SMPPT Installation & Operation Manual Version 1.0
7
Output voltage is 22.3V, output power is 0W. This point is the open circuit
point of solar panels.
Working point C:
Output voltage is 0V, output power is 0W. This point is the short circuit
working point of solar panels.
Working point A:
Output voltage is 13V, output power is 74W. This working point is the state
when using normal controller, and the solar panels voltage is clamped to
13V by battery.
Working point B:
Output voltage is 17.6V, output power is 92W. This point is the state when
using MPPT controller. Because of using power conversion technology, the
solar panels voltage is not clamped by battery and still works at maximum
power point.
Compare working point A & B, it is easy to find using MPPT controller can
increase the using efficiency of solar panels. Compared to normal controller,
MPPT controller can generate more power.
Figure 2-4: Voltage-Current Curve
