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Voltage and current regulator

A current regulator and voltage technology, applied in transformer/inductor magnetic core, conversion equipment that can be converted to DC without intermediate conversion, irreversible AC power input conversion to DC power output, etc., can solve the problem of slow response, Can not continuously adjust the voltage and other problems, to achieve the effect of fast response, large adjustment range, continuous adjustment

Inactive Publication Date: 2013-01-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This voltage regulation method cannot continuously

Method used

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  • Voltage and current regulator
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  • Voltage and current regulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The topology and connection of a voltage and current regulator such as figure 1 shown. Figure 2a is the front view of the main iron core of the voltage and current regulator; Figure 2b is a side view of the main body iron core of the voltage and current regulator; Figure 2c It is a top view of the main core of the voltage and current regulator. The iron core 7 of the voltage and current regulator has four pillars, one center pillar, two side pillars, one side pillar, and four pillars are parallel; there are beams at both ends of the four pillars to form a T-shaped magnetic flux circuit, and the center pillar and The beams of the two side columns are on a straight line, the beams of the side columns and the central column are on another straight line, and the two lines are perpendicular to each other; the two side columns are symmetrically distributed on both sides of the central column, and are symmetrical on both sides of the central column , the cross-sectional ...

Embodiment 2

[0051] In this embodiment, the terminal with the same name of the AC coil L1 is the voltage and current regulator input terminal I1 of the AC power supply; the terminal with the same name of the AC coil L1 is connected with the terminal with the same name of the AC coil L3, and the terminal with the same name of the AC coil L3 is connected with the AC The same-named end of the coil L4 is connected, the different-named end of the AC coil L4 is the voltage and current regulator input terminal II2 of the AC power supply, the different-named end of the DC coil L6 is the DC coil terminal II6, and the different-named end of the DC coil L5 is the DC coil Terminal I5, such as Figure 4 shown. It becomes another connection mode of voltage and current regulator.

[0052] When the DC coil current of the voltage and current regulator is zero, the AC voltage U input by the voltage and current regulator N Add to AC coil L1, AC coil L3, AC coil L4. Excitation current i μ It flows through...

Embodiment 3

[0055] In this embodiment, the AC coil L2 is installed on the side column, such as Figure 5a , Figure 5b , Figure 5c shown. It becomes another topology and connection mode of voltage and current regulators.

[0056] When the DC coil current of the voltage and current regulator is zero, the AC voltage U input by the voltage and current regulator N Add to AC coil L1, AC coil L3, AC coil L4. Excitation current i μ It flows through the AC coil L1, the AC coil L3 and the DC coil L5. The magnetic flux generated by the AC coil L1 in the center column respectively flows back from the two side columns and does not flow into the side columns. The output voltage U=0 of the AC coil L2.

[0057] The DC current flowing into the DC coils L5 and L6 increases from zero, the output voltage of the AC coil L2 gradually increases, and the output current of the AC coil L2 also gradually increases.

[0058] If the direct current flowing into the DC coils L5 and L6 is large enough, the two...

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Abstract

The invention discloses a voltage and current regulator. The voltage and current regulator comprises an iron core of the voltage and current regulator; the iron core comprises four pillars, and T-shaped cross beams are arranged at the two ends of each pillar for constituting magnetic flux loops; the central pillar is provided with an alternating current coil L1, one lateral pillar is provided with an alternating current coil L3 and a direct current coil L5, the other lateral pillar is provided with an alternating current coil L4 and a direct current coil L6, and an alternating current coil L2is arranged on the central pillar or the side pillar; two terminals of the alternating current coil L2 are output terminals; the homonymous end of the coil L5 is connected with the homonymous end of the coil L6, and direct current input terminals are arranged at the synonymous end of the coil L5 and the synonymous end of the coil L6; and a control power supply is connected to the input end of a full-bridge rectification circuit via a thyristor which is in inverse parallel connection, and the output end of the full-bridge rectification circuit is connected with the direct current coils in series to form a closed loop. With the regulator, the regulation range of output voltage is greater, the reaction speed is fast, and the voltage is continuously adjustable.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation in power systems and the field of industrial electrical appliances, in particular to a voltage and current regulator. Background technique [0002] The transformation ratio of the power transformer is mostly fixed. Once the power transformer is manufactured, the number of turns of the primary coil and the number of turns of the secondary coil of the power transformer are determined, and the transformation ratio of the power transformer is determined. Power systems wish to have a means of adjusting voltage. The voltage can be adjusted by adjusting the reactive power, but the control equipment is complex, inconvenient to use, and the adjustment range is small. Electroplating enterprises, steel mills and industrial electrical fields require voltage and current regulation equipment with a large range and high power. [0003] It is most direct to adjust the power system ...

Claims

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Application Information

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IPC IPC(8): H02M7/12H02M5/10H01F27/24
Inventor 李晓明
Owner SHANDONG UNIV