Energy Management for Battery-Powered Systems
Keywords:
battery, energy management, lithium-ion battery model, energy consumption, energyAbstract
In this paper, I simulate an energy management system working on a single processor and single battery-powered circuit. An accurate yet simple lithium-ion battery model will be introduced. From there, I further discuss how to minimize energy consumption while fixing tasks to prevent the system from missing deadlines. Different types of schedulers are explained and compared, and a Python simulation shows the effectiveness of scheduling and voltage scaling methods working together on reducing energy consumption. In the simulation, three groups are created that represent the variety of different situations and compare the results. The scheduler first sequences the tasks in non-ascending order by their amperage draw then rearranges and scales up voltages to fix the tasks which couldn’t meet the respective deadlines. Lastly, voltages are scaled down to reduce energy consumption when possible. Energy consumption results for each group are calculated and compared.
References or Bibliography
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