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This paper presents a model predictive control (MPC) of five-level H-bridge neutral-point-clamped (NPC) quasi-impedance source inverter (qZSI). The proposed control technique is designed to handle three control objectives with simple and effective approach. The output current, the input current and the capacitor voltage are the control objectives of the proposed MPC algorithm. To fulfill these control...
This paper presents a grid-connected five-level neutral-point-clamped (NPC)/H-Bridge quasi-impedance source inverter (qZSI) and its control scheme for use in PV applications. The proposed topology is combination of a three-phase qZS network and NPC/H-Bridge inverter that is suitable for high power applications. The proposed inverter transfers dc power into the ac power without dc/dc boost converter...
Second harmonic pulsating power flows through the dc side of the single-phase quasi-Z-source inverter (qZSI). This requires bulky capacitor banks and inductors to suppress the second harmonic ripple of dc-link voltage and inductor currents. However, the resultant qZS network seriously deteriorates the system reliability, efficiency, volume, weight, and cost. This paper proposes an active filter integrated...
The single-phase quasi-Z source inverter topology (qZSI) is attracting attentions for the single-phase grid-tie photovoltaic applications. However, due to the inherent second harmonic power flow in a single phase system, a large qZS network is required to reduce the second harmonic components of current and voltage at the dc port. Minimization of this qZS network remains an open research topic. This...
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