FAQ

Charging (AC to DC or DC to DC): Takes AC electricity (coming either from the grid or from the AC output of a separate solar inverter) and converts it to DC electricity to charge the connected batteries.Charge batteries through solar charger controller.

Discharging (DC to AC): Takes DC electricity from the connected batteries and converts it to AC electricity to power loads or feed back to the grid.

1.Enables Energy Storage: Allows you to add battery storage to an existing solar system (AC coupling).

2.Backup Power: Provides power during grid outages.

3.Load Shifting: Store grid or solar power when cheap/available, use it when expensive/needed.

4.Grid Suppport: Can potentially provide grid support functions (frequency regulation, peak shaving).

A device dedicated to controlling the charging and discharging of a battery energy storage system (BESS), converting between battery DC power and usable AC power for the load or grid.

Battery Inverter: Primarily focuses on managing the battery storage system. It typically requires an AC power source (like grid connection,DG or a separate solar inverter's AC output) to charge the batteries. It converts battery DC to AC for loads and converts incoming AC to DC to charge batteries. It doesn't directly handle DC input from solar panels itself.If it need to charge the battery using pv power, an additional solar charging controller will be required.

Hybrid Inverter:Combines the functionality of a solar inverter and a battery inverter in one unit. It can directly accept DC input from solar panels and manage a battery storage system simultaneously. It integrates both functions natively.

A battery inverter primarily manages the charging and discharging of a battery storage system. It converts DC power from the batteries into AC power for load use or export, and converts AC power (from grid or generator) into DC power to charge the batteries.

The high-frequency hybrid inverters uses high-frequency switching equipment for voltage conversion. It has a small size, light weight, lower cost, and generally higher conversion efficiency. However, it has relatively weaker tolerance to grid fluctuations and load impacts (especially inductive loads such as motors), and its overload capacity is slightly inferior. 

The power-frequency hybrid inverters uses traditional power frequency transformers for voltage transformation and isolation. It has a large volume, heavy weight, high cost, relatively low conversion efficiency (about 90% or so), a sturdy structure, strong resistance to load shock (especially suitable for motor starting), good overload capacity, a purer output waveform (with high quality of sine wave), and good isolation from the power grid.

It is not compatible with all types of batteries. Hybrid inverters usually have specific battery voltage ranges (for example, the battery voltage range of the Atess HPS150 is 352-600V) and communication protocol requirements. When configuring the system, it is necessary to ensure:

1.Voltage matching: The nominal voltage of the battery pack must be within the battery voltage range supported by the inverter.

2.Communication protocol compatibility: The inverter and the battery must use the same communication protocol to achieve charge/discharge control, status monitoring, and safety protection.