Inverter development determines the development of UPS

The core device of UPS is the inverter. The history of UPS development is actually the history of the development of different inverter devices.

The UPS used in the early days was a thyristor. The UPS was inefficient, noisy, and bulky. The second-generation UPS uses a bipolar transistor, and its switching speed can be more than audio. This reduces the noise and reduces the size, but because the bipolar transistor is likely to cause secondary breakdown, the third-generation UPS using MOSFETs is generated. However, its weakness is that it is not easy to make large UPS capacity. In 1982, Mitsubishi Corporation of Japan succeeded in developing a novel power device with field characteristics, high-frequency characteristics of the field effect, controllable gate voltage, small drive current, and large current handling capability of bipolar transistors. Bipolar Transistor (IGBT).

Shante Company was the first company to apply IGBT technology to the UPS field. For this reason, UPS has undergone a huge transformation, changing the big and cumbersome image of the past, and at the same time making UPS intelligent control possible. However, to further reduce the UPS volume, improve the inverter efficiency, and improve various output characteristics of the UPS, the design of high-frequency UPS refers to people's agenda, and the inverter's switching frequency is tens of thousands of Hertz. To achieve high frequency, this will be the main development trend of UPS.

Intelligence is one of the main goals of UPS. Only intelligentization can effectively monitor all operating components of the UPS itself, up to the main components, and have redundant measures for the existing faults to improve the reliability of the UPS. With the popularization of computer application technology and the rapid development of the current global information network construction, UPS is required to provide a safe, uninterrupted Power Supply, which places higher requirements on UPS.

In a local area network (LAN), users often require servers to perform a large amount of digital computing and access data stored in server peripherals, so that the operation of the server will seriously affect the operation of all other active nodes in the network, so server failure will endanger the entire network. . Therefore, network management should pay special attention to ensure the reliability of the server operation. The early method of running UPS on the network was to run a software agent on the server. The reliability of this method is not high. The most prominent advancement in UPS software today is support for Simple Network Management Protocol (SNMP). An SNMP adapter is connected to the UPS serial port. The UPS software provides interfacing with common network management systems (HP Openview, IBM Netview, and Novell NMS). The use of SNMP to manage UPS requires the establishment of a UPS Management Information Base (MIB) standard. UPSMIB can collect a large amount of information about the UPS from the network. The UPSMIB as defined by the INTERNET Engineering Special Group will become a standard and may change.

At the same time, UPS's software products can provide various methods, such as pagers, FAX, and E-MAIL, to report various messages to network administrators and handle problems that may occur at any time. In order to reduce energy waste, the system can be scheduled to close at the weekend and restart on Monday. In addition, the UPS software can provide periodic tests to ensure the reliability of the UPS and the battery.

At present, some of the world's major UPS manufacturers also set up software R&D centers like computer companies, and are equipped with excellent software engineers. The development of computer technology, the continuous improvement of computer operating systems and communication protocols, and the need to improve and improve the UPS's intelligent technology to adapt to it. The pursuit of perfect UPS intelligent technology will be the development trend of UPS.

In summary, high frequency and intelligence will be the main direction of UPS development. It can be expected that in the near future, the volume of the UPS will be even smaller, with better performance and more humanity.