Power Panel

Design

• STEAM_Camp_Module_Specifications#Universal_Power_Supply
• January_2020_STEAM_Camp#Day_4_-_Batteries_.2B_Welder_.2B_Power_Panel

CAD

• 

  Terminal Block Module. - FreeCAD -File:Terminalmodule.fcstd. STL -File:Terminalmodule.stl

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  Power Panel Joint. - FreeCAD -File:Joint.fcstd. STL -File:Joint.stl

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  Power Panel assembly. - FreeCAD -File:Ppassy.fcstd. STL -File:Ppassy.stl

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  3D Printed Terminal Block - FreeCAD -File:Terminalblock.fcstd. STL -File:Terminalblock.stl

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  Power Panel - FreeCAD -File:Powerpanel.fcstd

• 

  4040 heatsink. File:Heatsink.fcstd

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  40x10mm fan File:40x10fan.fcstd

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  Power Module File:Powermodule.fcstd

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  TO220 Transistor File:To220.fcstd

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  Quickpeg File:Quickpeg.fcstd. STL - File:Quickpeg.stl. Results: with 1.2 mm nozzle, feet break off easily. After breaking one, broke the second taking it off the printbed on D3D Universal. Going square.

• 

  Quickpeg v2 File:Quickpeg2.fcstd. STL - File:Quickpeg2.stl.

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  Universal Power Panel Generator - FreeCAD File: File:UniversalPowerPanelGenerator.FCStd

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  Universal Peg Array Generator -FreeCAD File: File:UniversalPegGenerator.FCStd

• 

  Universal Terminal Peg Generator File:UniversalTerminalPegGenerator.FCStd

Production Engineering Data Collection

1. Challenging print regarding retraction due to ongoing hops
2. Stringing is an issue
3. On D3D Pro - D3D v19.11 6 - File:D3d1911 6.ini. But used 1.2 mm nozzle, 1.1 walls - keeps giving the double outer line upon slicing
4. Weird artifact - only at 50-70% flow did it work (1.2 nozzle) - for some reason 100% flow spits out too much material. Never seen a case where flow rate had to be reduced to date. Settings in pertinent part:

BOM

• Power Panel Parts List
• January 2020 STEAM Camp Kits BOM

CAD Notes

• 6 ga wire (50A) is 4.1 mm diameter. [1]

Applications

• Open Source Inverter - message to Paul Neelands:

Ideally, the spec would be:

1. Division between Arduino Mega + LCD for the brains. We already use this elsewhere - https://wiki.opensourceecology.org/wiki/Universal_Controller. We use that in the 3D Printer and CNC torch table. It has an Arduino Mega underneath. Mega could also use touch LCDs so the interface is super simple.
2. Separate power circuit.
3. Power circuit is pure sine or as close as possible.
4. It is done in modules of 500W or 1kW, so you can choose how much power you want - 1-10kW
5. Modular transistor/heatsink assemblies - use one or as many as you want. Since we already use these fans and heat sinks and they work for 40W of power dissipation - can we find a 1kW power transistor that could work with these?
6. Clamp-down bus-bar for DC input like the bus bars in breaker boxes so we can attach as many gauge 6 or 4/0 feed cables as needed.
7. By default, that would make the above stackable if we have multiple power stages - and a single brain.
8. Design the system for 24 or 48V input - and once you do that, we can work out components for other voltages if needed. Ideally, the same system would work from 12-120v or such, and the adaptation to the voltage would happen in software.
9. Design with algorithm for NiFe batteries. For the next Seed Eco-Home, our likely candidate will be either 24V 100Ahr NiFe or 48V 100 Ahr NiFe. 

Links

• 3D Printed Terminal Block