Three-Level SOC Equalization Control Strategy for MMC-BESS Based on Feedforward Sliding Window Integral Method

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Phases <i>x</i></td><td class="align_center">Current peak of three phases (A)</td><td class="align_center">Current effective value of three phases (A)</td><td class="align_center">Average value of effective value of three-phase current (A)</td><td class="align_center">Differential phase current (effective value of phase current - average value of effective value of three-phase current) (A)</td><td class="align_center">Three-phase current unbalance degree (max effective value of differential phase current divided by average value of effective value of three-phase current)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left"><i>A</i>-phase</td><td class="align_center">228.8</td><td class="align_center">161.81</td><td class="align_center" rowspan="3">160.96</td><td class="align_center">0.85</td><td class="align_center" rowspan="3">2.4%</td></tr><tr><td class="align_left"><i>B</i>-phase</td><td class="align_center">222.1</td><td class="align_center">157.07</td><td class="align_center">3.89</td></tr><tr><td class="align_left"><i>C</i>-phase</td><td class="align_center">231.9</td><td class="align_center">164.00</td><td class="align_center">3.04</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Unbalance degree parameters of three phases.</div>

Shock and Vibration

tab3

Table 3

Table 3: Three-Level SOC Equalization Control Strategy for MMC-BESS Based on Feedforward Sliding Window Integral Method 