WV Grid-Tie Series
3
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.
1
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AC phase shift: < 1%
2
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Over-zero protection: 0.2 VAC
3
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AC switching: 50Hz / 60Hz
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.
1
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Modulation synthesis: half wave and full-bridge modulation synthesis (100Hz / 120Hz)
2
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Synthetic way: MOSFET full-bridge
3
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High frequency: 50KHz
Pure Sine Wave Output
Use SPWM directly to make pure sine wave output.
1
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Output waveform: Adopt complementary PWM to push-pull pure sine wave.
2
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Generate means: enhancement-mode SPWM
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 illuminance and the
data can be directly displayed on the LCD. Then you can visually see the sense of the strength of the sun unit.
Used more convenient.
1
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Luminosity sampling point
：
power sampling point
2
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High precision AD sampling: integral AD sampling method
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.
1
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Power lock: The biggest sampling point of MPPT.
Automatically Adapt To Different Load Power Factor
Adapt to any of the power load.
Constant Current, Constant Power
This product is constant current, constant output power, without any overload, over-current phenomenon.
Automatically Shut Down When The Power Output Of a Fault
When the city power system is in failure, the inverter will automatically turn off the output.
Current Limit Protection
Current limit
Stack Multiple Machines
Multiple small power inverters in parallel can achieve large output power.
High-Frequency High Conversion Rate
Adapt high frequency converter, the output more efficient.
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
