Posts Tagged ‘sunny boy 3000’

15 February

Dramatic Move In Solar Inverter Technology

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Dear Friends, Visitors/Viewers/Readers,

Just spent part of the day learning about Solar Edge’s (NASDAQ: SEDG) HD Wave Inverter Technology. This novel power conversion topology may potentially represent one of the most significant advancements in solar technology in the past 20 years. Inverters of a solar energy system converts the solar power into usable energy and its functionality is determined by the size, reliability, and efficiency.

To borrow part of the wikipedia explanation (in Italics): A solar inverter, or PV inverter, or Solar converter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical BOS–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solarinverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.


To have a better understanding of how the new HD Wave Inverter Technology differs from the traditional systems, let’s take a look at the internal view of a traditional solar inverter, with many large capacitors (blue cylinders seen in the photo below) used to store energy briefly and improve the output waveform (diagram below The Guts of the Sunny Boy 3000 inverter) . The new HD Wave Inverter technology eliminates the need for the electrolytic capacitors. It also uses less magnetics and fewer cooling components, smaller, lighter, with higher efficiency, and greater reliability.

The guts of the Sunny Boy 3000 inverter. Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to store energy briefly and improve the output waveform. Russell Neches - http://www.flickr.com/photos/rneches/2541181118/

The guts of the Sunny Boy 3000 inverter. Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to store energy briefly and improve the output waveform.
Russell Neches – http://www.flickr.com/photos/rneches/2541181118/

Square waveform with fundamental sine wave component, 3rd harmonic and 5th harmonic (Source:

Square waveform with fundamental sine wave component, 3rd harmonic and 5th harmonic

Most of the reports I’ve come across discussed the space and weight that will be reduced as a result of replacing those traditional large capacitors (blue cylinders in photos above). In reality, it is even more critical the fact that the replacement by the new HD wave  technology (thin film technology) means much lower chance of failure and may potentially allow the inverter to last as long as the complete solar system itself. Keep in mind that, now, most of the solar panels have warranty period of about 25 years, batteries typically have limited warranties of 5-10 years, and inverters have coverage of 5-10 years. So, if one takes all into consideration (longevity as well as the reduction of space, weight, and transport cost, etc.), this new HD Wave Inverter technology may potentially massively (greater than 50%) reduce the cost of inverter and overall solar system.

This is a perfect example of why cost of solar systems may continue to drop despite the fact that much had already occurred (cost of solar had already dropped tremendously these past 5 years). So, let the growing demand of solar to continue. We are ready for a sunny world!

Gathered, written, & posted by sunisthefuture-Susan Sun Nunamaker

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