5kW Solar Grid-Tie Inverter
Budget: ₹12,500 – ₹37,500 INR
I’m developing a proof-of-concept grid-tie inverter that can comfortably sit in the 1 kW – 5 kW class and operate either indoors or outdoors. The unit must do more than simply sync with the mains: I want seamless battery-backup integration, high-efficiency power conversion, and a built-in remote-monitoring interface so performance data is always at my fingertips.
Here’s what I need from you. First, a complete electrical design—topology selection, control strategy, MPPT stage, and grid-synchronisation logic—with efficiency clearly prioritised across the usable load range. Second an itemised BOM with part number using readily available components. Third, embedded firmware that governs battery charging/discharging, anti-islanding protection, and real-time data streaming over Wi-Fi or Bluetooth to a simple web or app dashboard. Finally, a mechanical outline that shows how the enclosure, heatsinking, gasketing, and connectors will let the unit live happily both inside a utility room and outside on a shaded wall.
I need...
1. BOM with part number
2. Firmware.
3. Inductor , gfci , transformeres details.
4. Source code.
5. Remote monitoring using wifi.
6. Wiring Diagram .
Acceptance criteria
• ≥95 % peak conversion efficiency, documented with test data
• Stable grid tie at 230 V 50 Hz (or readily adjustable)
• Hot-swappable battery port capable of future lithium or lead-acid packs
• Remote dashboard that logs voltage, current, temperature, and fault events
• Prototype build files delivered in native CAD/ECAD formats plus ready-to-order files (Gerbers, STEP, compiled firmware)
If you have prior experience with UL 1741 / IEEE 1547-style compliance, that’s a bonus, but for now my immediate focus is a working, testable prototype.
Here’s what I need from you. First, a complete electrical design—topology selection, control strategy, MPPT stage, and grid-synchronisation logic—with efficiency clearly prioritised across the usable load range. Second an itemised BOM with part number using readily available components. Third, embedded firmware that governs battery charging/discharging, anti-islanding protection, and real-time data streaming over Wi-Fi or Bluetooth to a simple web or app dashboard. Finally, a mechanical outline that shows how the enclosure, heatsinking, gasketing, and connectors will let the unit live happily both inside a utility room and outside on a shaded wall.
I need...
1. BOM with part number
2. Firmware.
3. Inductor , gfci , transformeres details.
4. Source code.
5. Remote monitoring using wifi.
6. Wiring Diagram .
Acceptance criteria
• ≥95 % peak conversion efficiency, documented with test data
• Stable grid tie at 230 V 50 Hz (or readily adjustable)
• Hot-swappable battery port capable of future lithium or lead-acid packs
• Remote dashboard that logs voltage, current, temperature, and fault events
• Prototype build files delivered in native CAD/ECAD formats plus ready-to-order files (Gerbers, STEP, compiled firmware)
If you have prior experience with UL 1741 / IEEE 1547-style compliance, that’s a bonus, but for now my immediate focus is a working, testable prototype.