260W grid tie micro inverter  On Grid Solar Inverter with MPPT Function 

Main Techonology Highlight of Inverter

System function

1, Power line carrier-current communication

 

By using electric power as a carrier of AC alternating current, can modulate high-frequency and carrier frequency (60KHz) in AC wire transmission and can achieve the communication/ newsletter between inverters or between inverter and computer. And it can transfer the power data and the brightness date of the sunshine in the real-time. Also monitor all functions of inverter.

 

2, 6-grade power search

 

In overcast weather, the solar battery’s output current is extremely tiny, then inverter will automatic open 6-grade power search function.

 

3, Wide voltage input(22-50VDC)

 

Achieve wide voltage input.

 

1) DC voltage input:22-50VDC

 

2) Second level power variable voltage conversion

 

4, High-frequency two-way and one-way grid function

 

1)High frequency direct modulation, AC half wave synthesis

 

2)Two-way grid means: Load consume directly. And can reverse AC current transmission.

 

5, Kinds of frequency output function.

 

(1)It can apply to 50Hz and 60Hz frequency of AC.

 

(2)Frequency range: 48Hz ~ 63Hz

 

6, Directly connected to the solar panels (do not need to connect the battery)

 

Using precise Dynamic differential pressure type MPPT function, APL functions, the inverter automatically adjust the solar panels of maximum output power,simply connect the solar panel to the grid inverters. Do not need to connect the battery.

 

7, AC 0 angle with high precision auto-detection

 

AC phase angle of 0 through isolation amplifier then input to the MCU for high-precision detection and analysis. The phase shift rate is less than 1%, thus achieve high-precision with phase modulation AC output together.

 

8, Synchronous High-frequency Modulation

 

In the process of the grid, usually adapt the same phase angle in parallel. (ie, When the two-phase alternating current total is equal to 0.Use switch to combination the two AC fusion) and the product is rectified AC half-frequency AC to 100Hz first, then the machine use the high frequency current in the circuit and semi-100Hz frequency alternating current generated combination, to achieve high-frequency modulation.

 

9, Pure Sine Wave Output

 

Use SPWM directly to make pure sine wave output.

 

(1), Output waveform: Adopt complementary PWM to push-pull pure sine wave.

 

(2), Generate means: enhancement-mode SPWM

 

10, Automatic Sensing Function Solar Luminosity

 

Use the latest luminosity perception operation technology. The different illuminate angle and intensity of the solar panel will produce different current output. Use advanced CPU to operate the different intensity of illumination.

 

11, Power Automatically Locked (APL)

 

In different current fluctuations, we should use the MPPT function. When the MPPT function adjusted to the maximum power point, the product automatically powers locked in maximum power point, then made the output power more stable.

 

12, Automatically Adapt To Different Load

 

Adapt to any of the power load.

 

13, Constant Current, Constant Power

 

This product is constant current, constant output power, without any overload, over-current phenomenon.

 

14, Automatically Shut Down When The Power Grid Fault

 

When the city power system is in failure, the inverter will automatically turn off the output.

 

(1)Current Limit Protection

 

(2)Current limit

 

15, Stack Multiple Machines

 

Multiple small power inverters in parallel can achieve large output power.

 

16, High-Frequency High Conversion Rate

 

Adapt high frequency converter, the output more efficient.

 

17, Maximum Power Point Tracking (MPPT)

 

Because the current intensity and the voltage changes at any time, if there is no power point tracking, there will be a lot of problems. In the past time, usually adopt a solar controller, but this product uses high-precision (MPPT) operation power, automatic and immediate adjust the solar panels output power at the maximum output point, then achieve a stable output purposes. MPPT is for short of "Maximum Power Point Tracking". It means the controller can sense the voltage of the solar panels on time, and can track the highest voltage and current (VI).Then made the inverter discharge to power grid with the highest efficiency.

 

Now let us contrast the difference of MPPT solar energy grid inverter and traditional inverter. The traditional solar inverter is a bit like the manual gearbox. When the engine speed increase, while the gearbox gear don't increase at the same time, it will definitely affect the speed of the car. For traditional inverter speaking, the parameter output power is been set in factory. It likes a car have been fixed set on fixed 1 gears, no matter how powerfully you trample accelerator, the speed of a car is limited. While have the MPPT function it will be different, it is automatically. It will automatically adjust the gears according to the engine’ speed, so it can make cars in the most gears in a reasonable efficiency standard operation. It means the MPPT controller can track the maximum power point of solar panels in real-time then express the biggest efficiency of solar panels. The higher the voltage, the more power can be output through the MPPT. Thus improve the charging efficiency. Theoretically speaking, using MPPT, the efficiency can be increased by 50% compared with the traditional inverter. But due to environmental impact and various around energy loss, the ultimate efficiency can improve 20%-30% according to our actual testing.

 

Stack using 

 

In order to achieve higher power use requirements, this product can be stacked. Such as: 4 micro inverter of 260W stacking can achieve 1040W. And the number of the stacking is unlimited.

 

DC input

 

Input voltage range: 22V to 50V

 

Solar Panel: Recommend using the power more than 30W and the standard voltage of 36V PV panels.

 

Recommend using multiple solar panels. Solar panel in series will result in high-input voltage which will exceed the working voltage range of the inverter.

 

AC output

 

Voltage range of the inverter whose output is 220V AC.: 190V - 260V,50Hz

 

Voltage range of the inverter whose output is 110V AC.: 90V - 160V,60Hz