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March 2020

Li-ion Batteries

By |2020-03-21T15:34:08+05:30March 21st, 2020|

As solar microgrids projects are getting more and more popular in the islands and mountain regions, they are also gaining popularity in places close to the city. Microgrids have several advantages associated to it. Low cost on infrastructure, more reliability, harnessing #energy locally. One reason in the popularity of these projects is li-ion batteries with compatible [...]

October 2016

Solar Rooftop Power Policy Changes in Karnataka

By |2017-08-25T18:19:11+05:30October 3rd, 2016|

Giving the residents of Karnataka a chance to self consume the Solar power they installed. KERC came up with few changes in their existing Solar Power policy for rooftop. The Hon’ble KERC vide order dtd: S/03/1 dtd: 19.09.2016 has issued Modification to the order 02.05.2016 in respect of determination of tariff and other norms for [...]

November 2014

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: https://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 [...]

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 [...]

September 2014

What is “Maximum Power”?

By |2018-01-17T18:20:57+05:30September 9th, 2014|

Let's take an energy source like a battery or a PV module. When you draw no current from it, the voltage at it's terminals is called it's open-circuit voltage. When you connect any electrical load to it, current flows through it and it's terminal voltage decreases because some power is  wasted by it's internal resistance. [...]

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. [...]