mppt vs pwm
Hi, A nice little video comparing mppt vs pwm with the batteries in bulk mode. mppt vs pwm
Forum Discussion
Salvo wrote:
Your confusion stems from the fact that solar panels are not voltage sources but current sources. In bulk mode, the panel is directly connected to the battery. The panel voltage is equal to battery voltage. As battery voltage rises, so does the panel voltage. When the battery voltage reaches the absorption set point, pwm action begins.
When using a pwm charge controller, panel voltage is never at 17V. Panel voltage has two states, either Vbat or Voc (panel open circuit voltage).
^^This has described what has puzzled me about PWM charging when in bulk mode, thank you.
