Investigation on Z-Source Inverter Topologies for Grid-Tied Solar Photovoltaic Systems

Miyani, Piyush B.; Sant, Amit V.

doi:10.1109/ccube53681.2021.9702714

Cited by 1 publication

(1 citation statement)

References 13 publications

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“…By inserting the shoot through the zero vector in the modulation and by changing the voltage gain, the step up or step down can be realized, achieving the wide-range output voltage. It effectively overcomes the disadvantages of the traditional voltage source and current source inverter [17]. Figure 1 shows the topology of ZSI, including DC power, Z-source single-phase full-bridge inverter, LCL filter, etc.…”

Section: System Topology Modelmentioning

confidence: 99%

DC Component Suppression of Grid-Connected Z-Source Inverter Based on Disturbance Observer

Lin

et al. 2022

Energies

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Regarding the problems of resonance and direct current (DC) components when the Z-source inverter (ZSI) without an isolation transformer is connected to the grid through an LCL filter, this paper proposes a novel DC component suppression strategy for a grid-connected ZSI based on the split capacitor method of disturbance observer (DOB). The split capacitor method is utilized to convert a third-order LCL filter into a first-order one to eliminate the resonance problem. The DC component of the inverter output voltage is regarded as an external disturbance, and the employed DOB is used to observe it, which is fed forward to suppress the DC disturbance component. Various comparison results of the simulation and experiment show that the proposed control strategy can effectively reduce grid-connected DC components injected into the grid at less than 0.5%, which decreases the DC component from 1.8% to 0.1%.

show abstract

Section: System Topology Modelmentioning

confidence: 99%

DC Component Suppression of Grid-Connected Z-Source Inverter Based on Disturbance Observer

Lin

et al. 2022

Energies

View full text Add to dashboard Cite

show abstract

Investigation on Z-Source Inverter Topologies for Grid-Tied Solar Photovoltaic Systems

Cited by 1 publication

References 13 publications

DC Component Suppression of Grid-Connected Z-Source Inverter Based on Disturbance Observer

DC Component Suppression of Grid-Connected Z-Source Inverter Based on Disturbance Observer

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