SIGMA 2.0 MPPT Controller 30A, 150VDC

The Sigma 2.0 MPPT controller with Maximum Power Point Tracking (MPPT) technology is used in off-grid solar system.  Adopting advanced tracking algorithm, it can get the maximum power point of solar module to improve the efficiency of whole system.  The controller optimize the controlling within battery charging to extend battery life. Self diagnostics and electronic protection can avoid mistakes within installation.

Sigma 2.0 MPPT charge controller is different than the traditional charge controllers in that they are more efficient and in many cases more feature rich.  Sigma MPPT charge controller allow your solar panels to operate at their optimum power output voltage, improving their performance by as much as 30%.  Traditional charge controllers reduce the efficiency of one part of your system in order to make it work with another.

How Do Sigma 2.0 MPPT Controllers Increase Charge Current?

Sigma 2.0 MPPT controller increase charge current by operating the PV module in a manner that allows the module to produce all the power it is capable of a conventional charge controller simply connects the module to the battery when the battery is discharged.  When the 75W module in this example is connected directly to a battery charging at 12 volts its power production is artificially limited to about 53 watts.  This wastes a whopping 22 watts or nearly 30% of the available power!

Patented MPPT technology used in Sigma MPPT controller operates in a very different fashion. The Sigma MPPT controller continually calculates the module’s maximum power voltage, in this case 17 volts. It then operates the module at its maximum power voltage to extract maximum power.  The higher power extracted from the module is then provided to the battery in the form of increased charge current.  In conditions where extra PV power is not available, Sigma MPPT controller will operate as a conventional controller with very low voltage drop.

The actual charge current increase you will see varies primarily with module temperature and battery voltage.  In comfortable temperatures, current increase typically varies between 10 to 25%, with 30% or more easily achieved with a discharged battery and cooler temperatures.  What you can be sure of is that Sigma MPPT charge controller will deliver the highest charge current possible for a given set of operating conditions.

Key Features and Benefits:

• Double crest or multi crest tracing technique design, when the solar panel is under shadow or part of the solar panel is damaged, multi crest will turns up in I-V curve, the controller can still trace the Max. Power point.
• Built-in maximum power point tracking algorithm which could promote the energy utilization efficiencyof pv system. The charging efficiency is 15%~20% higher than PWM mode.
• Adopting sorts of tracking algorithm to track the best working point of the I-V curve promptly and accurately, the MPPT efficiency could reach to 99.9%.
• Adopting advanced digital power supply technology which make the energy conversion efficiency reach up to 97%.
• Four stage charging mode: MPPT-equalizing charge-boost voltage charge-floating charge.
• With current-limiting charging mode, when the power of solar panel is oversized and charging current exceeds the rated current, the controller will lower charging power, which enable the system to work under the rated charging current.
• Have the fault code indication, it helps user confirm the system fault.
• It can connect with LCD screen monitoring and the controller parameters is amendable.
• Various load control methods to improve the system’s flexibility.
• With temperature compensation function to adjust the charge and discharge parameters automatically, which could improve the life of the battery.
• Various system protection function. Including over-charge, over-discharge, over-load, over-heat, the battery reverse connection protection and so on.

Download: User Manual (Please click to download)