1. power inverter: composed of inverter devices.
2.UPS power supply: main circuit, bypass, battery and other power supply input circuits, rectifier (REC) for AC /DC conversion, inverter (INV) for DC/ AC conversion, inverter and bypass output switching circuit, and energy storage battery.
Second, the use is different.
1. power inverter: the power inverter is not only suitable for vehicle-mounted systems, but can be used as long as there is a DC 12V power supply, which can convert DC 12V into AC220V alternating current, bringing convenience to your life. When the power inverter sends out high and low voltage alarm and turns off, the red LED is on and there is an alarm sound.
2.UPS power supply: used in mines, aerospace, industry, communications, national defense, hospitals, computer business terminals, network servers, network equipment, data storage equipment, emergency lighting systems, railways, ships, transportation, power plants, substations, nuclear power plants, fire safety alarm systems, wireless communication systems, program-controlled switches, mobile communications, solar energy storage energy conversion equipment, control equipment and emergency protection systems.
Third, the working principle is different.
1. power inverter: realize DC input, and then realize AC output. The working principle is the same as that of switching power supply, but the oscillation frequency is within a certain range. For example, if the frequency is 50HZ, the output is 50HZ. An inverter is a device that can change the frequency.
2.UPS power supply: the rectifier device adopts silicon controlled rectifier or high frequency switching rectifier, which has the function of controlling the output amplitude according to the change of external power supply, so that when the external power supply changes (the change should meet the system requirements), the rectified voltage with basically constant amplitude is output. The purification function is completed by the energy storage battery. Because the rectifier can't eliminate the interference of instantaneous pulse, there are still interference pulses in the rectified voltage.
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