Why MPPT is better than PWM

   MPPT தான் அதிகளவு solar systemயில் பயன்படுத்தபடுகின்றன.
    On-Grid Solar System
    Off-Grid Solar System (MPPT charge controller)
     Power Optimizer
     MicroInverter
Above system MPPT Technology is using...

In Practically,
     MPPT system Voc is high.
         Voc - Open Circuit Voltage
          இது Solarகளை Series connect செய்து கிடைக்கப்படும் DC bus Voltage தான், அந்த system-யின் Voc.
    Voc (MPPT system)  ≥  Voc  (DC Bus Voltage)                                                                                     
    Voc of MPPT system is greater than or equal to String voltage of solar system (DC Bus Voltage).

Solar Panel 100w, Voltage of module          Voc-18V, maximum current is 5.56A,

• In PWM charger,

  Now Battery voltage is 11V , at peak condition, Solar panel voltage 18V down into 11V.

   at peak condition, Max. Current (Imax)5.56A

Power is multiply of Voltage and Current.

Power = 11*5.56= 61.16w

Battery charging now Battery voltage is 14V

at peak condition,

Power = 14*5.56 = 77.84w

• In MPPT charger,

Same condition

Now Battery voltage is 11V, at peak condition,

Solar panel Voltage 18V, Imax = 5.56A

MPPT is maximum power from Solar array,

Pmax=100w

Power can't change, Current I is increased and Voltage is reduced. It's happen in MPPT system.

Doing BULK/BOOST Converter.

Pmax = 100w

          I = 100w/13v = 7.69A
 In this system Battery Charge able voltage is reduce, Current increasing to charging, Battery fastly charging and effectively operate the system.