Energy processes in load when operating from a combined power source with a supercapacitor and a battery

() - (). . , - ., ' , , - . - . Buck/Boost, - Boost () . - , . - ., C = 500 (), = 6,6 ( .). Matlab. ., 95 % . 3,3 6 (), . : ; ; ; ; ; ; ; .Energy processes in load when operating from a combined power source with a supercapacitor and a battery.Biletskyi O., Zaluskyi D.In this work, an analysis of energy processes in the load when powered by a combined power source with a supercapacitor battery (SC) and a lithium-ion battery was performed.An analysis of the energy characteristics of the discharge circuits of the combined power supply system was performed.The modes under which the SC battery provides pulsed power and the lithium-ion battery maintains long-term power consumption modes were investigated.It was proved that parallel connection of the SC battery to the battery reduces pulsed currents in it at all increases in active power in the load, provided that the internal resistance of the SC battery is less than the internal resistance of the lithium-ion battery.It was analyzed that when the internal resistance of the SC battery decreases with the unchanged resistance of the battery, the pulse current in the load and the ratio of currents in the SC battery and the battery increase.The equivalent circuit shows a hybrid source with SC and a lithium-ion battery.The SC battery is connected to a Buck/Boost converter, while the lithium-ion battery is connected to a Boost (boost) converter.The peak power of the lithium-ion battery is limited by electronics, and the power in the load at peak modes is covered by the SC battery.The energy characteristics of the SC battery and the lithium-ion AB were studied when they operate as part of a combined energy source for a common load.It was taken into account that the capacity of the SC battery was C SC = 500 (F), and the capacity of the AB, respectively, E AB = 6.6 (Ah).The simulation was carried out in the Matlab package.The results of the research were compared for different ranges of pulse power changes in the load.It was established that the pulse power in the load at the beginning of the transient process when working on the load is provided by 95% by the SC battery.The AB provides the required maximum power in the time range from 3.3 to 6 (s), at this time the SC battery does not work on the load and all the power is provided by the AB.