Dr. Ali issued patent for a triple-function battery energy storage system
June 1, 2026
Dr. Mohd. Hasan Ali, professor and interim chair of the Electrical and Computer Engineering Department, was issued a patent May 19 for a triple-function battery energy storage system designed for hybrid microgrid systems (Patent No. 12633748). The invention improves on existing battery energy storage technology by performing three functions within a hybrid AC/DC microgrid: stabilizing the system during faults, improving power quality during sudden load changes, and reducing power and frequency fluctuations caused by variations in wind speed and solar irradiance—all using a single control and structural design. The streamlined design eliminates the need for multiple auxiliary control devices, making the system less expensive to manufacture, easier to implement, and adaptable for retrofitting into existing hybrid microgrids.
Dr. Ali explained that the storage system serves three functions: (1) improving the transient stability in a hybrid AC/DC microgrid (HMG) system during any fault; (2) improving power quality in the HMG during any sudden load change; and (3) mitigating power and frequency fluctuations due to variations in wind speed and solar irradiance in the HMG.
The same control and structural design is used for all three functions, and the improved battery energy storage system thus is adaptive to the changing operating situations within the HMG and eliminates the requirement for a number of higher-cost auxiliary control devices. The control structure of the improved BESS is simple, so it is easier and cheaper to manufacture and can be easily implemented in practice and retrofitted into existing HMGs.