Views: 390 Author: Site Editor Publish Time: 2024-12-05 Origin: Site
The full name of micro-inverter is micro-photovoltaic grid-connected inverter, which generally refers to the power of photovoltaic power generation system is less than or equal to 1000 watts, with module level MPPT inverter. Micro inverter, is a separate maximum power peak tracking for each photovoltaic module, and then through the inverter into the AC power grid, compared with the centralized, series inverter and distributed inverter, micro inverter smallest volume, minimum power, general power below 1 kilowatt, so the "micro" here does not refer to the size of the inverter. It is relative to the traditional centralized inverter.
Solar photovoltaic microinverter is a device that converts direct current from a single solar cell module to alternating current. The DC power conversion of micro inverter is from a single solar module to AC, each solar cell module is equipped with inverter and converter function, each component can be converted separately, so this is called "micro inverter".
The traditional photovoltaic inverter is to combine all the DC generated by photovoltaic cells under sunlight in series and parallel, and then convert DC into AC through an inverter to access the power grid; Microinverters invert each component. Its advantage is that each component can be independently controlled by MPPT, which can greatly improve the overall efficiency, and can also avoid the DC high voltage, low light effect, and barrel effect of centralized inverters. Micro inverter is mainly suitable for distributed household use and small distributed industrial and commercial rooftop power station.
The working principle of a micro inverter includes the following steps:
1. Dc input: The direct current generated by the photovoltaic panel can be transmitted to the micro inverter through the cable.
2. Maximum Power Point Tracking (MPPT) : The micro-inverter includes MPPT function to ensure that the maximum possible power is extracted from the photovoltaic panel.
3. Inverter: converts direct current energy into AC power, and adjusts the output voltage and frequency to match the standard voltage and frequency of the grid.
4. Synchronization and grid-connection: Ensure that the generated AC power is synchronized with the grid, and automatically stop working when the grid voltage is unstable or power off to ensure safety.
1. The market size will continue to expand
As the global demand for renewable energy continues to increase, the size of the photovoltaic power generation market will continue to expand. As a key component of photovoltaic power generation systems, the market demand for micro-inverters will also grow. Especially in the field of distributed photovoltaic power generation, the application of micro-inverters will be more extensive, and the market size is expected to further expand.
2. Technological innovation will promote industry upgrading
Micro-inverters will maintain technological innovation to promote the improvement of product performance and form industry scale effects to reduce costs. On the one hand, through the application of new materials and new processes, the conversion efficiency and reliability of micro-inverters are improved; On the other hand, through the application of intelligent, networking and other technologies, the intelligent management level of micro-inverters is improved to achieve a more efficient and convenient photovoltaic power generation system operation and maintenance.
3. The industrial chain will be further improved
The industrial chain of micro inverters will also be further improved. Upstream raw material suppliers continue to improve product quality and reduce costs, providing a strong guarantee for the production of micro-inverters; Downstream PV power generation system integrators will strengthen cooperation with micro inverter enterprises to jointly promote the optimization and upgrade of photovoltaic power generation systems. At the same time, with the continuous improvement of the industrial chain, the overall competitiveness of the micro inverter industry will also be improved.