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Staggered parallel high-stability modularized direct-current current-stabilized power supply system and staggered parallel connection method thereof

A high-stability, steady-current power supply technology, applied in the field of power conversion in the power industry, can solve problems such as unfavorable filtering, reduced output filter capacity, and no detection delay device, etc., to achieve favorable selection, increased reliability, and reduced Effects of electrical and thermal stress

Active Publication Date: 2013-03-20
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For each power module unit participating in parallel operation, synchronous operation or interleaved operation control method can be adopted. Since the total output current ripple of the synchronous operation system is the synchronous superposition of the output current ripple of each module, it is not conducive to filtering. Therefore, more parallel systems The interleaved operation mode is adopted, the power switching devices of each unit in the circuit work in a sequential manner, the frequency of the driving signal is consistent, the phase angles are staggered and turned on alternately, and it has the advantages of suppressing output current ripple, reducing output filter capacity and expanding system power output , but in the traditional synchronization technology, each module works in a state of receiving the synchronization signal in an open loop, and there is no detection system whether each module receives the synchronization signal or a delay device during the transmission of the synchronization signal, so it cannot ensure that each module of the system Accuracy of delay phase angle and signal integrity of received interleaved interconnect signals

Method used

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  • Staggered parallel high-stability modularized direct-current current-stabilized power supply system and staggered parallel connection method thereof
  • Staggered parallel high-stability modularized direct-current current-stabilized power supply system and staggered parallel connection method thereof
  • Staggered parallel high-stability modularized direct-current current-stabilized power supply system and staggered parallel connection method thereof

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Embodiment Construction

[0021] Markings in the attached drawings:

[0022] attached figure 1 Among them, 101—input busbar, 102—output busbar, 103—signal cable;

[0023] attached figure 2 Among them, 201—input busbar, 202—output busbar, 203—signal cable, 204—synchronous line.

[0024] Embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0025] as attached figure 2 It is a structural diagram of an interleaved parallel high-stability modular DC steady-current power supply system according to an embodiment of the present invention, including an input bus 201, N parallel current source modules, a signal cable 203, a synchronization line 204, and an output bus 202. The working process is as follows:

[0026] (1) First, select a current source module randomly as the main control module of the system (current source module 1 is selected as the main control module in the figure), and one end of the input bus 201 is connected to the input exter...

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Abstract

The invention discloses a staggered parallel high-stability modularized direct-current current-stabilized power supply system, which belongs to the technical field of variable flow in the power industry. The conventional redundancy technology for a voltage type power supply system is applied to a current type power supply system. The conventional staggered parallel connection technology is improved and applied to a current type power supply system. Self-verification synchronization technology is adopted, so that correct transceiving of each module of the system can be ensured, the influence of transmission time delay of the system on a synchronizing signal is minimized, each module of the system can receive the synchronizing signal and staggered parallel connection of the system is realized truly. When a plurality of power supply modules run in parallel, output total current can reach thousands accuracy effect, the size of a filtering device is reduced and transient response characteristic of the system is enhanced.

Description

technical field [0001] The invention relates to a staggered parallel high-stability modular DC steady-current power supply system, which belongs to the field of current conversion technology in the electric power industry. Background technique [0002] Switching power supply is being used more and more in various fields of national production due to its many remarkable advantages. Program-controlled switches, communications, control equipment power supplies, etc. have widely used switching power supply, which has further promoted the rapid development of switching power supply technology. develop. As a kind of switching power supply, the steady-current power supply is also a standing power supply for electrical equipment. The steady-current power supply of electronic testing equipment has high requirements for reliability, stability, and power supply efficiency. At the same time, the output current ripple is also required to be as small as possible. Because The circuit inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/14
Inventor 张杰胡媛媛罗传仙刘飞陈轩恕
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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