The
inverter is the brain of the photovoltaic power generation system. During the power generation process, the photovoltaic array emits direct current, but most of the loads are alternating current. The DC power supply system has great limitations, and it is inconvenient to replace the voltage, and the load application range is also Limited, except for specific electricity consumption, more or less the use of
inverters to convert direct current to alternating current. Convert the direct current generated by the photovoltaic panels into alternating current and transmit it to the load or the power grid, and has the corresponding protective function of the power equipment.
Photovoltaic inverters are mainly composed of power modules, transformers, circuit breakers, control boards, reactors, filters, contactors, and integrated cabinets. The production includes electronic component processing, whole machine installation and debugging, testing and packaging. and other processes, its development depends on the development trend of power technology, semiconductor component technology and control technology.
For photovoltaic inverters, improving the conversion efficiency of power supply is an eternal topic in the industry. When the efficiency of the system is higher, almost reaching 100%, the efficiency improvement will follow the price reduction. Therefore, how to maintain high efficiency? efficiency and maintaining a good price advantage will be the key at this stage.
Improving the efficiency of the overall inverter system has also become another key to solar energy systems compared to efforts to improve inverter efficiency. In a solar array, when a shadow of 2%-3% of the area appears, for an inverter with an MPPT function, when the output power of the system is poor, there will even be a power reduction of about 20%. , in order to be able to integrate into a single or partial photovoltaic module in a similar situation.
In general, the development of inverter technology in the future is accompanied by the development of electronic power technology, microelectronic technology and modern control theory. With the progress of the times, inverter technology is developing in the direction of greater power, higher frequency, better efficiency and smaller size.
