AC solar inverter for solar generation system: solar panels, charge controller, inverter and battery together form the inverter is a power conversion device, inspired by the inverter can be divided into self-excited oscillation inverter And he excited oscillation inverter.
AC power generation system of solar energy panels by the sun, charge controllers, inverters and batteries together form; solar solar inverter.Do not include inverter DC power system. Inverter is a power conversion device, inspired by the inverter can be divided into self-excited oscillation inverter and his excited oscillation inverter. Main function is to reverse the battery’s DC into AC. Through the full bridge circuit, generally modulated SPWM processor, filter, boost, etc., are with the lighting load frequency, rated voltage AC sine match for the system end-users. With inverters, you can use DC battery to provide AC electrical appliances.
Type of Solar inverter
Centralized Solar Inverter
10kW) systems, many parallel PV strings are connected to the same concentration of the inverter DC input terminal, the general use of large power IGBT three phase power photovoltaic inverter power stations (> 10kW) systems, many parallel PV strings are connected to the same concentration of the inverter DC input terminal, the general use of large power IGBT three phase power module, the use of smaller power field effect transistors, while the controller using the DSP to improve the conversion quality of the output power, making it very close to the sine wave current. Most important feature is the system’s power and low cost. But by the PV group and part of the string matching the impact of shading, resulting in the entire PV system efficiency and power capacity. At the same time the reliability of the photovoltaic power generation system of photovoltaic cells by a group of poor working conditions. The latest research is to use space vector modulation control, and the development of new inverter topology connections to get the high partial load efficiency of the case. In SolarMax (Shohreh Mike) to focus on the inverter, can be attached to a photovoltaic array interface box, for each string of a string of photovoltaic panels to monitor, such as a set of strings which is not working properly, the system will This information reached the remote controller, this can be addressed through a bunch of remote control to stop working, which will not be a string of failures and reduce the PV strings and influence the work of the entire photovoltaic system and energy output.
Group string Solar Inverter
Group of string inverters have become the international market is now the most popular inverter. Group string inverter is based on the concept based on modular, each PV strings (1kW-5kW) through an inverter, the DC side has a maximum peak power tracking in parallel and in the exchange of side-grid solar inverter schematic diagram
. Many large-scale photovoltaic power plants group string inverter. Advantage of differences from strings between the module and shading effects, while reducing the optimal operating point of PV modules and inverter mismatch, thereby increasing the generating capacity. These technical advantages of the system not only reduces costs, increases system reliability. Meanwhile, the group introduced between strings “master – slave” concept, making a single string of energy in the system can not make the work of a single inverter case, several groups of PV group strung together, so that one or a few work to produce more power. The concept of the latest of several between the inverter to form a “team” instead of “master – slave” concept, making the reliability of the system one step further. Currently, no string inverter transformer group accounted for a dominant position.
Multiple string Solar Inverter
Multiple string inverters are set to take a centralized inverter and the advantages of string inverters, to avoid its shortcomings, can be applied to a few kilowatts of photovoltaic power stations. In the multiple string inverters, including the peak power of different single track and DC to DC converter, the DC to DC through a regular exchange of the inverter into alternating current electricity grid to the Internet. PV strings of different ratings (for example: different power ratings, each string of the number of different components, different component manufacturers, etc.), different sizes or different technology, photovoltaic modules, in different directions strings (such as: East, South and West), a different angle or shading, can be connected in a common inverter, the same string of each group are working in their respective peak on maximum power. At the same time, reduce the length of the DC cable, will cover between strings and the shadow of differences between strings minimize losses caused.
Component Solar Inverter Inverter is the component of each PV module is connected with an inverter, and each component has a single maximum peak power tracking, so that the component and inverter with better. Typically used for 50W to 400W photovoltaic power stations, the total efficiency is lower than group string inverter. Because it is paralleled in the exchange, which increased the exchange of the complexity of the connection side, difficult to maintain. Need to be addressed is how the other more effective and power grid, the simple way is directly through the common AC outlet to the grid, so that you can reduce the cost and installation of equipment, but often the safety standards throughout the network may not allow doing so, the power company generating devices may be directly opposed to the average home user connected to the common outlet. Another and security-related factor is the need to use isolation transformers (high or low), or allows the use of non-transformer type inverter. The inverter in the most widely used in glass curtain wall. The efficiency of the Solar Inverter
The efficiency of solar power inverter that due to the demand for renewable energy, solar inverter (inverter photovoltaic) market is growing. These inverters require high efficiency and reliability. These inverter circuits used in power were investigated, and recommended switching and rectifier for the best choice. The general structure of optical inverter shown in Figure 1, there are three different inverters available. Sunlight through the solar modules connected in series, each module contains a set of tandem solar cells (Solar Cell) unit. Solar modules generate DC (DC) voltage of several hundred volts in magnitude, the values are based on an array of light modules, the battery temperature and the number of modules in series may be.
The primary function of this type of inverter is the input DC voltage is converted to a stable value. This feature is achieved through the boost converter, and the need to boost switch and boost diode. In the first structure, the boost stage is followed by a full-bridge isolated converter. Full-bridge transformer is to provide isolation. Output on the second full-bridge converter is used to from the first-class full-bridge DC-DC converter converted into AC (AC) voltage. The output then by an additional two-contact relay switch connected to the AC power network before being filtered, the aim is to provide a safe event fault isolation and quarantine during the night and the power grid. The second structure of a non-isolated solutions. One, AC AC voltage from the boost stage output DC voltage directly. The third structure, using the power switch and power diode innovative topology, the step-up and the AC part of the functional integration of the exchange have a special topology in spite of the conversion efficiency of solar panels is very low, so that the efficiency of the inverter as possible close to 100% is very important. In Germany, installed in the south-facing roof 3kW series estimated annual power generation module 2550 kWh. If the inverter efficiency from 95% to 96%, more than a year can generate electricity 25kWh. The solar modules with additional cost of generating this 25kWh an inverter with a considerable increase. The efficiency from 95% to 96% will not be doubled so that the cost of the inverter, so the inverter is more efficient to invest in is the inevitable choice. The emerging design, the most cost-effective to improve the inverter efficiency is the key design criteria. As for the reliability and cost of the inverter are two other design criteria. Higher efficiency can reduce the load cycle temperature fluctuations, thereby enhancing the reliability, therefore, these guidelines are actually associated. The use of the module will also improve reliability.
Solar Inverter, PV Inverter
Posted by admin in News
Solar Inverter, PV Inverter
What is a solar inverter?
AC solar inverter for solar generation system: solar panels, charge controller, inverter and battery together form the inverter is a power conversion device, inspired by the inverter can be divided into self-excited oscillation inverter And he excited oscillation inverter.
AC power generation system of solar energy panels by the sun, charge controllers, inverters and batteries together form; solar solar inverter.Do not include inverter DC power system. Inverter is a power conversion device, inspired by the inverter can be divided into self-excited oscillation inverter and his excited oscillation inverter. Main function is to reverse the battery’s DC into AC. Through the full bridge circuit, generally modulated SPWM processor, filter, boost, etc., are with the lighting load frequency, rated voltage AC sine match for the system end-users. With inverters, you can use DC battery to provide AC electrical appliances.
Type of Solar inverter
Centralized Solar Inverter
10kW) systems, many parallel PV strings are connected to the same concentration of the inverter DC input terminal, the general use of large power IGBT three phase power photovoltaic inverter power stations (> 10kW) systems, many parallel PV strings are connected to the same concentration of the inverter DC input terminal, the general use of large power IGBT three phase power module, the use of smaller power field effect transistors, while the controller using the DSP to improve the conversion quality of the output power, making it very close to the sine wave current. Most important feature is the system’s power and low cost. But by the PV group and part of the string matching the impact of shading, resulting in the entire PV system efficiency and power capacity. At the same time the reliability of the photovoltaic power generation system of photovoltaic cells by a group of poor working conditions. The latest research is to use space vector modulation control, and the development of new inverter topology connections to get the high partial load efficiency of the case. In SolarMax (Shohreh Mike) to focus on the inverter, can be attached to a photovoltaic array interface box, for each string of a string of photovoltaic panels to monitor, such as a set of strings which is not working properly, the system will This information reached the remote controller, this can be addressed through a bunch of remote control to stop working, which will not be a string of failures and reduce the PV strings and influence the work of the entire photovoltaic system and energy output.
Group string Solar Inverter
Group of string inverters have become the international market is now the most popular inverter. Group string inverter is based on the concept based on modular, each PV strings (1kW-5kW) through an inverter, the DC side has a maximum peak power tracking in parallel and in the exchange of side-grid solar inverter schematic diagram
. Many large-scale photovoltaic power plants group string inverter. Advantage of differences from strings between the module and shading effects, while reducing the optimal operating point of PV modules and inverter mismatch, thereby increasing the generating capacity. These technical advantages of the system not only reduces costs, increases system reliability. Meanwhile, the group introduced between strings “master – slave” concept, making a single string of energy in the system can not make the work of a single inverter case, several groups of PV group strung together, so that one or a few work to produce more power. The concept of the latest of several between the inverter to form a “team” instead of “master – slave” concept, making the reliability of the system one step further. Currently, no string inverter transformer group accounted for a dominant position.
Multiple string Solar Inverter
Multiple string inverters are set to take a centralized inverter and the advantages of string inverters, to avoid its shortcomings, can be applied to a few kilowatts of photovoltaic power stations. In the multiple string inverters, including the peak power of different single track and DC to DC converter, the DC to DC through a regular exchange of the inverter into alternating current electricity grid to the Internet. PV strings of different ratings (for example: different power ratings, each string of the number of different components, different component manufacturers, etc.), different sizes or different technology, photovoltaic modules, in different directions strings (such as: East, South and West), a different angle or shading, can be connected in a common inverter, the same string of each group are working in their respective peak on maximum power. At the same time, reduce the length of the DC cable, will cover between strings and the shadow of differences between strings minimize losses caused.
Component Solar Inverter
Inverter is the component of each PV module is connected with an inverter, and each component has a single maximum peak power tracking, so that the component and inverter with better. Typically used for 50W to 400W photovoltaic power stations, the total efficiency is lower than group string inverter. Because it is paralleled in the exchange, which increased the exchange of the complexity of the connection side, difficult to maintain. Need to be addressed is how the other more effective and power grid, the simple way is directly through the common AC outlet to the grid, so that you can reduce the cost and installation of equipment, but often the safety standards throughout the network may not allow doing so, the power company generating devices may be directly opposed to the average home user connected to the common outlet. Another and security-related factor is the need to use isolation transformers (high or low), or allows the use of non-transformer type inverter. The inverter in the most widely used in glass curtain wall.
The efficiency of the Solar Inverter
The efficiency of solar power inverter that due to the demand for renewable energy, solar inverter (inverter photovoltaic) market is growing. These inverters require high efficiency and reliability. These inverter circuits used in power were investigated, and recommended switching and rectifier for the best choice. The general structure of optical inverter shown in Figure 1, there are three different inverters available. Sunlight through the solar modules connected in series, each module contains a set of tandem solar cells (Solar Cell) unit. Solar modules generate DC (DC) voltage of several hundred volts in magnitude, the values are based on an array of light modules, the battery temperature and the number of modules in series may be.
The primary function of this type of inverter is the input DC voltage is converted to a stable value. This feature is achieved through the boost converter, and the need to boost switch and boost diode. In the first structure, the boost stage is followed by a full-bridge isolated converter. Full-bridge transformer is to provide isolation. Output on the second full-bridge converter is used to from the first-class full-bridge DC-DC converter converted into AC (AC) voltage. The output then by an additional two-contact relay switch connected to the AC power network before being filtered, the aim is to provide a safe event fault isolation and quarantine during the night and the power grid. The second structure of a non-isolated solutions. One, AC AC voltage from the boost stage output DC voltage directly. The third structure, using the power switch and power diode innovative topology, the step-up and the AC part of the functional integration of the exchange have a special topology in spite of the conversion efficiency of solar panels is very low, so that the efficiency of the inverter as possible close to 100% is very important. In Germany, installed in the south-facing roof 3kW series estimated annual power generation module 2550 kWh. If the inverter efficiency from 95% to 96%, more than a year can generate electricity 25kWh. The solar modules with additional cost of generating this 25kWh an inverter with a considerable increase. The efficiency from 95% to 96% will not be doubled so that the cost of the inverter, so the inverter is more efficient to invest in is the inevitable choice. The emerging design, the most cost-effective to improve the inverter efficiency is the key design criteria. As for the reliability and cost of the inverter are two other design criteria. Higher efficiency can reduce the load cycle temperature fluctuations, thereby enhancing the reliability, therefore, these guidelines are actually associated. The use of the module will also improve reliability.