The rising popularity of solar energy systems, particularly grid-tie photovoltaic (PV) systems, is a testament to the growing demand for renewable energy solutions. A crucial component of these systems is the grid tie power inverter. A grid tie inverter (on grid inverter) converts direct current (DC) into an alternating current (AC) suitable for injecting into an electrical power grid, normally 120 V RMS at 60 Hz or 240 V RMS at 50 Hz. Grid connected inverters are used between local electrical power generators: solar panel, wind turbine, hydro-electric, and the grid.
Key features of grid tie inverter:
- Synchronization with the Grid: Solar grid tie inverters are designed to synchronize with the grid's voltage and frequency. This ensures that the power they produce is compatible with the grid's power.
- Maximum Power Point Tracking (MPPT): MPPT technology optimizes the power output from the solar panels by adjusting the electrical operating point of the modules or array.
- Anti-Islanding Protection: This safety feature ensures that in the event of a power outage, the inverter will automatically shut down to prevent the accidental backfeeding of electricity into the grid, which could endanger workers.
Do you know how to ue grid-tie inverter for solar systems/ PV system? Today we will show you by using a 18VDC 150W photovoltaic panel and on grid inverter, in order to form a grid-tied system, grid-tie inverter, circuit breaker and engergy calculation tables.
Wiring:
- Conneting the output line of the PV panel to the input of the grid-tie inverter.
- Connecting the output AC directly to the grid.
How to use solar grid tie inverter?
- Turning on grid-tie inverter, the red light is on to indicate that grid-tie inverter has not started working.
- When the green light flashes, it indicates that the grid-tie inverter is working normally.
- View the energy meter, the grid-tie inverter output voltage is 234VAC, the output useful power is about 10W.
- This is related to the light intensity. The currnet useful power is around 0.44. Output frequency is 50 Hz.
See more information by clicking the video below.
Safety Precautions:
- Professional Installation: Ensure the inverter is installed by a qualified electrician or technician. Improper installation can lead to electrical hazards, fires, or damage to the inverter and connected systems.
- Proper Grounding: The solar on grid inverter must be properly grounded to prevent electric shocks and ensure the safety of both the equipment and users.
- Surge Protection: Use surge protectors to safeguard the grid tie inverter and other connected devices from voltage spikes caused by lightning or grid fluctuations.
- Disconnect Switches: Install AC and DC disconnect switches near the inverter to quickly isolate it from the power source and grid in case of maintenance or emergencies.
- Ventilation and Placement: Install the pv grid connected inverter in a well-ventilated area to prevent overheating. Avoid placing it in direct sunlight or enclosed spaces without adequate airflow.
Technical Precautions:
- Compatibility: Ensure the on grid tie inverter is compatible with the grid’s voltage and frequency. Using an incompatible inverter can cause malfunction or damage to the grid infrastructure.
- Load Capacity: Verify that the inverter's capacity matches the power output of your renewable energy system. Overloading the inverter can lead to reduced efficiency and potential failure.
- Anti-Islanding Protection: The solar grid tie inverter should have anti-islanding protection to automatically disconnect from the grid during a power outage. This prevents backfeeding, which can endanger utility workers and damage equipment.
- Firmware Updates: Keep the inverter's firmware updated to ensure it operates with the latest safety and efficiency improvements.
Using a grid on inverter for a solar PV system is a smart and sustainable way to harness solar energy. By converting solar power into usable AC electricity and integrating seamlessly with the grid, grid tie solar inverters provide both economic and environmental benefits. With careful planning, proper installation, and regular maintenance, a grid tie solar system can offer a reliable source of renewable energy for years to come. If you have any question, Inverter shop will give you a good solution.
