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Add per-consumer accepted import tolerance for wallboxes

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With a 4.6kW inverter and 4kW WallboxB + ~450W house load, any PV dip
causes brief grid import and would trigger shutdown/restart cycling.

New config: wallbox_a_accepted_import_w / wallbox_b_accepted_import_w
WallboxB set to 600W: engine skips shutdown if import <= 600W, keeping
the car charging through short cloud shadows. WallboxA disabled (2kW
leaves sufficient inverter headroom without needing tolerance).

Logic: shutdownLastConsumer checks per-consumer tolerance before
applying min-runtime and initiating turn-off.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Lutz FInsterle
2026-04-06 19:34:18 +02:00
parent 009f8b05f3
commit fc535d395c
3 changed files with 28 additions and 5 deletions
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configs/ems-config.yaml
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@@ -81,6 +81,8 @@ consumers:
compressor_idle_w: 500 # heat pump compressor below this = idle (W); running starts at ~2700W, so 500W cleanly separates idle (0W) from running
wallbox_min_charge_w: 50 # wallbox below this = car not charging (W)
idle_cycles: 3 # consecutive idle cycles before early release (~6 min at 2-min poll)
wallbox_a_accepted_import_w: 0 # tolerate this much grid import while WallboxA is running (0 = disabled; WallboxA is 2kW, inverter headroom is sufficient)
wallbox_b_accepted_import_w: 600 # tolerate up to 600W import while WallboxB runs (4kW wallbox + 450W house > 4.6kW inverter max on PV dips)
# Season detection
season: