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PV grid-connected inverter can directly load it?
- Grid-connected inverter is like a car file, he first detects the grid waveform, can not detect not boot, and then the PV DC modulation and consistent with the grid waveform, and then hang up.s
Installation and maintenance of photovoltaic grid - connected inverter
- photovoltaic systems Power generation system used in the cable must be connected firmly, good insulation and specifications appropriate.s
Solar grid inverter does not merge into the grid, direct access to the load to the load power supply?
- The solar grid-connected inverter is not connected to the grid and can not be directly connected to the load to supply power to the load because there is no voltage.s
PV grid-connected inverter and independent inverter in the control of what is the difference
- The independent inverter in the output voltage phase amplitude of the frequency control is initially set good. Independent inverter, you should refer to off-grid inverter, do not need to consider the grid situation.s
What is the difference between a PV inverter and a solar inverter?
- The main component of the inverter is the three-phase bridge converter. The main purpose of the grid-connected inverter is to change the power to DC and change the AC power. The main purpose is to improve the power quality (because the wind power generation is very larges
The working principle of photovoltaic grid - connected inverter
- Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit, the power transistor to adjust the output pulse width, the output AC voltage RMS that changes. Since the circuit has a freewheeling circuit, even if the inductive load, the output voltage waveform will not be distorted. The disadvantage of this circuit is that the upper and lower arms of the power transistor are not common, so you must use a special drive circuit or use isolated power supply. In addition, in order to prevent the upper and lower arm co-conduction, must be designed to turn off after the conduction circuit, that must be set dead time, the circuit structure is more complex.s
In a photovoltaic grid-connected project, the role of the inverter is to convert the voltage into AC 220V or 380V for the grid, since the transformer will raise the voltage again
- Unless the power is not issued for their own use, is to be sent to other areas, it needs to boost, such as the western region of those large power stationss
What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
- Off-grid inverter is equivalent to their own to establish an independent small power grid, mainly to control their own voltage, is a voltage source.s
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