Ldsolar TD2210 User Manual page 2

Fullest digital protection functions: Reverse connection, Overcharging,

Over-discharging, Over voltage, Overload, Short circuit.
2
16mm connectors, red and black connector distinguish plus and minus

MPPT Technology Introduction
MPPT means Maximum Power Point Tracking, it is more advanced solar
charging mode. In view of nonlinearity feature of solar panels, there is a
Maximum Power output Point(P
intensity and temperature. Using traditional PWM solar charge controller, the
voltage of solar panel will be clamped by battery, the voltage can not be
maintained at P to charge the battery, greatly reduce the utilization rate of
Max
solar panels. MPPT technology adopt high efficiency DC-DC power transform
technology, with advanced algorithm to track the MPP of solar panels in
actual time to obtain Max power from solar panel for charging battery.
Compare with PWM controller, MPPT solar charge controller could increase
the energy utilization rate 15%-30%.
The solar panel used for 12 system Vpp is 17V, due to the constant
current characteristic of solar panels, when the 12V battery is charged by solar
panel, the voltage of solar panel will be clamped by battery. If the max
charging current is 10A at this time, then the input power to the battery= 10A
x 12V =120W, not yet completely play the maximum utilization rate of solar
panels. MPPT controller could adjust the voltage and current of solar panels
to reach Max output power, the input power to the battery= 9A x 17V x
0.98(circuit exchange efficiency)=150W, it can be seen that the MPPT
controller could significantly improve the charging efficiency.
）, and this point under changing light
Max
The MPPT point under changing light intensity and temperature of
environment, The MPPT controller could adjust the MPP timely according to
different conditions.
In application the solar panel have burnt cells or shadow effect, may cause
multi MPP appearance, but only one of these point is actual MPP as shown
below.
MPPT double peaks drawing
When multi MPP points appear, if the program is not perfect, it will cause the
solar system to work in the non actual MPP points, waste most of power from
solar panel, seriously affect the normal operation of solar system. Our
company's MPPT controller could accurately track the actual MPP point in
the double peaks or multi peaks state, improve the utilization of solar array
and avoid the waste of resources.