Schematic Editor3-Phase H-Bridge Converter

Parallel DC-AC Power Conversion System

Circuit Diagram

This diagram shows a parallel DC-AC power conversion system with two boost converters and H-bridge inverters. The system takes DC input from a solar panel, boosts the voltage through parallel converters, and produces three-phase AC output through parallel inverters.

PRO inverterPV+PV-PV+PV-DC+DC-Phase APhase BPhase CPV+PV-DC+DC-Phase APhase BPhase C

Key Components

  • Solar Panel:
    • DC power source providing input voltage
    • Connected in parallel to both converter stages
  • Parallel Boost Converters:
    • Two identical boost converters for load sharing
    • Each contains inductor, IGBT, and diode
    • Provides voltage elevation for the inverter stage
  • Parallel Three-Phase Inverters:
    • Two identical three-phase inverters
    • Share common DC bus connections
    • Each produces three-phase AC output

Operation

The system operates with parallel power processing:

  1. Solar Input: The solar panel provides DC power that is split between two parallel paths for better power handling capability.
  2. Parallel Boost Stage: Each boost converter processes half of the input power, sharing the load while maintaining the same output voltage through the common DC bus.
  3. Parallel Inverter Stage: The H-bridge inverters operate in parallel, each converting their portion of the DC power to three-phase AC with synchronized output.