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mutovis / control-software

Software design files for controlling the hardware from https://github.com/mutovis/hardware
GNU General Public License v3.0
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the mppt's exploration region is too large #8

Closed greyltc closed 5 years ago

greyltc commented 5 years ago

@rbrenesh Creating this issue to capture previous email

rbrenesh commented 5 years ago

Adding a picture of 30s MPPT of a device for context. It seems like the lower end of the exploration is a bit too big. Reducing that should also make the exploration phase shorter as well.

Screenshot from 2019-03-14 11-47-09

greyltc commented 5 years ago

I'll make the size of the exploration region something that can be configured. I'm also working on adding a new mppt algorithm

greyltc commented 5 years ago

@rbrenesh, 03877e084ac815c0870b578ae4acdda4ceb71b60 should address this, it makes the size of the exploration region configurable (as well as the duration of the dwell phases, which were previously fixed at 10s).

It adds a new interface for configuring the max power point tracker with --mppt-params This is also how we will switch between different maximum power point tracking algorithms and configure them in the future, right now the only mppt available is basic. I imagine this configuration will become more complicated so I've made special documentation for it here: https://github.com/mutovis/control-software/blob/master/MPPT.md

The old mppt was equivalent to --mppt-params basic://7:10 that means +/- 7 degrees of exploration and 10 second dwell periods. Now for example you can do --mppt-params basic://3:10 which means you'll explore +/- 3 degrees around the max power point.

Here's +/- 7 degrees (the previous unconfigurable MPPT) for 37 seconds: Figure_1_7 and here's +/- 3 degrees with --mppt-params basic://3:10 also for 37 seconds: Figure_1_3 Don't mind the sloped power output on these graphs, that's just the battery dying on the flashlight I use to illuminate & test at my desk! ;-)

I think this should give you what you were looking for! If not, feel free to just comment here to let me know what I've missed.

I've released this in v1.0.8, so as usual yay -Sy python-mutovis-control