product mix. The m190 is compatible with 60 and 70 cell solar panels and has the following improvements over the m175 and m200 product lines: a wider temperature range the micro inverter can operate in. The enphase m190 can operate in ambient temperatures between -40c to +65C mean time between failures (MTBF) of 365 years, which triples the MTBF rating of the M175/M200 models. According to the company this was verified by testing the micro inverter for 10 million unit hours of operation in the field. The M190 makes installation even easier by reducing the number of cables to manage to one 6′ cable versus two 3′ cables on the M175/M200 models. You thought the M175/M200 was small enough? The new m190 has a 30% smaller footprint than its predecessors. upgraded racking bracket makes it easier and more flexible to install the m190 face up or down and allows for easier cable routing. The Enphase M190 marks a significant milestone in how the micro-inverter is evolving. In my opinion it’s a good sign that Enphase Energy is making continuous improvements with their product because the results are going to be a more a even smaller, easier to install grid tie inverter solution. Check out the preliminary datasheet below. What do you think about the Enphase...

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the simplicity of enphase mirco-inverters

I was on enphase energy’s website reading their case studies today and was amazed by the simplicity of Sreenivas family’s 2.3kW solar electric system using enphase micro-inverters. The system is made up of 13 sharp 175w solar panels which are connected to each other via AC interconnect cables that are already part of the enphase mirco-inverter. 12/3 romex is used through the garage attic from the solar array to a 1-15 amp backfed breaker in a 100 amp main panel. The Sreenivas family case study is a good example of how enphase makes deploying solar panels an easier process by avoiding stringing solar panels which has a direct impact on system complexity and how long it takes to install a solar electric system. The enphase micro-inverter is more then a grid tie inverter, they’re an “inverter solution” since performance monitoring is built into the system and is the only grid tie inverter that can monitor the system down to the individual solar panel. This installation looks quite simple, don’t you agree? What do you think about solar electric systems that use micro-inverters versus a traditional centralized inverter? Enphase Diagram of Sreenivas...

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Say hello to Mirco-Inverters

Buzz going around solar town is there is a new “micro-inverter” on the street made by Enphase. Cool! Before I even go into what an micro-inverter” is lets start off with the basics. An inverter in general coverts the DC (direct current) power produced by solar panels into AC power (alternating current). Basically, AC power is what most of our appliances run on. So, the inverter plays a critical in your solar power system. Traditionally, solar power systems have a series of solar panels connected to an inverter. So if an inverter goes down, that whole series goes down with it. So how is a micro-inverter different? The major difference is instead of having a series of panels connected to one inverter, a mirco-inverter connects to each panel. It means, your system performance will greatly increase because: maximizes the harvesting capabilites of each solar panel in the array. increases the reliability of the solar power system. simplifies the installation process. solar panels performs better in shady conditions, and is resiliant to dirt and bird poop. Awesome innvotation continues in renewable energy industry, people are really thinking of some out of the box soltuions to problems down to the installtion level. The solar power industry is heading to mass adoption like a bullet...

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