Wide-region energy feedback method for multi-output switch power source and its implementing circuit

Abstract

The invention discloses a wide-range energy feedback method of a multiplexed output switching power source and a realizing circuit. The realizing circuit comprises multiplexed power output ends, a current equalizing transformer circuit and feedback electronic loads, wherein, the multiplexed power output ends are respectively connected in parallel to corresponding direct-current busbars through the current equalizing transformer circuit, and fed back to an electric network through a corresponding feedback electronic load. The method adopts boost pressure current equalizing transformer circuit; independent current equalizing control is performed through digital control technologies; multiplexed different output voltages of the switching power source are transformed into one path voltage or a small number of paths of voltages; the voltages are connected in parallel to corresponding direct-current busbars and fed back to the electric network through a general DC / AC feedback type electronic load. The invention has the advantages of simple realizing method, low cost and high feedback efficiency, and the realizing circuit is accurately set with simple structure at the same time.

Description

technical field [0001] The invention relates to the field of switching power supply aging energy feedback, in particular to a wide-range energy feedback method and a realization circuit of a multi-channel output switching power supply. Background technique [0002] With the shortage of energy and the deterioration of the environment, our demand for green energy and green manufacturing is becoming stronger and stronger. The energy return during the aging process is an important part of green manufacturing. [0003] As we all know, if the aging of switching power supply is purely resistive, it will be a huge waste of energy, and it is also an important factor for the high manufacturing cost. Especially for the manufacture of high-volume, high-power power supplies, this waste is particularly obvious. Most of the current aging still adopts pure resistive aging, and there are already some solutions to the energy feedback problem of aging, but there are various problems and limi...

AI Technical Summary

Problems solved by technology

However, it is very complicated to implement. Since each module needs corresponding DC / DC correspondence, a large number of complicated connecting wires are required from the aging cabinet to the inverter module, which is not only inconvenient to implement, but also expensive

Moreover, this feedback method only corresponds to a single output. For multiple outputs, such as a plasma TV power supply with more than a dozen outputs, the connection will become extremely complicated and impossible to realize, and the cost will also increase dramatically.

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