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Device applied to paralleled current sharing of programmable DC power module and paralleled current sharing method thereof

A technology of power supply module and DC power supply, which is applied in the direction of output power conversion device, conversion of DC power input to DC power output, electrical components, etc., which can solve the problems of high maintenance cost, poor portability, and many discrete components, and improve reliability. Strong versatility, and the effect of improving the transient response speed

Active Publication Date: 2016-03-16
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
  • Description
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Problems solved by technology

These are all analog control methods, but this control method has defects, such as many discrete components, high maintenance costs, and poor portability

Method used

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  • Device applied to paralleled current sharing of programmable DC power module and paralleled current sharing method thereof
  • Device applied to paralleled current sharing of programmable DC power module and paralleled current sharing method thereof

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Embodiment Construction

[0032] combined with Figures 1 to 2 The specific embodiment of the present invention is described further:

[0033] A device for parallel current sharing of program-controlled DC power supply modules, including multiple parallel-connected power supply modules with the same specifications and characteristics, sampling circuits and CPU processing circuits, and the power modules are installed in the program-controlled DC power supply host, such as figure 1 shown. The sampling circuit detects the output voltage and current parameters of each power module in real time, and transmits them to the CPU processing circuit. After differential sampling, comparison and amplification, the CPU processing circuit sends them to the analog-digital converter for processing, and accumulates the voltage and current parameters and transmits them to the CPU. The CPU processor of the processing circuit, the CPU processor outputs a driving signal, thereby controlling the output of each power module ...

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Abstract

The invention discloses a device applied to paralleled current sharing of a programmable DC power module and a paralleled current sharing method thereof. The paralleled current sharing method is based on the device applied to paralleled current sharing of the programmable DC power module. The device comprises a plurality of power modules which are connected in parallel and have the same specification and characteristic, a sampling circuit and a CPU (Central Processing Unit) processing circuit; the sampling circuit detects output voltages and current parameters of each power module in real time and transmits the output voltages and current parameters to the CPU processing circuit, after the output voltage and current parameters are processed by a CPU processor of the CPU processing circuit, a drive signal is output, so that the output of each power module circuit is controlled, and each power module outputs a balanced current finally. The device has the advantages of programmability, flexible control and strong universality, the hardware circuit can be simplified, the problems caused by component aging and temperature excursion of analog control are solved, the capacity of resisting disturbance is enhanced, and the reliability of the control system is improved.

Description

technical field [0001] The invention relates to a technology for parallel output of program-controlled DC power supply modules, in particular to a device and a current sharing method for parallel connection of program-controlled DC power supply modules. Background technique [0002] With the development of science and technology, the demand for high-power, high-power-density, and high-reliability power supply systems continues to increase. If a single power supply is used for power supply, due to the relatively large power to be processed, it will bring difficulties in the selection of power devices, the improvement of switching frequency and power density. In addition, once the power fails, it will lead to the collapse of the entire system. Therefore, using multiple power modules to operate in parallel to output high power is an important direction for the development of power supply technology. In a parallel system, each converter only handles a small power. Since each p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33523
Inventor 汪定华张永坡王文廷王俊郭宇飞
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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