Niue Industrial Uninterruptible Power Supply BESS

What is a battery energy storage system (BESS) & an uninterruptible power supply (UPS)?

Figure 1: A simplified project single line showing both a battery energy storage system (BESS) and an uninterruptible power supply (UPS). The UPS only feeds critical loads, never losing power.

What is an uninterruptible power supply (UPS) system?

Uninterruptible power supply (UPS) systems have been a familiar presence for years, known for their ability to enhance power quality and offer continuous power for critical loads. These systems typically supply power for a few minutes while the generator starts up.

What are energy storage units (ESUs)?

Typically termed energy storage units (ESUs) or battery energy storage systems (BESS), these house all necessary components, including: Power electronics: Manage the flow of energy in and out of the system, ensuring seamless integration with the electrical grid or standalone applications.

Does a Bess need a separate ups?

While the BESS can start up quickly, it is not instant and there will be a brief voltage supply disruption during startup. As a precaution, the system will require a separate UPS to power sensitive or critical components, potentially including the controller for the BESS.

Why do you need a Bess system?

logs for generators, or battery end of life failures for UPS systems. Since the BESS will provide uninterrupted power to the connected load, this design solution can also simplify the controls and sequence of operation between the electrical and mechanical systems

What type of battery does a Bess system use?

BESS systems can use a variety of battery types with relative advantages and disadvantages that are worth considering. For example, Lithium Iron Phosphate (LFP) batteries offer longer term deep cycle durability than Lithium polymer (LiPo) and they are resistant to dendrite growth so they pose no fire risk.