无电解电容两级单相逆变器中二次谐波电流抑制的拓扑与控制

Aiming for high reliability, it is necessary to remove the electrolytic capacitor from a two-stage single-phase inverter. To enforce this, the flying capacitor of the flying-capacitor-clamped (FCC) boost three-level (TL) converter was employed to buffer the second harmonic current (SHC). In this article, the topology of FCC boost TL converter was reconstructed from the viewpoint of active clamping...