PurposeTo solve the trip problem that usually occurs for general power supply unit, and to improvedehydration effect.

In some new AC locomotives,They have canceled the auxiliary winding in the traction transformer,the auxiliary system obtains the power from the DC link,the traction motor works in the state of regenerative brake when passing neutral section,it feeds back the energy to charge the DC link,so we can achieve the aim of uninterrupted power supply technology for auxiliary system.

This paper confirms the influence degree about the uninterrupted power supply of compressed-air generator set through analyzing energy utilization in different decompression method for the high pressure air and puts forward a conclusion that it can get more power supply using two-stroke engine than four-stroke engine; meanwhile the cost of 32.

The converter which is constituted of a full bridge rectifier and a Boost-Flyback converter with power factor correction, uninterruptible power supply and fast output voltage regulation, can transfer one AC voltage into desired output DC voltage.

Using uninterrupted power management systems for ocean cabled observatory network node can achieve the uninterruptible power supply function, which has maintained the data from sensors continuity and the uninterrupted communications, and plays an important role in uninterrupted operation for the ocean cabled observation network.

According to the users′ actually demand for uninterruptible power supply for loads,the internal structure of digital generator is analysed and the reason for its uninterruptible function can′t be achieved.