November 2014

Assessing Energy Needs for Solar Photo-voltaic System

By |2018-01-17T18:20:56+05:30November 17th, 2014|

Once you decide to go for solar installation on your rooftop, you would need to decide the type of solar rooftop PV system that you want to install. It could be off-grid roof-top or an on-grid solar rooftop PV solar system. For more details on off-grid and on-grid, please refer http://ecosoch.com/power/ For a standalone off-grid solar [...]

Comparing LED’s with other Lights

By |2018-01-17T18:20:56+05:30November 15th, 2014|

It was in year 1800, that first electric light was invented by Humphry Davy. It took next century to make a first commercially available incandescent bulb, a bulb that changed us for ever to nocturnal.  Incandescent’s were soon followed up by Florsecent Lamps, Halogens, HP mercury vapour, Metal halide, High pressure sodium, Low pressure Sodium. [...]

Solar PV String Inverters Vs Central Inverters

By |2018-01-17T18:20:56+05:30November 12th, 2014|

For more details on String inverters and Central Inverters, please visit the earlier post here: http://ecosoch.com/types-of-on-grid-inverters-micro-string-central/ Many-a-times it’s inherently assumed that the bigger the better and cheaper. So ideally speaking the Central Inverter architecture (small number of very large inverters ) are cheaper and have better performance that that of String Inverter Architecture (large number of [...]

Advantages and Disadvantages of Micro Inverters

By |2018-01-17T18:20:56+05:30November 11th, 2014|

  Solar Micro Inverters existed since the advent of the solar PV systems, but then due to high costs associated with manufacturing, it wasn’t popular until recently when a company enphase made the first commercially successful micro inverter M175 in 2008. Since then many established companies like SMA, Power-One (now ABB), Delta and other companies [...]

Types of Solar On Grid inverters – Micro, String & Central

By |2018-01-17T18:20:56+05:30November 8th, 2014|

There are three type of On grid or grid-tie inverters (for details on what is a grid-tie inverter, you can refer to an earlier post  http://goo.gl/0jtWMl). They are 1. Micro inverter 2. String inverter 3. Central inverter. A Micro inverter is connected a single solar panel to  convert its generated DC current to AC current. This [...]

Effect of Temperature on Solar Panel power generation

By |2018-01-17T18:20:56+05:30November 6th, 2014|

It’s a common misconception that the solar panels generate more energy with higher temperatures and less energy with lower temperatures. So the assumption is that we have more power generated in places like Chennai than in Bangalore or for that matter in Himachal Pradesh. But in reality,   solar cells, like in all semiconductors  are [...]

Good news Bangaloreans! Net Metering for solar rooftop is here!

By |2018-01-17T18:20:56+05:30November 4th, 2014|

Long awaited solar reforms in BESCOM have come! The Government of Karnataka has announced the Solar policy 2014-21, grid  connected solar rooftop system under net-metering basis forms an integral part of the policy. The applications are invited from BESCOM consumers who wish to install grid-connected Solar rooftop PV systems under net-metering scheme. […]

What is a on-grid solar system?

By |2018-01-17T18:20:56+05:30November 3rd, 2014|

Electricity generated by a Solar Photo Voltaic (PV) system can be directly consumed by the load itself or can be  stored in a battery bank or can be sent out to the grid. A solar PV system in which the electricity generated can be sent to the grid is called an on-grid system. This type of [...]

October 2014

Connecting Solar Cells in Series

By |2018-01-17T18:20:57+05:30October 6th, 2014|

The image shows India's first (19.04.1975) experimental indigenous satellite, covered in solar panels. A set of solar panels like this is called an array. Each solar panel has several solar modules and each solar module has many solar cells connected in series. If you connect two voltage sources in series, they behave like a single voltage [...]

September 2014

Charge Controllers protect our batteries.

By |2018-01-17T18:20:57+05:30September 8th, 2014|

Our batteries are expensive components of our off-grid solar installations. So it is a good idea to protect them from over-charging and deep discharge. To do this we use charge controllers. Charge controllers sense the voltage on the battery. If it is lower than a given threshold then they disconnect the battery from the load. [...]

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