SIGMA 2.0 MPPT Controller 20A, 150VDC
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The Sigma 3.0 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 3.0 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 3.0 MPPT Controllers Increase Charge Current?

Sigma 3.0 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.

MPPT Graph

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

  • With the advanced dual-peak or multi-peak tracking technology, when the solar panel is shadowed or part of the panel fails resulting in multiple peaks on the I-V curve, the controller is still able to accurately track the maximum power point.
  • A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.
  • A combination of multiple tracking algorithms enables accurate tracking of the optimum working point on the I-V curve in an extremely short time.
  • The product boasts an optimum MPPT tracking efficiency of up to 99.9%.
  • Advanced digital power supply technologies raise the circuit's energy conversion efficiency to as high as 98%.
  • Charging program options are available for different types of batteries including gel batteries, sealed batteries, open batteries, lithium batteries, etc.
  • The controller features a limited current charging mode. When the solar panel power exceeds a certain level and the charging current is larger than the rated current, the controller will automatically lower the charging power and bring the charging current to the rated level.
  • Instantaneous large current startup of capacitive loads is supported.
  • Automatic recognition of battery voltage is supported.
  • LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.
  • Historical data storage function is available, and data can be stored for up to a year.
  • The controller is equipped with an LCD screen with which users can not only check device operating data and statuses, but also modify controller parameters.
  • The controller supports standard Modbus protocol, fulfilling the communication needs of various occasions.
  • The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging current will decline in linear proportion to the temperature so as to curb the temperature rise of the controller, effectively keeping the controller from being damaged by overheat.
  • Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters in order to extend the battery's service life.
  • TVS lighting protection



Download: User Manual (Please click to download)



  • Item #: SIGMA3-30A

SIGMA 3.0 MPPT Controller 30A, 150VDC

Price: RM1,049.00
Sale Price: RM809.90
Availability: Out-of-Stock
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