The modern tech Deye provides hybrid inverters that are suitable for residential and C&I segment. The wide range of hybrid inverters are available in single phase and three phase. The low voltage hybrid inverters available from 3kW to 20kW supports both lead acid batteries and lithium batteries. The single phase low voltage (LV) hybrid inverter ranges from 3kW to 8kW and three phase low voltage (LV) hybrid inverter ranges from 5kW to 20kW. The high voltage (HV) hybrid inverters support lithium batteries that starts from 20kW to 80kW. The 3kW in single phase LV inverter supports batteries at 24V or 25.6V and 48V or 51.2V and the other LV inverters are available at 48V or 51.2V. The battery range in HV hybrid inverter is 160-800V/1000V.
The advanced technology hybrid inverter supports 100% unbalanced load with 50% in two phases. These inverters can handle resistive load, capacitive load and even surge peaks of any inductive load by allowing upto 2times of the rated capacity for 10s and continuous 10% AC overloading.
Working Principle of Solar Hybrid Plant
The solar hybrid plant is comprises of C-Si (crystalline silicon) modules connected to Deye hybrid inverter. The solar plant generates electricity during sunshine hours and cater the load connected to the inverter. The clipped energy, due to 30% overloading of solar PV plant, can be stored in batteries. The batteries or grid cater the night or non-sunshine hour loads. In cases where solar is generating less comparatively, the grid as supplement is used to fulfil the requirement i.e to charge the battery and to power the load.
The advanced function of Deye hybrid inverter includes:
Selling First
This allows hybrid inverter to sell the surplus energy generated by solar panels to grid. If Time of Use mode is activated, then battery energy can also be exported to grid.
Time of Use
The “Time of Use” feature in hybrid inverters allow user to set the window for charging and discharging the batteries based on peak and off-peak hours tariff and demand.
The batteries can be charge through grid or DG.
Integration of Diesel Generator
The virtual synchronise generator (VSG) feature in inverters grants existing diesel generator to integrate to the system. This integration assures continuous working of load connected to the system and zero blackout.
When solar, grid or SoC of the battery is less, inverter sends signal to generator and generator then cater the load and simultaneously charge the battery.
Zero Export
hybrid inverters have inbuilt zero export feature which enables to limit the daily generation as per running load.
Hybrid inverter allows user to select the conditions which are as follows:
1. Zero Export to Load
Hybrid inverter will be able to power the connected backup load. The inverter will neither power to the home load nor export power to grid. The built in current transformer (CT) will sense the power and will reduce the inverter power if needed depending on the running load and the power needed to charge the battery.
2. Zero Export to CT
Hybrid inverter will power the backup load and home load connected to the system. Incase of less generation from solar or less SoC of battery, grid will act as supplement to fulfil the requirement. No surplus energy will be exported to grid.
Solar Sell option with zero export to load and zero export to CT enables the export the surplus energy to grid.
3. Zero Export Power
Deye hybrid inverter ensures no energy is fed to grid.
Grid Peak Shaving
Deye hybrid inverter limits the input from grid. It ensures no excess or more than the set values power is imported from grid. Incase when more load is running, generation of solar plant or battery will be used as supplement.
AC Coupling
In diesel generator port of the hybrid inverter, the existing ongrid solar plant can be retrofitted. The load can be powered by hybrid solar plant and if needed from ongrid solar plant. The generation from ongrid solar plant can also be simultaneously fed to grid.
Smart Load
In situation where customer wish to run the heavy load or inductive load or any smart load only on battery energy storage solution, then hybrid inverter synchronises and turn on the smart load/inductive load/heavy load automatically when the SoC of the battery is 100% and turn off the load when it reaches its specified lower limits.
These loads are connected to the diesel generator port of the hybrid inverter which is available in all variants.
Max Sell Power
The maximum power to be fed to grid can be set in the inverter.
Energy Pattern
Depending on the priority of customer, the energy pattern can be set.
Batt First:
This enables user to charge the battery first through solar plant and then to cater the load. If less generation if observed from solar plant then the batteries are charged from grid.
Load First:
This enables user to power the connecter load and then excess can be used to charge the battery first through solar pl ant. If less generation if observed from solar plant then the load is catered by grid power.
