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4kW DC-AC Grid-Connected Solar Inverter

This project consists of the design, development, and verification of a two-stage inverter for photovoltaic (PV) applications. The first stage consists of a 4kW soft-switching interleaved DC-DC converter which boosts the voltage from panel input to a fixed bus voltage. The second stage is a soft-switching inverter which provides grid connectivity for the panel. The goal is to provide a high-efficiency solution for managed photovoltaic installations.
Key Advantages:
  • A dc-dc converter is utilized to avoid shut down under partial sunlight condition
  • Soft-switching dc-dc converter
  • Soft-switching dc-ac inverter
  • High efficiency

Solar Inverter System Block Diagram


Boost Converter Prototype


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Address: 220 Inventive Ln, Blacksburg, VA 24061   Tel: (540) 231-5581   Fax: (540) 231-3362

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