Transformerless DVR Topology Based on Multilevel Inverter with Reduced Number of Switches

ABSTRACT:

In this paper, a transformerless dynamic voltage restorer (DVR) in light of the staggered inverter is proposed. This staggered inverter utilizes decreased number of switches. Therefore, the proposed DVR has bring down number of switches in correlation with other staggered inverter based DVR topologies. Likewise, it has bring down misfortune and cost because of no requirement for infusion transformers. As reenactment results utilizing Matlab/Simulink programming will appear, the proposed DVR can adjust for voltage lists, swells and glimmers.

  

CIRCUIT DIAGRAM:

Fig. 1. Proposed DVR circuit configuration.

  

EXPECTED SIMULATION RESULTS:

Fig.2 Voltage sag and swell compensation; from top to bottom, source voltage, DVR output voltage before filtering, filtered injection voltage and compensated load voltage.

Fig 3. Voltage flicker compensation; from top to bottom, source voltage, DVR output voltage before filtering, filtered injection voltage and compensated load voltage.

 

CONCLUSION:

In this paper, a transformerless DVR dependent on the staggered inverter was proposed. Because of utilizing this inverter, the proposed DVR has bring down number of switches in examination with other staggered DVR topologies. Working standards and the power circuit of the proposed DVR was clarified. The DVR was displayed and furthermore control and exchanging system was talked about in subtleties. At last, recreation results demonstrated the DVR capacities in remunerating voltage lists, swells and glimmer.

 

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