Product Specifications

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Product Description

Overview

Quick Details

Place of Origin: Beijing, China

Brand Name: EPSOLAR/EPEVER

Model Number: Tracer4210AN

Type: MPPT

Application: Charger Controller, Collector Controller, Solar Working Station, Lighting Controller, Voltage Controller, Solar System Controller

Work Time (h): 7*24h

Max PV Power: 1200W

Max PV Voltage: 100V

Product name: EPsloar 40A MPPT Solar Charge Controller

Certificate: ce rohs

Color: Sliver gray

System voltage: 12V/24V Auto

Functions: MPPT

Control Mode: 4 stage MPPT charge mode

Display: LCD display

Key word: solar controller

Packaging & Delivery

Tracer 4210AN EPsloar 40A MPPT Solar Charge Controller 12V 520W 24V 1040W Max

Maximum Power Point Tracking Technology

Due to the nonlinear characteristics of solar array, there is a maximum energy output point (Max Power Point) on its curve. Traditional controllers, with switch charging technology and PWM charging technology, can’t charge the battery at the maximum power point, so can’t harvest the maximum energy available from PV array, but the solar charge controller with Maximum Power Point Tracking (MPPT) Technology can lock on the point to harvest the maximum energy and deliver it to the battery.

The MPPT algorithm of our company continuously compares and adjusts the operating points to attempt to locate the maximum power point of the array. The tracking process is fully automatic and does not need user adjustment.

As the Figure 1-2, the curve is also the characteristic curve of the array; the MPPT technology will ‘boost’ the battery charge current through tracking the MPP. Assuming 100% conversion efficiency of the solar system, in that way, the following formula is established:

Normally, the VMp is always higher than VBat, Due to the principle of conservation of energy, the IBat is always higher than IPV. The greater the discrepancy between VMp &VBat,the greater the discrepancy between IPV& IBat. The greater the discrepancy between array and battery, the bigger reduction of the conversion efficiency of the system, thus the controller’s conversion efficiency is particularly important in the PV system.

Figure 1-2 is the maximum power point curve, the shaded area is charging range of traditional solar charge controller (PWM Charging Mode), it can obviously diagnose that the MPPT mode can improve the usage of the solar energy resource. According to our test, the MPPT controller can raise 20%-30% efficiency compared to the PWM controller. (Value may be fluctuant due to the influence of the ambient circumstance and energy loss.)

Figure 1-2 Maximum Power Point Curve

In actual application, as shading from cloud, tree and snow, the panel maybe appear Multi-MPP, but in actually there is only one real Maximum Power Point. As the below Figure 1-3 shows:

If the program works improperly after appearing Multi-MPPT, the system will not work on the real max power point, which may waste most solar energy resources and seriously affect the normal operation of the system. The typical MPPT algorithm, designed by our company, can track the real MPP quickly and accurately, improve the utilization rate of the array and avoid the waste of resources.

Application

Connection: