Thursday, October 18, 2018
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Planning your own solar system at your roof?

solar system designe

How is a solar system designed, installed, and maintained?

A solar system designed by own is possible. But avoid the risk or injury should involve the consultant or professional contractor. Solar has the electric system so it requires installing by the professional electric licensed contractor.

Major components of the solar system

The solar system has many components and selection of components according to standards, requirements. The solar system has the following major components.

1.) PV module: Used to convert the light in direct current (DC). The various technology of PV module is available and selection of based on requirements.

2.) Solar charge controller: Used for preventing the overcharging the battery and regulate the voltage and current coming from the PV module to battery.

3.) Inverter: Used for convert direct current (DC) coming from module and battery to alternate current (AC) and feed in LT panel as well as the grid.

4.) Battery: Used for store the current to supply the power during unavailability of grid and sunlight.

5.) Accessories: Cables, fuses, MCB or MCCB, surge protection and lightning protection device etc.

Steps for design the solar system

1.) Know about the power demand: The first steps of design the solar system determines the power demands and know about which loads to be supplied by solar.

2.) No. of PV Module: Ones you know requirements of solar system size the can calculate no of the module by this formula: [No. of Modules = Total power requirements (KW) x1000 / Module power (Wp)]

Note: Different size of PV module is available to consider the PV module by comparison of different module make and ratings as per climate and site location.

3.) Inverter selection: Inverter selection depends on the input voltage and current it should be the same as the array rating voltage current.

4.) No. of Battery: should be enough and sufficient for store the energy and supplies during the night or cloudy day. Can calculate no. of battery by this formula: [Battery Capacity (Ah) = (Total Watt-hours per day used x Days of autonomy) / (0.85 x 0.6 x nominal battery voltage)]

[Note: Battery loss considered is 0.85, Depth of discharge is 0.6]

5.) Accessories: the selection of accessories such as cables, Fuses, MCB or MCCB and other protection are as per standard and proper consultation of the electrical contractor.


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