Fuzzy State Machine Energy Management Strategy for Hybrid Electric UAVs with PV/Fuel Cell/Battery Power System

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/ijae/volume-2018/2852941/figures/2852941.fig.003a.svgz" name="2852941.fig.003a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Surplus demand power membership functions</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/ijae/volume-2018/2852941/figures/2852941.fig.003b.svgz" name="2852941.fig.003b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Battery SOC membership functions</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/ijae/volume-2018/2852941/figures/2852941.fig.003c.svgz" name="2852941.fig.003c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Fuel cell power membership functions</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/ijae/volume-2018/2852941/figures/2852941.fig.003d.svgz" name="2852941.fig.003d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Fuel cell-desired power rule base surface</td></tr></table>

<div>Membership functions and rule base surface.</div>

International Journal of Aerospace Engineering

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Figure 3

Figure 3: Fuzzy State Machine Energy Management Strategy for Hybrid Electric UAVs with PV/Fuel Cell/Battery Power System 