A water-cooled high-power medium-high frequency power supply device

A high-frequency power supply and high-power technology, which is applied in the direction of 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 battery life. , The effect of continuous and stable output voltage

Active Publication Date: 2021-12-03
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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  • A water-cooled high-power medium-high frequency power supply device
  • A water-cooled high-power medium-high frequency power supply device
  • A water-cooled high-power medium-high frequency power supply device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as 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 switchi...

Embodiment 2

[0060] 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 switch Q4 that is controlled to conduct to the positive pole of the DC bus; specifically, the positive pole of the first absorbing capacitor C2 is connected to the upper bridge arm of the external inverter bridge arm. The center of the 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.

[0061] Similarly, the two ends of the lower bridge arm of the external inverter bridge arm are connected in parallel wit...

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Abstract

The invention discloses a water-cooled high-power medium-high frequency power supply device, comprising: the input end of a three-phase rectification circuit is connected to a three-phase power grid; the three-phase rectification circuit is connected to a first AC interface through a first switch K1; the input end of a three-phase inverter circuit The DC bus bar connected to the output end of the three-phase rectification circuit, the output end of the three-phase inverter circuit is connected to the second AC interface through the second switch K2; the first battery pack E1 and the second battery pack E2 connected in series between the DC bus bars, the second Both ends of the battery pack E2 are connected in parallel with a first chopper circuit; the first terminal of the DC interface is connected to the output end of the first chopper circuit, the second terminal of the DC interface is connected to the negative pole of the DC bus bar, and the third terminal of the DC interface passes through the first controllable The switch Q1 is connected to the positive pole of the DC bus; the compensation circuit for stabilizing the voltage at the input end of the three-phase rectification circuit is connected between the output end of the three-phase inverter circuit and the input end of the three-phase rectification circuit. The invention solves the technical problem that the output power of the medium and high frequency power supply device is unstable.

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 Patents(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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