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With the development of science and technology and the concept of low-carbon environmental protection is deeply rooted in the hearts of the people, photovoltaic transformation in the home is also an increasingly mature technology. Household photovoltaic power generation is a kind of green renewable energy, which uses photovoltaic modules to convert light radiation into Electric energy has been gradually recognized and accepted by the public at home and abroad in recent years. Unlike traditional energy sources such as thermal power and hydropower, photovoltaic power generation can be used not only commercially, but also in ordinary households.
The household power generation system is generally composed of a photovoltaic array composed of solar cell components, a solar charge and discharge controller, a battery pack, an off-grid inverter, a DC load and an AC load, etc. If the output power is AC 220V or 110V, an inverter is also required. The photovoltaic square array converts solar energy into electrical energy under the condition of light, supplies power to the load through the solar charge and discharge controller, and charges the battery pack at the same time; when there is no light, the battery pack supplies power to the DC load through the solar charge and discharge controller. At the same time, the battery should directly supply power to the independent inverter, which will be converted into AC power through the independent inverter to supply power to the AC load.
Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. The key element of this technology is the solar cell. The solar cells are packaged and protected after being connected in series to form a large-area solar cell module, and then cooperate with power controllers and other components to form a photovoltaic power generation device. The advantage of photovoltaic power generation is that it is less restricted by region, because the sun shines on the earth; photovoltaic system also has the advantages of safety, reliability, no noise, low pollution, no need to consume fuel and erect transmission lines to generate electricity and supply power on site, and the advantages of short construction period.
Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to directly convert sunlight energy into electrical energy. Regardless of whether it is used independently or connected to the grid, the photovoltaic power generation system is mainly composed of three parts: solar panels (components), controllers and inverters. They are mainly composed of electronic components and do not involve mechanical parts. Therefore, photovoltaic power generation equipment Extremely refined, reliable, stable, long life, easy to install and maintain.
In 2014, the conversion efficiency of the most advanced photovoltaic inverters could reach 98%. Among them, string inverters will be used in residential or medium-sized photovoltaic systems, while central inverters will be used in Large commercial systems and even grid-level markets. The market share of central inverters and series inverters is 50% and 48% respectively, while the market share of micro inverters is less than 2%. Therefore, household photovoltaics will have a wider market demand.
In 2017, household photovoltaic continued to lead the distributed photovoltaic market, and it is becoming a place where companies and entrepreneurs from all walks of life seek gold and pursue their dreams. The market prospect has already appeared! Industry organizations predict that in 2018, the installed volume of household photovoltaic systems will inevitably increase at an accelerated rate. The cumulative installed volume is expected to reach 1-1.5 million sets, and the installed capacity will approach 6GW, which will become a new engine driving the entire photovoltaic industry. For a large number of people who are determined to start a business or start a second business, the home photovoltaic market has infinite possibilities.
