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System for generating high-stability high voltage

A high-stability, high-voltage technology, used in control/regulation systems, high-efficiency power electronic conversion, and output power conversion devices, etc., can solve problems such as insufficient output high-voltage stability, reduce adverse effects, reduce volume, The effect of enhancing the output high voltage stability

Inactive Publication Date: 2010-04-21
BEIJING ARITIME INTELLIGENT CONTROL
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a system for generating high-voltage with high stability, improve the operating frequency of the high-voltage generator of the X-ray thickness gauge, and solve the problem of insufficient high-voltage output stability

Method used

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  • System for generating high-stability high voltage

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The present invention relates to a system for generating high stability high pressure, such as figure 2 Shown is the schematic diagram of an embodiment of the high-stability high-voltage system in the X-ray thickness gauge of the present invention. The circuit of the system is mainly composed of a switch conversion circuit 1, a large ratio transformer 2, a voltage multiplier 3, PWM control circuit 4, feedback sampling circuit 5 and resistor R 4 The switching conversion circuit 1 is connected in series to both ends of the input DC Vi busbar, including at least two power tubes for inverting the DC input voltage to generate high-frequency waves; the large ratio transformer 2 has a primary side and a secondary side, wherein the primary side is connected to the high-frequency wave output terminal of the switching conversion circuit 1, and the secondary si...

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Abstract

The invention discloses a system for generating high-stability high voltage, which belongs to the technical field of a high-voltage generator. A circuit structure of the system comprises a switch conversion circuit, a high-ratio transformer, a voltage multiplier, a feedback sampling circuit and a frequency-adjustable PWM control circuit, wherein the transformer is provided with a primary side and a secondary side; and the primary side is connected to a high-frequency wave output end of the switch conversion circuit, and is a series-parallel resonant circuit consisting of a resonant inductor Ls, a resonant capacitor Cs and an equivalent parallel resonant capacitor Cp of the high-ratio transformer. The system reduces the adverse impact of parasitic parameters of the transformer, improves the high-frequency operating frequency of the circuit, reduces the voltage drop of the pulsation and load of an output voltage, strengthens the stability of the output high voltage obviously, realizes a soft-switch operating mode by adjusting circuit operating points, further strengthens the stability of the output high voltage, improves operating frequency, reduces the volume of magnetic elements, and reduces the occupied space of the system obviously.

Description

technical field [0001] The invention belongs to the technical field of high-voltage generators, and relates to a system for generating high-pressure high pressure, in particular to a high-voltage generator suitable for equipment such as cold-rolled and hot-rolled X-ray thickness gauges. Background technique [0002] The high-speed non-contact X-ray thickness gauge is the key measurement component of the thickness control system (AGC) and flatness control system of the modern rolling mill, and the high-voltage generator is the core component of the X-ray thickness gauge. In the application of cold rolling system, the high voltage required by X-ray thickness gauge is about 50-100kV; in the application of hot rolling system, the high voltage required by X-ray thickness gauge is about 100kV-225kV. Since X-ray generators require high DC voltage, high-voltage generators generally use large-ratio transformers, with a ratio of about 60 to 200. Existing typical high-voltage transmit...

Claims

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Application Information

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IPC IPC(8): H02M3/335
CPCY02B70/1433Y02B70/1491Y02B70/10
Inventor 党红文邱忠义李小钢柯焕林
Owner BEIJING ARITIME INTELLIGENT CONTROL
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