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Cascade voltage stabilization sine resonance high-voltage power supply

A high-voltage power supply and resonant circuit technology, which is applied in the direction of high-efficiency power electronic conversion, electrical components, and adjustment of electrical variables, can solve problems such as difficulty in greatly increasing frequency, reliability of bridge arm interference, and difficulty in realizing soft switching, so as to improve efficiency, Avoid the effects of common bridge arms and high reliability

Pending Publication Date: 2021-10-22
中国船舶重工集团公司第七二三研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in high-voltage power supplies, due to the large distribution parameters of high-voltage transformers such as distributed capacitance and leakage inductance and the large parasitic parameters of high-voltage power devices, the engineering of phase-shifted full-bridge topology in high-voltage power supplies often has reliability problems caused by bridge arm interference. , light load is difficult to achieve soft switching and the frequency is difficult to greatly increase and other issues

Method used

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  • Cascade voltage stabilization sine resonance high-voltage power supply
  • Cascade voltage stabilization sine resonance high-voltage power supply
  • Cascade voltage stabilization sine resonance high-voltage power supply

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Embodiment

[0040] Such as figure 1 As shown, the present invention is a cascaded voltage stabilized sinusoidal resonant high-voltage power supply, comprising:

[0041] Non-isolated pre-stabilized voltage circuit 1, high-frequency sinusoidal resonant circuit 2, high-frequency transformer 3, high-voltage rectification and filter circuit 4, voltage-stabilized sampling feedback part 5 and specific connection modes between them; the non-isolated pre-regulated voltage circuit 1 Adjust the output voltage according to the voltage signal fed back by the voltage stabilization sampling feedback part 5, and send it to the subsequent high-frequency sinusoidal resonant circuit 2, after the high-frequency inverter of the high-frequency sinusoidal resonant circuit 2, a sine wave is generated and sent to the high-frequency transformer 3. The high-frequency transformer 3 boosts the sine wave voltage and sends it to the high-voltage rectification filter circuit 4 for high-voltage rectification to complete ...

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Abstract

The invention discloses a cascade voltage stabilization sine resonance high-voltage power supply. The high-voltage power supply comprises a non-isolated pre-voltage-stabilizing circuit, a high-frequency sine resonance circuit, a high-frequency transformer, a high-voltage rectifying and filtering circuit and a voltage-stabilizing sampling feedback part; the non-isolated pre-voltage-stabilizing circuit regulates the output voltage according to a voltage signal fed back by the voltage-stabilizing sampling feedback part and sends the voltage to the post-stage high-frequency sine resonance inversion and boost conversion rectification circuit, and the high-frequency sine resonance circuit is in an open-loop state; and the pre-stage non-isolated pre-voltage-stabilizing circuit is adjusted through sampling of the output voltage, so that voltage-stabilizing closed-loop feedback of the output voltage of the whole high-voltage power supply is realized. The pre-stage voltage pre-stabilizing circuit adopts the four-switch buck-boost converter and can adapt to a wide input power supply range, the post-stage cascaded sine resonant converter realizes soft switching of a switching transistor of a main power conversion part, the switching frequency and the conversion efficiency of the high-voltage power supply are improved, and the power supply has the characteristics of wide input voltage range, miniaturization, high frequency, high efficiency, high reliability and the like.

Description

technical field [0001] The invention belongs to the technical field of high-voltage power supplies, in particular to a high-voltage power supply with cascaded voltage stabilization and sinusoidal resonance. Background technique [0002] With the rapid development of semiconductor power devices, the demand for industrial products is gradually increasing, and the miniaturization trend of high-voltage power supplies is intensifying. In response to the design requirements for miniaturization, the high-frequency and soft-switching technologies of high-voltage power supplies are constantly developing and innovating. Among them, the phase-shifted full-bridge topology is the classic circuit structure of high-frequency soft-switching high-voltage power supplies. [0003] However, in high-voltage power supplies, due to the large distribution parameters of high-voltage transformers such as distributed capacitance and leakage inductance and the large parasitic parameters of high-voltage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M7/48H02M7/501
CPCH02M3/1582H02M7/48H02M7/501Y02B70/10
Inventor 高彧博鲁帆程立李群谢章贵
Owner 中国船舶重工集团公司第七二三研究所
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