14/01/2016
It is important to choose the right PV system to get the most benefits. There are different factors to be considered while selecting the right PV system. Factors such as Unit consumption ( which further needs a break down of monthly consumption, daily and time of the day), kind of load you want to run, power failures in your area, whether your utility has net metering or not and many others. Below are the type of PV SYSTEMS
TYPES OF SOLAR PV SYSTEM
1. PV System: GRID-TIE (BATTERY FREE)The simplest and most cost effective PV design for most sites is the "Grid-Tie System". This system does not provide backup power during a power outage (even if the sun is shining) but for sites with reliable grid power, this is usually the logical system choice but the utility company should have net metering facility.
2. PV System : GRID HYBRID SYSTEM WITH BATTERY BACKUP. This type of system can be connected with grid and batter Backup system and have options of pushing excess electricity produced to the utility grid post meeting your requirement and charging the batteries this system works when grid is down. If net metering not available then these system give priority to solar before using grid to reduce your bill. With this benefit comes increased complexity, cost and maintenance requirements.
3. PV System: STAND-ALONE The Off-Grid or Stand-Alone PV System incorporates large amounts of battery storage to provide power for a certain number of days (and nights) in a row when sun is not available. The array of solar panels must be large enough to power all energy needs at the site and recharge the batteries at the same time. Most Off-Grid systems benefit from the installation of more than one renewable energy generator and may include Wind and/or Hydro power.
Stand-Alone PV System
4. PV System: PV DIRECT- PV Direct systems are usually very simple systems where the photovoltaic panel is connected directly to a motor or pump which matches the voltage and amperage output of the panel. When the sun shines and the PV panel produces electricity, the device runs--when the sun is not available, the device stops. This system is often used for livestock where a well-pump lifts water out of the ground to a watering trough in remote locations. Other applications include solar powered attic fans, irrigation systems and small day-time garden waterfalls or fountains.
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