Power supply control system

Abstract

The invention discloses a power supply control system, which includes a controller, a switching power supply, a sampling circuit, a storage battery, a charging protection module, an inverter, a transformer and a conversion circuit, the controller is respectively connected with the sampling circuit, the switching power supply, a driving circuit, a switching control circuit and a communication interface, the communication interface is further connected with an upper computer, the switching control circuit is further connected with the conversion circuit, and the conversion circuit is further respectively connected with the isolation module, the transformer and a load. The system is uniformly controlled by the controller, the structure is greatly simplified, and the integration level and theworking reliability of the whole system are greatly improved; synchronous conversion between the mains supply and the UPS can be effectively realized through the control of the controller; the communication between the power supply and the computer is realized through the serial port of the application controller, so that the user can use the system more conveniently; intelligent control over thestorage battery is achieved through control of the controller, and compared with a continuous floating charge mode, the service life of the storage battery is effectively prolonged.

Description

technical field [0001] The invention relates to a power supply, in particular to a power supply control system. Background technique [0002] With the continuous development of society, electrical equipment has higher and higher requirements for power supply quality. In order to ensure the safety of electrical equipment, an uninterruptible power supply (UPS) is highly valued. Among them, the backup square wave output UPS voltage is widely used because of its small size, light weight, relatively cheap price, high operating efficiency and low noise. However, the traditional backup square wave UPS adopts analog circuit control, the structure is complex, it is difficult to upgrade, it is difficult to implement some advanced control algorithms, and there are some shortcomings in performance. For example, the in-phase switching function is not implemented in most analog controls, so there is a danger of short-circuiting the AC during the switching process, which is inconvenient ...

AI Technical Summary

Problems solved by technology

However, the traditional backup square wave UPS adopts analog circuit control, the structure is complex, it is difficult to upgrade and replace, it is difficult to realize some advanced control algorithms, and there are some shortcomings in performance.

For example, the in-phase switching function is not implemented in most analog controls, so that there will be a risk of short circuit in the AC during the switching process, it is inconvenient to communicate with the computer, and it is impossible to realize real-time monitoring and other defects.

Images