Phase-locked loop technology Using the principle of feedback control to achieve frequency and phase synchronization is called phase lock. Its goal is to provide a current reference signal with high sine degree to achieve unit power factor operation of the photovoltaic grid-connected power generation system, that is, the grid current is synchronized with the grid […]
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In order to ensure the stable operation of the power grid and freedom from pollution, countries around the world have put forward strict requirements on the quality of the grid-connected current of photovoltaic grid-connected systems. And in terms of total harmonic content, single harmonic content and power factor, the quality of the current into the […]
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1. Maximum power point tracking technology The efficiency of the photovoltaic power generation system is the product of the photovoltaic conversion efficiency of the solar panel, the maximum power point tracking (MPPT) efficiency and the inverter efficiency. Improving the efficiency of MPPT is also of great significance to the efficiency improvement and cost reduction of […]
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1. Leakage current suppression technology Because it does not contain high-frequency or low-frequency transformers, non-isolated grid-connected inverters have the advantages of high conversion efficiency, small size, light weight and low cost. However, non-isolated inverters lead to electrical connections between photovoltaic panels and the large grid. Due to the parasitic capacitance of the solar panel to […]
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The electric energy conversion device in the photovoltaic power generation system is a core component. In photovoltaic grid-connected applications, grid-connected inverters are usually used to realize the power transfer from photovoltaic cells to the grid. The composition of the grid-connected inverter mainly includes the inverter power circuit, the grid-connected filter and the grid-connected controller. Among […]
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Judging from the current installation costs of several major new energy power generation equipment, the cost of photovoltaic power generation equipment is still the highest. In the current situation where the cost reduction of solar cells is restricted by technical factors, improving the conversion efficiency and output power utilization efficiency of photovoltaic grid-connected inverters is […]
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With the increasing depletion of conventional energy sources such as coal, oil, and natural gas, a variety of sustainable clean energy sources, such as solar energy, wind energy, and biomass energy, have become research hotspots as alternatives. Among them, solar energy is recognized as the most ideal sustainable, green and environmentally friendly energy because of […]
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