In the isolated photovoltaic grid-connected inverter, according to the working frequency of the isolation transformer, it can be divided into two types: power frequency isolation type and high frequency isolation type. 1. Power frequency isolated photovoltaic grid-connected inverter structureThe power frequency isolation type is the most commonly used structure of photovoltaic grid-connected inverters, and it […]
Basic knowledge of inverter
1. Inverter classificationThe photovoltaic power generation system is mainly composed of photovoltaic components, inverters, combiner boxes, combiner cables, box transformers and supporting equipment, among which photovoltaic inverters are one of the important equipment. According to the inverter form, photovoltaic inverters can be divided into centralized inverters, string inverters, distributed inverters and micro inverters. Among them, […]
What is an organic solar cell?
Organic solar cells are solar cells with organic materials as the core part. They mainly use photosensitive organics as semiconductor materials to generate voltage and form current through the photovoltaic effect to achieve the effect of solar power generation. The first organic photoelectric conversion device was prepared by Kearns and Calvin in 1958. Its main […]
What are the types of thin film modules?
①Silicon-based thin film moduleSilicon-based thin film batteries include amorphous silicon thin film batteries, microcrystalline silicon thin film batteries, and polycrystalline silicon thin film batteries. At present, amorphous silicon thin film battery products are important in the market. The band gap of amorphous silicon is 1.7eV, and p-type or n-type a-Si can be obtained by doping […]
What is a silicon-based thin film module?
(1) Polysilicon thin film modulesIn order to save materials and improve economy, people have been depositing polysilicon films on cheap substrates since the mid-1970s, but the grown silicon film grains are too small to make valuable solar cells. At present, the preparation of polycrystalline silicon thin film batteries mostly uses chemical vapor deposition methods, including […]
What is a polysilicon solar module?
At present, most of the polycrystalline silicon materials used in solar cells are aggregates containing a large number of single crystal particles, or are made by melting and casting waste single crystal silicon materials and metallurgical grade silicon materials. The process is to select polycrystalline bulk material or monocrystalline silicon head and tail material with […]
What is a monocrystalline silicon module?
Monocrystalline silicon modules are currently the fastest-developed photovoltaic modules and have been widely used in space and on the ground. The solar cells in the monocrystalline silicon module use high-purity monocrystalline silicon rods as raw materials, with a purity requirement of 99.999%. At present, the monocrystalline silicon modules used on the ground use solar-grade monocrystalline […]
Improve the design technology of photovoltaic power stations
The influence of design on power generation is very important, and an excellent system integration scheme plays an important role in improving the efficiency of photovoltaic power plants. Mainly explain the core technology of high-efficiency photovoltaic power generation engineering design from the aspects of photovoltaic modules, inverter selection, photovoltaic array operation mode, module inclination and […]
Innovative application form of photovoltaic power generation system
Photovoltaic power generation systems can be divided into grid-connected photovoltaic power generation systems and independent photovoltaic power generation systems according to whether they are connected to the public grid, and the following are all grid-connected photovoltaic power generation systems. In terms of application form, photovoltaic power generation projects can be divided into two categories. The […]
What are the specific ways to improve the efficiency of photovoltaic modules?
(1) Improve the original preparation process and develop new processes to increase the output of silicon raw materialsAt present, there are reports on some new process methods: vapor to liquid deposition (VLD) and molten silicon refinement. In the VLD method, trichlorosilane (SiHC3) and hydrogen (H2) are injected together into a graphite tube at 1500°C to […]