SOROTEC UPS

Working temperature. The working temperature of the 1 KVA solar inverter power devices directly affects the output voltage, waveform, frequency, and phase characteristics, and working temperature and environment temperature, altitude, relative humidity and the working state of the 1KVA solar inverter. Working environment. For the high frequency and high voltage home inverter, its working characteristics are related to the working environment and working conditions. At high altitude, the air is thin, prone to circuit discharge, affecting the work. It is easy to condensation in high humidity area, causing a partial short-circuit. Therefore, the 1KVA inverter provides the applicable scope of work. Normal operating conditions for solar home inverters . The ambient temperature -20 to +50 degrees, at an altitude of less than 5500m, the relative humidity is less than 93%, and no condensation. When the working environment and working temperature are beyond the scope of the above, consider ...

Rated output efficiency is defined as the ratio of the output power to the input power under the specified operating conditions, expressed as a percentage. In general, the nominal efficiency of photovoltaic home power inverters are the efficiency of a pure resistive load under the condition of 80% load efficiency. Inverter efficiency will change with the size of the load, when the load rate is lower than 20% and higher than 80%, the efficiency is lower. When standard inverter output power is greater than 75% of the rated power, the efficiency should be greater than or equal to 80%. At present, the nominal efficiency of the main inverter is between 80％ to 95％, and the efficiency is not less than 85% for the small power inverter for home use. In the design of photovoltaic power generation system, not only to choose a high efficiency home power inverters , but also through rational allocation, as far as possible to make the solar inverter system load at the best efficiency point.

With the continuous development of various new technologies,  solar powered inverter  faces a variety of challenges, mainly in the grid performance, protection functions and electromagnetic compatibility, etc.. Grid connected performance is to improve the efficiency of the grid, eliminate the DC component, reduce the current harmonics and so on. Electromagnetic compatibility is to control the voltage fluctuations, reduce electromagnetic radiation, improve the degree of interference and so on. In addition, need to consider that it shold be fast and smooth in the process of switching between the solar inverter and the city power. The above aspects are the main aspects of how to evaluate the  solar powered inverters , if several performance metrics of an inverter is very superior, then will create a very good operating environment to the solar power system, and will also provide indirectly income to power supply company.

The output end of the early  solar energy inverter  system generally installed isolation transformer, to realize voltage adjustment and electrical isolation, to ensure safe and reliable operation of the system. However, isolation transformer of large volume, high cost, high loss, affect the system efficiency. If the use of high-frequency transformer to achieve the electrical isolation of PV and grid, which can reduce the system volume, quality and cost, but will not significantly improve the efficiency of the system. Therefore, non isolated grid connected photovoltaic inverter system has become a hot research topic. It has the advantages of high efficiency, small size, light weight, low cost and so on. But the elimination of transformers build electrical connection between PV and grid, leakage current could be increased substantially, conducting radiated interference, increase the net current harmonics and loss, even to endanger the equipment and personnel. Therefore, the com...

The solar power generation system should have high reliability and security, as an important part of the solar power generation system, the inverter should have the following protection function. 1.Input under voltage protection. When the input voltage is lower than the specified under voltage value, that is less than 85% of the rated voltage, the  solar energy inverters  should be able to automatically shut down to protect and make the corresponding display. 2.Input over voltage protection. When the input voltage is higher than the prescribed over voltage disconnect value, which is higher than the rated voltage of 130%, the inverter should be able to automatically shut down to protect and make the corresponding display. 3.Over current protection. Over current protection of the solar energy inverters, it should be able to ensure that act timely when the load short circuit or current exceeds the allowable value, so that it can avoid the damage of the current. When the operat...

Solar energy inverter efficiency refers to the demand for renewable energy, solar inverter market is growing. These inverters require extremely high efficiency and reliability. The power circuit used in the inverter is investigated, and the best choice for the switch and rectifier is recommended. The solar light is irradiated on the solar module connected in series, and each module contains a series of solar cells. The solar module generates a direct current voltage at an order of magnitude of several hundred volts, depending on the light condition of the module array, the temperature of the battery, and the number of modules connected in series. The primary function of this type of solar energy inverter is to convert the input DC voltage to a stable value. This feature is achieved through a boost converter and requires a boost switch and a boost diode. In the first structure, the boost stage is followed by an isolated full bridge converter which is to provide isolation. The output...

The control strategy of grid connected solar inverter is the key to the success of the grid connected photovoltaic power supply. The control strategy of grid connected solar inverter mainly includes four methods: voltage source control, current source voltage control, voltage source current control and current source current control. Because when the input side using the current source control, need a large inductor in series, and this will make the dynamic response of the system becomes poor, so we usually use the source of the input terminal control, that is, a capacitor. In parallel operation of inverter and power grid, the output side control is divided into voltage control and current control. The network system is generally a large AC voltage source, when the output voltage control is used, the voltage source and the voltage source will occur in parallel operation. This situation is easy to occur the bad flow, and control will also relatively complex, so the output side of the c...