2025-02-11 Meeting notes

Date

Feb 11, 2025

Participants

@Chad Pyatt
@Chris Calvelage @Kirsten Arnell @Gizem Karslioglu @Greg Chavez

Goals

Updates on:

charge controller tests - next steps
procurement of EFOY
Solar panels and mounting
Overall progress toward deliverables.
DAS updates.

Discussion topics

Item	Presenter	Notes

Item	Presenter	Notes
DAS Training	Gizem	March 11-12
Charge Controller Testing	Chad/Chris	Mitchell is working on the analysis. Delayed due to funding furlough, and some debugging. Debugging is fixed, shoot for mid-March completion. Pick up during March meeting, then schedule the ferrite bead test.
EFOY	Chad	PR approved, waiting for actual PO and procurement. Will put one on Mt. Saint Helens and will use the other for the DAS (below). The EFOY doesn’t power the DAS, it charges the battery bank, then use a DC to AC inverter to power the DAS. Basically are building a UPS because the power output from the inverters are stable. Will also build in an LVD and can have a back-up generator.
Solar Panels/Mounting (need to collaborate with Infrastructure Group)	Chad	Standard NOTA solar panel (~1800 stations use this) has a custom frame set-up (not COTS), ordered from one vendor (SolarFlexion). This has been discontinued. Need new solution with standard mounts, cable glands, still tamper resistant, etc. Chad has been working with SolarFlexion to find a 100W panel slightly the same size. Need new tamper proof solution (torx bolts are too easy to come by these days, and aluminum is very easy to cut through). Working on solution to retrofit existing stations (so new panels can use existing mounting system and maintain tamper-resistant characteristics). SolarFlexion will send two new 100W panels plus mounting hardware so Chad can mock up the new build.
Progress toward deliverables	Chad	updating CAD drawings - Kirsten look for consultant to help with this portable <1W system - will meet on Thursday DAS power requirements still need to be documented.
DAS Updates	Gizem/Chad	Haven’t been able to build a simulation because don’t have Simulink license. Continue working on EFOY power plan
Chad’s visit to the EPIC	Chad	Is thinking about coming during the week of Feb 24

Action items

@Kirsten Arnell investigate options for CAD consultant

@Gizem Karslioglu continue to work on documenting DAS power requirements

@Chris Calvelage and @Mitchell M. will continue on data analysis for charge controller noise testing

@Chad Pyatt continue procuring EFOY and working on solar panel mounts/procurement with Solar Flexion

Decisions

For now, we are going to hold off on testing the Sunwise charge controllers due to lack of use in E-scope IS field deployments.

CSP