DC constant current to DC constant current multi-module power supply control device and application method

Abstract

The invention discloses a multi-module power supply control device for direct current constant current to direct current constant current and an application method thereof, comprising: a power supply module group connected in series; an FPGA used to collect the power module parameters of each power supply module in the power module group; The power supply circuit used to convert the external power supply into the working power supply of the device; the voltage and current signal data acquisition circuit used to provide FPGA with the total voltage and total current of the power supply module group, and is equipped with an isolation circuit and A / D conversion A chip; an optical communication module group for optically isolating the power module group and the FPGA; wherein, each power module of the power module group is respectively provided with a control board for data communication with the FPGA. The present invention provides a multi-module power supply control device and its application method for direct current constant current conversion to direct current constant current. When multiple power supply modules meet the requirements of input and output, the input and output of the power supply modules are balanced and reasonable to share the stress, and the mode of intelligent sleep rotation It can further improve the working stability of the power supply.

Description

technical field [0001] The invention relates to a device for use in the context of equipment management. More specifically, the present invention relates to a multi-module power supply control device and an application method for converting DC constant current to DC constant current when input DC power is required in the industrial field. Background technique [0002] DC power supplies are widely used in the industrial field. In practical applications, due to the constraints of electronic devices and economical factors, the capacity of the power supply will not be very large. Therefore, in order to meet the requirements of power supply input and output parameters such as power (P), voltage (U), or current (I), multi-module power supplies are often used in combination. In some special fields, DC constant current (less than 2A) To convert to DC constant current, the input and output are connected in series to meet the power usage requirements, and at the same time, it is easy...

AI Technical Summary

Problems solved by technology

[0004] a. The power module may have the problem of unbalanced application. The unevenness of each module will lead to different stresses on each module. If the stress on the module is too large, the components will gradually deteriorate until they are eventually damaged, reducing the life of the power system. There are external reasons for uneven stress, and there are also deviations caused by the production of the same type of original device

[0005] b. The uneven stress distribution of the power module will also lead to unstable working conditions. This unstable working condition may also lead to the paralysis of the entire power supply system

[0006] c. In practical applications, considering the reliability of the power supply, the number of power supply modules is redundant, and the voting model (K / N) is generally used, such as figure 2 , which means that when K of the N power supply modules are normal, the entire power supply is normal. If there is a faulty module, the spare module will be put into operation to replace the faulty module to work, but after it is put into operation, it will generally work up to If one of the modules is not normal, the spare module will be started to work, and because the other working modules have been used for a long time, the deviation of their working parameters is greater than that of the new module just put in, so the stress between the power modules cannot be adjusted. adjustments are made so that the life of the entire power supply is affected

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