DC UPS (DC uninterruptible power supply) is a special power protection equipment, which mainly uses DC power as its input, and converts direct current into alternating current through a special converter to ensure that stable power is provided to the equipment to be protected. The following is the description of the DC UPS categories:
First, basic concepts
DC UPS, the full name of DC uninterruptible power supply, is a kind of power protection equipment containing energy storage device, inverter as the main unit, voltage and frequency stability output. It is different from the traditional AC UPS (AC uninterruptible power supply), in the input power processing and conversion mode is different.
Second, the working principle
The working principle of the DC UPS mainly includes the following steps:
DC input: DC UPS uses direct current as input, which can be direct current from the grid or direct current converted by a rectifier.
Energy storage: Electrical energy is stored in the battery in the form of DC, which is the key to the DC UPS being able to output voltage when the external power fails.
Inverter output: When it is necessary to supply power to the load, the inverter inside the DC UPS converts the DC current in the battery into AC power and supplies the load through the output circuit.
Three, the main characteristics
High efficiency and energy saving: Because DC UPS directly takes DC as input, the conversion process from AC to DC in AC UPS is eliminated, so energy loss can be reduced and energy efficiency can be improved.
Strong adaptability: DC UPS can adapt to a wider range of power applications, especially in some occasions that require DC power supply, such as data centers, communication base stations, and so on.
High reliability: DC UPS adopts advanced circuit design and control technology, which can quickly switch to battery power supply mode when the power grid fails, ensuring
Uninterrupted Power Supply of the load.
