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Novel Sepic AC-AC chopping voltage regulation circuit and application thereof

An AC chopper and circuit technology, which is applied in the field of AC up-down chopper and voltage regulation circuit, can solve the problems of high cost and poor reliability.

Pending Publication Date: 2019-03-26
龚秋声
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These six topological circuits replace the unidirectional switch and diode in the DC circuit with two fully-controlled bidirectional switches. The control mode of the two double fully-controlled switches is complementary control to realize AC chopping and voltage regulation. They have Defects such as poor reliability and high cost

Method used

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  • Novel Sepic AC-AC chopping voltage regulation circuit and application thereof
  • Novel Sepic AC-AC chopping voltage regulation circuit and application thereof
  • Novel Sepic AC-AC chopping voltage regulation circuit and application thereof

Examples

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Embodiment Construction

[0007] attached figure 1 It shows the existing Sepic AC up-down chopper voltage regulator circuit, which is composed of 2 capacitors C1 and C2, 2 inductors L1 and L2, 2 bidirectional switches S1 and S2 and their control circuits. Its characteristics are: 1) bidirectional switch S1 It consists of 2 diodes D1, D2 and 2 transistors V1, V2. 2) The bidirectional switch S2 is composed of 2 diodes D3, D4 and 2 triodes V3, V4. 3) Complementary control of S1 and S2, it is necessary to control two bidirectional switches at the same time to realize AC, AC, lift, chopping and voltage regulation.

[0008] attached figure 2 It is an innovative circuit of a Sepic AC lifting chopper voltage regulating circuit of the present invention, which is also composed of 2 capacitors C1 and C2, 2 inductors L1 and L2, 2 bidirectional switches S1 and S2 and their control circuits. In: on the one hand, with figure 2 The two-way switch S2 in the circuit is replaced by two thyristors V3 and V4 figure ...

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Abstract

The invention relates to a novel Sepic AC-AC chopping voltage regulation circuit comprising an AC power supply, a load, two inductors, two capacitors, two bidirectional switches S1 and S2 and a control circuit. Two AC input terminals (2 and 1) and two AC output terminals (3 and 1) are arranged. The S1 includes a triode and a diode and the S2 is formed by two thyristors. Trigger electrodes of the two thyristors within positive and negative half cycles of the power supply have direct-current voltages; and the output lifting AC voltages can be adjusted by adjusting the break-make ratio of the bidirectional switch S1. Compared with the existing Sepic AC-AC chopping voltage regulation circuit, the novel Sepic AC-AC chopping voltage regulation circuit has advantages of high reliability and low cost. The novel Sepic AC-AC chopping voltage regulation circuit is named as a Gong's-Sepic AC-AC boosting chopping voltage regulation circuit for distinguishing. The novel circuit is expected to becomea circuit represented on the textbook of the power electronics technology to witness the contribution of the Chinese people's inventions to the world's AC-AC chopping control science. The novel SepicAC-AC chopping voltage regulation circuit is used for designing products like a compensation type AC voltage-stabilizing power supply.

Description

[1] Technical field [0001] The invention relates to a power electronic conversion chopper basic circuit, especially an AC lifting chopper voltage regulating circuit and its application. [2] Background technology [0002] There are mainly six DC chopper voltage regulating circuits in Chapter 3 of the textbook on electric power sub-branches. They are all named by foreigners or foreign inventors. The Buck-Boost innovation proposed by Slobodan Cuk of the California Institute of Technology The single-tube non-isolated DC chopper voltage regulator circuit has inductance in the input and output sections, which can significantly reduce the pulsation of the input and output currents. It is an innovative circuit for the Buck / Boost circuit. It is named Cuk circuit and is listed in the world. Power electronics textbooks record the contributions of Caltech and Americans to the world's power electronics science. Corresponding to the six DC chopper circuits, there are also six AC chopper ...

Claims

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Application Information

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IPC IPC(8): H02M5/293
CPCH02M5/293H02M5/2932
Inventor 龚秋声
Owner 龚秋声
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