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24V to 220V 1000W DC AC sine wave inverter for photovoltaic solar system    

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1000W dual stage DC-AC converter, suitable for use in battery powered uninterruptible power supplies (UPS) or photovoltaic (PV) standalone systems. The converter is fed by a low DC input voltage varying from 20 V to 28 V and is capable of supplying up to 1 kW output power on a single-phase AC load.

These features are possible thanks to a dual stage conversion topology including an efficient step-up push-pull DC-DC converter, to produce a regulated high-voltage DC bus and a sinusoidal H-Bridge PWM inverter to generate a 50 Hz, 230 Vrms output sine wave.

Other relevant features of the proposed system are high power density, high switching frequency, galvanic isolation and efficiency greater than 90% over a wide output load range.

      Download schematics (PDF):

     1 kW dual stage DC-AC converter based on the STP160N75F3


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