Soc control of energy storage battery

How do you account for a battery's SoC impact?

Accounting for the battery’s SoC impact involves introducing a supplementary term to Id,ref, as detailed in the preceding section. Figure 10 visually illustrates a schematic of the improved control scheme. Schematic of proposed power–voltage (P–V) control strategy for battery energy storage system (BESS)-fed grid-connected inverter.

How does SoC affect battery performance?

Moreover, SoC affects the battery’s performance, efficiency, and lifespan; thus, it should be appropriately managed . Droop control methods are common for managing power flow between the BESS and the grid [13 – 15].

What is SoC balancing in hybrid energy storage systems?

Ref. proposed a local-distributed and global-decentralized SOC balancing control strategy for hybrid series-parallel energy storage systems, which can offset the SOC of each energy storage unit (ESU) to the same value in a distributed manner.

Which SOC unit keeps a maximum charging power during SoC balancing?

More specifically, it shows that the maximum-SOC unit (i.e., unit 1) keeps a maximum discharging power during most of the SOC balancing process. At the end of the SOC balancing process, the minimum-SOC unit (i.e., unit 3) keeps a maximum charging power for a short time.

What is a control strategy for energy storage?

Compared with the traditional control strategy, the proposed control strategy can effectively balance the SOH and SOC of each energy storage unit and keeps the system's overall capacity for a longer period.

How important is state-of-charge (SOC) in a Bess battery?

However, the operation of BESS might be challenging, as it requires careful management and control of its state-of-charge (SoC), which reflects the remaining energy capacity of the BESS. Moreover, SoC affects the battery’s performance, efficiency, and lifespan; thus, it should be appropriately managed .