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dingo35 / SmartEVSE-3.5

Smart Electric Vehicle Charging Station (EVSE)
MIT License
38 stars 13 forks source link

CP duty cycle calibration/offset #64

Closed demerstraat closed 2 months ago

demerstraat commented 2 months ago

Describe the bug

noticing consistent 5-6% offset between "CP current setpoint" as sent by EVSE via CP vs. actual current drawn by EV OBC. e.g. setpoint to charge = 16A, actual current drawn = 15.3A.

the same offset is present whether in SOLAR / SMART / NORMAL mode

also noticed that "MAINS L1" seems to be within 0.1A of "SET CURRENT". is it possible that PWM correction is evaluated against "MAINS L1" instead of against "EV L1" ?

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To Reproduce see above: always present

Expected behavior actual current drawn by EV ~ EVSE current setpoint

Screenshots image

dingo35 commented 2 months ago

Most EV's draw only 95% of the allowed current.

https://gathering.tweakers.net/forum/list_message/77537224#77537224

demerstraat commented 1 month ago

image offset of "10" in PMW duty did the trick to get 100% of "set value" made commit