Hi everyone welcome back to PV Solar Energy of course. 1
Today I'm going to give you in this section the different types of PV system the PVsystem can be divided 2
in two main category. 3
The grid connected PV system and the stand alone PV system first the grid connected PV system can be 4
divided into two categories. First category it would be without a storage system mean it is without 5
batteries. 6
In the next type or bimodal PV the system we are using storage system which is this case is battery 7
the stand alone. 8
PV system can be divided into all main categories. 9
Hybrid category and a standalone category first stand alone or off grid category can be divided in two 10
main category first category. 11
It would be without battery. 12
Like the water pump the second type is with battery. 13
It would be for residential applications. 14
The last type of the stand alone PV system is hybrid PV system mean we are using PV power with another 15
type of power. 16
It could be wind turbine, hydro turbine or diesel generator or even solar cell. 17
Let's start with stand alone PV system on the stand alone or off grid systems work in general without 18
the utility grid as shown in this figures it can been seen that we expect a perfect match between 19
the supply and demand or in other word, between the PV system size and load requirement 20
when this match is done perfectly for a single load. 21
The PV system in this case can be called a direct Coupled PV system and very minimal 22
components are needed without the need storage. 23
Like battery another type of stand alone requires the storage system to allows excess energy to be stored 24
when it isn't needed 25
by the load and can later be drawn when the sun isn't available. 26
This type can be connected directly to DC load or AC loads through an additional power component called inverter. 27
We already describe in the last section 28
the other common type of stand alone system. 29
It is a hybrid PV power as shown in this figure which uses other energy source in parallel to 30
the PV array to supply the loads 31
This energy source can be wind turbine, hydro Turbine, diesel generator or even fuel cell. Hybrid 32
PV system can also use battery for energy storage 33
the grid connected system. 34
This type of configuration is the most common type for application where the clients want to 35
save energy on their utility bill. 36
And while the utility grid exists for use when the PV array is not generating any energy. The PV array 37
can be directly coupled to the grid without any storage system. 38
It's called utility interactive PV system or grid tied PV system as shown in this figure. 39
Or in other case it can store the excess energy into a battery banks for later use and in this case 40
it's called bimodal PV system or battery backup PV system as shown in this figure. 41
We are using battery for energy storage so we can summarize that we had two main categories. 42
First category is the grid connected 43
The second category is a stand alone in the Next section and is the last one. 44
We are going to form a complete calculation for PV system sizing for stand alone system so see you in 45
the final project. 46
See you.