What is a SoC balancing control strategy for energy storage units?
A SOC balancing control strategy for energy storage units with a voltage balance function is proposed. An analysis of SOC trends is carried out in response to the power changing of loads and micro-source. An adaptive virtual resistances algorithm is coordinated with the control strategy of VB to accelerate the balance process.
How to improve the carrying capacity of a distributed energy storage system?
To improve the carrying capacity of the distributed energy storage system, fast state of charge (SOC) balancing control strategies based on reference voltage scheduling (RVSF) function and power command iterative calculation (PIC) are proposed in this paper, respectively.
What is SoC balancing for capacity inconsistent systems?
SOC balancing for capacity inconsistent systems In a system consists of ESUs with inconsistent capacities, the storage units' target energy no longer equals the average value.
How does SoC balancing affect power supply quality?
When VB is performs energy transmission, it changes the SOC deviation and increase the bus voltage unbalance, affecting the power supply quality of the bipolar DC microgrid. The SOC balancing power bridge plays a critical role in controlling the direction and duration time of SOC balancing for the batteries.
How to reduce voltage unbalance on SoC balancing?
In order to decrease the voltage unbalance on SOC balancing, apart from adding bus voltage recovery control to the positive and negative batteries, the virtual resistances are related to the SOC deviation when the SOC deviation is slight.
What is the maximum power flow during SoC balancing?
It can be seen from Fig. 11 (f) that for the PCI-based strategy, there is always at least one unit operating with the maximum power flow (8.5 kW) during the SOC balancing process. 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.
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