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: 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 [...]

Grid-tie inverters – How do they operate?

By |2017-11-20T16:21:55+05:30November 5th, 2014|

Inverters take DC power and invert it to AC power so it can be fed into the electric utility company grid. The grid tie inverter must synchronize its frequency with that of the grid (e.g. 50 or 60 Hz)  and limit the voltage to no higher than the grid voltage. A high-quality modern Grid Tie inverter [...]

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. [...]

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