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Low-voltage current-limiting constant-voltage device

A constant-voltage device, low-voltage current-limiting technology, applied in the direction of conversion equipment that can be converted to DC without intermediate conversion, can solve the problem of few transformers in the field of power saving, achieve protection and safety, reduce instantaneous voltage drop, and absorb waves. surge effect

Inactive Publication Date: 2016-12-21
河北五良盟合环保技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Low-voltage power consumption is very common in daily life. How to effectively save power is a very worthwhile consideration. At present, power saving is generally used for a single device, and it is rarely applied to the overall power saving field of transformers.

Method used

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Embodiment Construction

[0015] Such as figure 1 As shown, the low-voltage output end of the distribution transformer is connected in series with a current-limiting reactor and then connected to the input end of the three-dimensional wound iron core autotransformer. In order to balance the voltage at the output end, the current-limiting reactor is a three-dimensional wound iron core reactor. The output end of the phase alternating current realizes voltage balance and stable output through the excitation balance method. The output end of the three-dimensional wound core autotransformer is the excitation winding of a multi-tap voltage regulator. There are five gears, corresponding to 110%, 100%, and 96% respectively. , 92%, 90% voltage output, when the appliance is initially started, the control chip controls the first switch to turn on the other switches to turn off, 110% voltage ensures the fast start of the appliance, after startup the control chip controls the second switch to turn on the other switc...

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Abstract

The invention relates to the field of low-voltage power supply, in particular to a low-voltage current-limiting constant-voltage device. A current limiting reactor and a three-dimensional roll core autotransformer are connected in series with a low-voltage output end of a power distribution transformer, a multi-tap voltage regulator excitation winding is arranged an output end of the three-dimensional roll core autotransformer and has a plurality of shifts, each shift output is connected with a switch, and each switch is connected with a control chip. By means of current-limiting reactive characteristic, a surge can be absorbed, so that a large-current impact can be lagged, an instantaneous voltage drop of a system is reduced, the system stability is improved, an effect of filtering is achieved, a power factor of the system is improved, and meanwhile, the safety of the three-dimensional roll core autotransformer is protected.

Description

technical field [0001] The invention relates to the field of low-voltage power supply, in particular to a low-voltage current limiting and constant voltage device. Background technique [0002] Low-voltage electricity consumption is very common in daily life. How to effectively save electricity is very worth considering. At present, electricity saving is generally used for a single device, and it is rarely used in the field of transformer overall energy saving. It is the characteristic of this patent that it can be applied not only to a single device but also to the overall energy saving of transformers. The combined application of low-voltage current-limiting reactor and autotransformer is also the first in the low-voltage field. Contents of the invention [0003] The technical problem to be solved by the invention is: how to effectively save the power consumption of the power distribution system. [0004] The technical solution adopted in the present invention is: a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/12
CPCH02M5/12
Inventor 乔宇
Owner 河北五良盟合环保技术有限公司
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