Power-source power supply control box for suppressing power-on inrush current and high-voltage power source
A technology of power supply and high-voltage power supply, applied in electrical components, output power conversion devices, etc., can solve the problems of air switch tripping, power-on impulse current too large power supply modules, etc., and achieve the effect of small size and low cost
Inactive Publication Date: 2017-01-04
SOUTHWESTERN INST OF PHYSICS
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Problems solved by technology
[0003] The technical problem solved by the present invention is the frequent tripping of the air switch of the power module caused by excessive power-on surge current, and further provides a power supply control box capable of suppressing power-on surge current, and the present invention also provides a power supply control box comprising the power supply control box high voltage power supply
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[0021] The technical solutions and beneficial effects of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0022] See attached figure 1 , a power supply control box for suppressing power-on surge current of the present invention includes an input end, an output end, and a first branch and a second branch respectively connected in parallel with the output end, and a time relay 7 is arranged on the first branch, A contactor 8 is arranged on the second branch, the node of the time relay 7 is arranged on the second branch and is connected in series with the contactor 8, a resistor 6 is arranged on the circuit between the second branch and the output end, and the contactor 8 The master node is connected in parallel with resistor 6.
[0023] In order to be able to visually observe the current working state of the power supply control box, set the third branch in parallel with the output end, and set the a...
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The invention discloses a power-source power supply control box for suppressing the power-on inrush current. The power-source power supply control box comprises an input terminal, an output terminal, and a first branch and a second branch which are separately connected in parallel with the output terminal. The first branch is provided with a time relay thereon, and the second branch is provided with a contactor thereon. A node of the time relay is arranged on the second branch and is serially connected with the contactor. A resistor is provided on a circuit between the second branch and the output terminal. A main node of the contactor is connected in parallel with the resistor. The invention also discloses a high-voltage power source comprising the power-source power supply control box for suppressing the power-on inrush current. The power-source power supply control box of the invention is serially connected between a large-capacity isolation transformer and a power supply cabinet, so the power-on instantaneous inrush current is suppressed and the power supply current after the circuit enters the steady state is not affected. The power-source power supply control box with such a structure has the characteristics of small size and low cost and is applicable to high-voltage power sources of large nuclear fusion devices and other occasions where the power-on inrush current is too large.
Description
technical field [0001] The present invention relates to the field of high-voltage power supplies, in particular to a power supply control box that provides power frequency power supply for the main loop power supply module of the high-voltage power supply and can suppress the power-on surge current of the main loop power supply module. The present invention also relates to a power supply control box including the power supply control box high voltage power supply. Background technique [0002] At present, large-scale nuclear fusion devices at home and abroad use various auxiliary heating methods to carry out plasma heating and current drive experiments, and the required high-voltage power supply voltage is gradually increasing. At present, this high-voltage power supply is mostly composed of multiple switching power supply modules. Since each power supply module works independently and the potentials of each power supply module are inconsistent, each module needs to be power...
Claims
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IPC IPC(8): H02M1/32
Inventor 毛晓惠李青王雅丽
Owner SOUTHWESTERN INST OF PHYSICS