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Off grid solar power system

            Off grid solar power system is a system transform energy from the sunlight to DC electricity and stored in batteries then convert into electricity 220VAC/50Hz for using AC electrical equipment. This system is suitable for places without electricity as remote, isolated islands. Power obtained is dependent on the number of solar cells and the amount of sunlight at the installation place. Normal power of the system will be represented by the average value kWh / year or kWh / day and the system's power supply every day is different depending on intensity of the sunlight.

I.  MAIN COMPONENTS:

1.    Solar panel: he function to convert sunlight into DC current. It was found that the current power of the system is dependent on the total capacity of solar panels intensity of the sunlight. Long life of solar panel from 40 to 50 years and it’s a big cost of the system.

2.    Solar Charge Controller: Controls the DC current from the solar panel to charge the battery system

3.    Inverter : Converts DC power to AC power.

4.    Battery: The function to store energy from the solar panels. It uses for regulation the difference between the offer with use. The batteries used for solar power is dedicated battery with ability of charging and discharging depth and durability. These batteries must be checked frequently and maintained in accordance with the technical process, to ensure the longevity and quality.

5.    Frame and mountings of solar system and wiring, CB .... it must to be proper angle and direction for the solar panel obtained the maximum energy at any time of day, season of the year. Wiring must ensure safety and proper technique, to reduce the size to avoid loss incidents.

II.  SYSTEM DIAGRAM

III.  DESCRIPTION OF ACTIVITIES:

When the sunshine solar panels converts sunlight energy into direct current (DC). This current through the device Solar Charger to charge the batteries.

 When the battery is full Solar Charger will automatically stop charging at the same time when battery too shallow it will not bring the DC power load in order to protect and extend the life of batteries. When the voltage of the batteries reducing Solar Charger Controller will automatically reload until it is full.

Inverter functions to convert DC power from the batteries into AC power of a sine 220VAC/50Hz to use the AC. Total capacity of the AC always be less than the maximum capacity of inveter. Especially with the AC inrush current such as pumps, air conditioning, refrigerator, ... then of inveter power tends to be greater than the nominal capacity of the load is 2 to 3 times.

IV. BE CAUTION WHEN USING AND INSTALLATION SOLAR OFF GRID POWER SYSTEM:

·         Must be installed the battery before and the inverter is completes then connect to the solar system. If you want to replace or maintain batteries to disconnect solar  first. When mounted solar battery on the system absolutely not remove the battery from the system.

·         Inverter will automatically stop in the following cases:

-        Use overload, short-circuit.

-        Low battery.

-        High temperature because not guarantee ventilation.

-        Other Problems

When the inverter stop to work itsef, you need:

-        Turn it off.

-        Check the operating conditions of inverter.

-        If you turn it on without running, please contact our dealer for repair and warranty.

• Absolutely not arbitrarily open machine repair!

·         Now Viet Linh –AST company has produced Inverter - Solar Charge the device integrates two components of Solar Charge Controller and Inverter. When using this product system diagram as follows:

 

 Related iterms:

-       Off Grid solar power system(independent of the grid)

-       On grid solar power system - Grid Tie Solar Inverter. 

-       Grid Tie Solar Inverter  with backup. 

-       Solar home system. 

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   VIET LINH MANUFACTURING AND TRADING ELECTRIC-ELECTRONIC LIMITED COMPANY
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 83/ 24 Bach Dang Str., Ward 2, Tan Binh Dist., HCM City, Vietnam (near Tan Son Nhat airport)
(84-8)38955408
(84-8)38941670
 vietlinh@ast-vn.com
 www.ast-vn.com