Umgomo wokusebenza we-UPS eku-inthanethi

When the online UPS is powered by the power grid normally, the voltage input from the grid is filtered by a noise filter to remove high-frequency interference in the grid, and pure AC power can be obtained. It enters the rectifier for rectification and filtering, and converts the AC power into smooth DC power, which is then divided into two paths. One path enters the charger to charge the battery, and the other path supplies the inverter. Nokho, the inverter converts the DC power into 220V, 50Hz AC power for the load to use. When the mains power is interrupted, the input of AC power has been cut off and the rectifier is no longer working. Ngalesi sikhathi, the battery discharges and delivers energy to the inverter, which then converts DC power into AC power for use by the load. Ngakho, for the load, although the mains power no longer exists, the load has not stopped due to the interruption of mains power and can still operate normally.

The working principle of backup UPS is that when the power supply of the grid is normal, one line of mains power charges the battery through a rectifier, while the other line of mains power is initially stabilized by an automatic voltage regulator, absorbs some of the grid interference, and then directly supplies power to the load through a bypass switch. At this point, the battery is in a charging state until it is fully charged and enters a float charging state. UPS is equivalent to a regulator with poor voltage regulation performance, which only improves the amplitude fluctuation of the mains voltage and does not make any adjustments to the "electrical pollution" such as frequency instability and waveform distortion that occur on the power grid. When the voltage or frequency of the power grid exceeds the input range of the UPS, that is, under abnormal circumstances, the input of AC power has been cut off, the charger stops working, the battery discharges, and the inverter starts working under the control of the control circuit, causing the inverter to generate 220V, 50Hz AC power. Ngalesi sikhathi, the UPS power supply system switches to the inverter to continue supplying power to the load. The inverter of the backup UPS is always in a backup power supply state.

The working principle of online interleaved UPS is that when the mains power is normal, it directly supplies power to the load from the mains power. When the mains power is low or high, it is stabilized by the UPS internal stabilizing circuit and output. When the mains power is abnormal or power is cut off, it is converted to battery inverter power supply through a conversion switch. Its characteristics are: wide input voltage range, umsindo ophansi, usayizi omncane, njll., but there is also switching time. Nokho, compared with general backup UPS, this model has stronger protection function, and the inverter output voltage waveform is better, generally sine wave.