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Water-cooling high-power medium-high frequency power supply device

A high-frequency power supply and high-power technology, which is applied to output power conversion devices, circuit devices, battery circuit devices, etc., can solve the problems of unstable output power of medium and high frequency power supply devices, and improve error resistance and endurance. , to ensure the effect of stable operation

Active Publication Date: 2021-10-15
JIANGSU EASTONE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the technical problem that the output power of the medium and high frequency power supply device is unstable

Method used

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  • Water-cooling high-power medium-high frequency power supply device
  • Water-cooling high-power medium-high frequency power supply device
  • Water-cooling high-power medium-high frequency power supply device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like Figure 1-2 , when a single-phase phase loss occurs in the three-phase grid, the second contact point on the second side of the terminal Lo is connected to the center of the first bridge arm of the three-phase inverter circuit, and the third bridge arm of the three-phase inverter circuit The center is connected to the neutral line, and the single-phase inverter circuit composed of the first bridge arm and the third bridge arm of the three-phase inverter circuit provides support for the phase line where the grid phase is missing. Specifically, the second contact point on the second side of the terminal Lo is connected to the phase line where the missing phase of the three-phase power grid is located through a selection switch in the terminal Lo, and is adjusted by controlling the first chopper circuit Z and the second chopper circuit The voltage amplitude of the second contact on the second side of the connection terminal Lo is adjusted by controlling the switching ...

Embodiment 2

[0055] Embodiment 2 is another compensation loop mode, specifically as image 3 As shown, the DC bus also includes an external inverter bridge arm, the center of the external inverter bridge arm and the center of the third bridge arm of the three-phase inverter circuit are connected to the neutral line through the fourth switch K4, the The two ends of the upper bridge arm of the external inverter bridge arm are respectively connected in parallel with a first absorbing capacitor C2 and a fourth switch Q4 that is controlled and conducted to the positive pole of the DC bus; specifically, the positive pole of the first absorbing capacitor C2 is connected to the positive pole of the external inverter bridge arm. The center of the upper bridge arm is connected, and the negative pole of the first absorbing capacitor C2 is connected to the positive pole of the DC bus through a diode.

[0056] Similarly, the two ends of the lower bridge arm of the external inverter bridge arm are conne...

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Abstract

The invention discloses a water-cooling high-power medium-high frequency power supply device. According to the device, the input end of a three-phase rectifying circuit is connected with a three-phase power grid; the three-phase rectifying circuit is connected to a first AC interface through a first switch K1. the input end of a three-phase inverter circuit is connected with a direct-current bus of the output end of the three-phase rectifying circuit, and the output end of the three-phase inverter circuit is connected to a second alternating-current interface through a second switch K2; a first storage battery pack E1 and a second storage battery pack E2 are connected in series between the direct current buses, and two ends of the second storage battery pack E2 are connected in parallel with a first chopper circuit; a first terminal of the direct-current interface is connected with the output end of a first chopper circuit, a second terminal of the direct-current interface is connected with the negative electrode of the direct-current bus, and a third terminal of the direct-current interface is connected with the positive electrode of the direct-current bus through a first controllable switch Q1; and a compensation loop is used for stabilizing the voltage of the input end of the three-phase rectifying circuit and is connected between the output end of the three-phase inverter circuit and the input end of the three-phase rectifying circuit. The technical problem that the output power supply of the medium-high frequency power supply device is unstable is solved.

Description

technical field [0001] The invention relates to the technical field of power distribution and energy storage, in particular to a water-cooled high-power medium-high frequency power supply device. Background technique [0002] Medium and high frequency power supply devices are mainly used in energy-consuming equipment that requires high voltage stability. For example, as a power supply for single crystal furnaces, single crystal furnaces have very high requirements for controlling the temperature field during operation. Once there is a deviation in the temperature field , it is easy to cause defects inside the single crystal silicon and be scrapped. [0003] In the prior art, during the long growth process of monocrystalline silicon, if there is a phase failure in the three-phase power grid, basically the furnace product will be scrapped, causing great losses. Therefore, the present invention proposes a high-power The medium and high frequency power supply device stabilizes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/458H02M1/32H02J9/06H02J7/34H05K7/20
CPCH02M5/458H02M5/4585H02M1/32H02J9/062H02J7/34H05K7/20927
Inventor 虞大力
Owner JIANGSU EASTONE TECH
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