A current sharing interface circuit for redundant energy feedback output

Abstract

A current-sharing interface circuit with excess energy fed back to the output end is composed of a main power loop, a control loop and an auxiliary power source. The main power loop is composed of one integral channel circuit and (n-1) simplified channel circuits. The control loop is composed of n current control circuits and one current-sharing standard generator. The j current control circuits are matched with the main power loop and comprise a port vsenj, a port vgj, a port vsj, a port vgaj, a port vsaj and a port vcsrefj, wherein j is any number from 1 to n. The current-sharing standard generator comprises a port vsenj and a port vcsref. The auxiliary power source comprises a port Vij and a port Gnd. The excess energy in the current-sharing interface circuit is collected through an auxiliary circuit comprising auxiliary inductance and is fed back to the output end of the current-sharing interface circuit, the use ratio of the excess energy in the current-sharing interface circuit is improved, and the efficiency of a complex parallel-connection direct-current power system is improved.

Description

technical field [0001] The invention relates to a current equalizing interface circuit, which is applied to a parallel system composed of DC power supplies of the same or different specifications, in particular to a current equalizing interface circuit for the redundant energy feedback output end. Background technique [0002] Parallel DC power supply system has been widely used in communication, computer, electric power and other fields because of its high stability and reliability, convenient and flexible capacity expansion, and unlimited use occasions. The complex parallel DC power supply system consists of multiple DC power supplies of the same or different specifications. By introducing a current sharing interface circuit, the current sharing problem between DC power supplies of the same or different specifications can be solved at low cost, so that the reliability of the entire system can be improved. further enhanced. However, most of the existing current-sharing int...

AI Technical Summary

Problems solved by technology

However, most of the existing current-sharing interface circuits are energy-consuming, that is, the excess energy in the current-sharing interface circuit (that is, the difference between input energy and output energy) is completely consumed

Moreover, the greater the difference in output characteristics of the DC power supplies that make up the parallel system, the more excess energy will be in the current-sharing interface circuit, and the greater the energy wasted by the energy-consuming current-sharing interface circuit will be.

In the application of complex parallel DC power supply system, the efficiency performance of the energy consumption current sharing interface circuit is not ideal

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