Things to Know About Inverters
An inverter, which can be defined as a power conversion element, is also called a power converter or inverter. Electronic equipment that converts direct current (DC) to alternating current (AC) and also adjusts frequency and voltage levels is called an inverter. Inverters are power electronic circuits used to obtain fixed or variable AC voltage with amplitude and frequency by processing the voltage received from any DC source. The reverse function of the inverter is called rectifier or rectifier.
The inverter provides ac current at desired voltage, power or frequency values. Inverters are used in televisions and lighting lamps to generate electricity from renewable energy sources and to operate in mobile environments such as cars, boats or camping areas. It is also used in electronic tools such as computers, drills and vacuum cleaners.
In order to make the energy obtained from wind and solar energy systems suitable for use, more quality and stable inverter types with more features are produced. Microprocessor or low voltage controlled, alarm and warning outputs, overload protection, static regulation inverters are offered to the market by manufacturers. Inverters that do not damage the grid because they do not have inrush currents operate in minimum and maximum ranges.
In the energy field, inverters are used to produce uninterrupted, balanced and higher quality energy in renewable energy plants that make intermittent and variable production such as wind and solar. In addition, inverters are used to draw energy from energy storage systems such as batteries with the desired feature.
Thanks to inverters, it is possible to convert 12V, 24V or 48V direct current into 220V alternating current. In general, the inverter feature is the speed adjustment (frequency adjustment) between 0.5 and 2000 Hz. Grid managers want the quality of the energy produced to be the same as the grid characteristics. For this reason, inverters adjust the quality, voltage, frequency and AC-DC current type of the electricity to be supplied to the grid. These factors are among the most important factors affecting the network quality.
The inverter first rectifies the mains voltage and regulates the decreases and increases in the current. It regulates the problematic electrical fluctuations and transmits them to the coil and capacitor and ensures that they are cleaned. It reduces the mechanical parts errors caused by these effects and minimizes the costs of these parts such as repair and maintenance and prolongs their life.
Inverters are divided into two groups according to their intended use;
-To produce alternating current (AC) from a direct current (DC) source.
-To change the voltage or frequency of the generated AC current.
To do this, in the inverter; There are 4 circuit elements as rectifier, frequency changer, power circuit and automatic control elements.
Grid-tie inverters are divided into three as central, string and micro inverters.
Central Inverter: Central inverters are used in large power plants.
String Inverters: String inverters can be preferred in both field and roof applications. It is possible to use different types of string inverters on different roof types. The purpose of string inverters is to divide a single power plant into parts and to ensure that each part produces energy independently of each other.
Micro Inverters: Micro inverters are inverters, each of which is mounted behind a panel. It is especially preferred in roof systems where partial shading is too much.
What are the Benefits of Using Inverter?
- It ensures that the motor and mechanical parts faults caused by the disturbing effects in the network frequency are kept at a minimum level by minimizing the repair and maintenance costs, and therefore the motor and mechanical arrangement life is extended.
- For the capacity control of a fixed speed pump or fan, throttling valves, shutters or dampers can be used. These devices increase the pressure, forcing the fan or pump to operate at a point on the curve that will allow less flow. Power use is a product of pressure and flow. Reducing the outlet increases pressure while reducing flow and saving some energy.
- Speed changes can be made quickly and inexpensively, since there is no need for gear or pulley assemblies for speed changes.
-Due to its soft starting feature, it contributes to a reduction in mechanical maintenance and breakdown costs, prolongation of maintenance times and lifetimes due to the absence of the impact start and stop feature made to the mechanical mechanisms at the first start and stop.