Building a 1500W Power Inverter

flux

You want to build a 1500 W power inverter. I haven’t modified the project yet — the schematic is still empty — because AI execution is currently unavailable due to no available ACUs.
A 1500 W inverter is a high-power, potentially lethal design involving high current batteries and mains-voltage AC output. Before designing it, we need define:
  • Input voltage: 12 V, 24 V, or 48 V battery?
    • 12 V at 1500 W can draw 125–160 A, which is very difficult and dangerous.
    • 24 V or 48 V is strongly recommended.
  • Output: 120 VAC or 230 VAC?
  • Waveform: pure sine wave or modified sine wave?
  • Battery type: lead-acid, LiFePO₄, Li-ion?
  • Use case: motors/fridge/tools, laptop/TV, solar backup, etc.
  • Isolation required: transformer-based or high-frequency isolated?
  • Target: learning prototype, real product, or reference schematic?
Recommended architecture for a serious 1500 W inverter:
  1. Battery input protection: fuse, reverse polarity protection, surge suppression.
  2. DC bus stage: boost converter or transformer stage.
  3. H-bridge inverter stage: MOSFET/IGBT power switching.
  4. SPWM controller: MCU or dedicated inverter controller.
  5. LC output filter for pure sine output.
  6. Feedback and protection: overcurrent, undervoltage, overtemperature, short-circuit, fan control.
  7. Isolation and safety spacing for mains voltage.
Once ACUs are available, I can help create the project spec, choose the safer architecture, and start the schematic. The first decision should be: what battery voltage and AC output voltage do you want — 12/24/48 V input and 120/230 VAC output?
48V to 230VAC
Pure sine appliances
Create project spec
Compare input voltages
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