In the grid-connected situation, considering the line impedance and the inductive and resistive impedance existing in the actual power grid, Zload is equivalent to resistive-inductive. Therefore, the model established above and the voltage sharing control strategy discussed are also applicable to the half-bridge grid-connected inverter, the only difference being that Zload is a relatively small resistive and […]
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According to the equalization control idea of class B, the equalization control method based on the self-balancing characteristic is discussed below. According to the effect of closed-loop control on the self-balancing characteristics of 3L-NPC, in order to satisfy the idea of B-type equalizing control, the closed-loop control needs to meet two conditions under the action […]
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Based on the above analysis, in the closed-loop control, if the regulator has no response to the DC component or the response to the DC component is small and does not destroy the self-balancing characteristics of 3L-NPC, the self-balancing characteristics of 3L-NPC can be used to achieve capacitor voltage balance control. According to the influence […]
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