We shared the information you will need after electricity generation in our title after Electricity Generation with Solar Energy. Solar energy is used as AC or DC according to the needs of the consumer after converting to electrical energy in solar panels.
DC energy is obtained directly from batteries. AC energy is obtained with the help of an inerter. Charging regulators provide control of this cycle. Regulators protect batteries in case the battery is overcharged or discharged.
Batteries can generally be divided into three. These can be counted as Dry type, Opzs (Low Maintenance Scuba Stationary) and Gel type. Dry batteries can be preferred due to their affordable prices and ability to work in a wide range of heat. Opzsler, on the other hand, gives the user an advantage with low maintenance levels and low discharge levels. The advantage of gel type batteries is that they have long service life in cold environment, no maintenance, high security and very low discharge level.
The following features are expected from the group of batteries to be connected to a photovoltaic system;
- Resistance to high temperature,
- Excellent performance in high amounts of deep discharges,
- In case of deep discharge, the battery will reach its full performance again in a short time,
- Ideal structure for applications where energy input is not regular,
- No need for a balancing charge (The balancing charge is a charge to recharge the deteriorating internal structure of a battery. In this charging process, the density and voltage levels of the cells become 20. This process is also called maintenance or refresh charge.)
- Maximum protection against water loss,
The place of use of batteries is very important in the selection of batteries. For example, if a garden and street lighting is to be done, it is more convenient to use gel-type batteries here. Because the acid-based battery use situation should be water supplemented in periods such as 4-6 months. In environments where maintenance is easy to make, dry batteries can be preferred.
The capacity of the batteries is expressed in Ah (amper-hour). What is described here in the amper-hour statement is that if we pull 60 A's from a group of 60 Ah batteries, we will run out of power in an hour, and if we pull 30 A, we will be able to get this power for 2 hours.
The efficiency of batteries is approximately 90%. Batteries should be charged if the charge level drops below 50%. After this process, the structures of the batteries begin to deteriorate.
Here's how to make a battery selection account for a photovoltaic system;
Let's think of a house's daily energy needs as 5 kWh. It is relatively unlikely that a region in Turkey will be without sun for three consecutive days. Here, it is not calculated over three days and it is done over two days, it is desed to avoid cost extraction for the under-used part of the battery group. It is assumed that the mains electricity will be activated at the point where the battery is out of power.
Now that the two-day energy is 10 kWh and we assume that the batteries we have are 12 V, we see that we need a 1200Ah battery group to use these batteries without charging them below 70%. We can achieve this capacity by connecting six groups of 200Ah batteries in parallel.
After Electricity Generation with Solar Energy – Inverters (Inverters)
Inverters dc energy is the power circuits that translate ac energy. The power of the inverter to be selected in a photovoltaic system should be chosen not based on the total power generated by the panel at the time, but by ingly ing the total power that the devices will draw. It should be noted that more power can be installed in the system than the power generated by the panel from the battery group.
Inverters have a wide range of uses. Here's how to put it.
- Ac engine control
- Uninterrupted Power Supplies
- Switched Power Supplies
- Heating with Induction
- Electronic Ballasts
- AC voltage sources and regulators
In simple sense, the design of an inverter can be ed as follows;
Here, the 12V DC voltage source is kept in a loop in the form of closing the open switches and opening the closed ones, resulting in AC voltage.
In the market, it is frequently used with single-phase sinusoidal PWM inverter, which has low harmonic content and can control output frequency and voltage. With this type of inverters, it is possible to obtain output in the form of a low sine with harmonic content. Low harmonic content ensures that the electronics we run in our home work more healthily.