Redox flow batteries are one of the most relevant emerging large-scale energy storage technologies. Developing control methods for them is an open research topic; optimizing their operation is the main objective to be achieved. In this paper, a strategy that is based on regulating the output voltage is proposed. The proposed architecture reduces the number of required sensors. A rigorous design methodology that is based on linear H-infinity synthesis is introduced. Finally, some simulations are presented in order to analyse the performance of the proposed control system. The results show that the obtained controller guaranties robust stability and performance, thus allowing the battery to operate over a wide range of operating conditions. Attending to the design specifications, the controlled voltage follows the reference with great accuracy and it quickly rejects the effect of sudden current changes.
2019 and 2020 were a boom period for solar and wind power projects in Vietnam, but it also revealed a weakness that many people anticipated: excess electricity during sunny and windy times and serious electricity shortages. when there is no longer the support of nature. The instability of renewable energy has placed a large financial burden on investors and also made it difficult for national grid operators to adjust to source fluctuations. In that context, battery energy storage systems (Battery Energy Storage System – BESS) are the missing link of renewable energy. According to MSc. Trinh Viet Dung, Dynlab Laboratory at Hanoi University of Science and Technology: “For solar and wind energy to be used effectively, we need a type of battery that can store large amounts of electricity for a long time at a low cost. Affordable fees. We believe there are several technologies that can ensure this and flow batteries are one potential technology.”
Lion Technical Solution can be considered the first unit in Vietnam to have proposed solutions, processed, and supplied many types of graphite sheets to serve BK PMTS Vietnam to research, develop, raise capital, and test successfully Mass storage battery system. We will develop different flow battery lines based on available raw materials to improve competitiveness and reduce costs. In essence, the materials used to design storage batteries will be based on customer needs. There are customers who only need small capacity and short depreciation period of 4-6 years. There are also customers who require a more powerful battery generation, more charge-discharge cycles and a life cycle of up to decades. Depending on that, we can use different materials such as zinc, iron, Vanadium, Cerium, etc.
