An Off-Grid Photovoltaic Inverter Topology with a DC-Side Resistor

Song Zhou; Wen Bin Zhang; Wei Long; Shi Su; Yu Ting Yan

doi:10.4028/www.scientific.net/AMM.685.336

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 685An Off-Grid Photovoltaic Inverter Topology with a...

An Off-Grid Photovoltaic Inverter Topology with a DC-Side Resistor

Abstract:

Off-grid systems for household are proposed to solve problems that population in remote areas lacks electricity. In an off-grid home, electrical appliances can result in poor power quality issues working on the conventional inverter structure. In this paper, proposing an improved photovoltaic inverter structure, in which adds a resistor at DC side. The resistor can stabilize DC-side voltage and supply enough power for inductive loads. In this system, the converter and inverter are controlled by a PI controller separately. The effectiveness of the proposed structure is verified by Matlab/Simulink software based on simulation results of the conventional structure and improved structure. By comparing their DC-side voltage, load voltage waveforms, and the THD values corresponding to an inductive load, the simulation results show that the proposed structure can achieve higher power quality.

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Periodical:

Applied Mechanics and Materials (Volume 685)

Pages:

336-341

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.685.336

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Online since:

October 2014

Authors:

Song Zhou, Wen Bin Zhang, Wei Long, Shi Su, Yu Ting Yan

Keywords:

DC-Side Resistor, Improved Structure of Photovoltaic Inverter, Off-Grid System, Power Quality

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References

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