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A pulse power supply module based on rsd

A technology of pulse power supply and charging power supply, which is applied in the direction of electric pulse generator circuit and energy storage element to generate pulses, etc., which can solve the problems of large stray parameters of the circuit, short service life, slow switching speed, etc., and achieve high output current density, Effects of reducing parasitic inductance and reducing wire length

Active Publication Date: 2017-09-12
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the impetus of national defense, economic and other fields, the increase of the on-state current rise rate di / dt of the switch will approach the working limit of the switch, and the performance of the switch greatly limits the progress in this field
[0003] In recent years, semiconductor switches such as reverse switching transistors (RSD), pulse thyristors, and insulated gate bipolar transistors (IGBTs) have gradually entered the field of pulse power; spark gap switches have high withstand voltage and large flow, but short service life; Bipolar transistors can withstand high-speed switching, high withstand voltage, and strong current. They are important semiconductor devices in the field of power electronics, but they are relatively expensive; thyristors can withstand high voltage and high current, but the switching speed is slow
[0004] RSD is a new generation of high-power pulse device, with good working stability and trigger dispersion, high voltage and high current resistance, and long service life; but in the existing technology, discrete devices are connected through wires or copper bars to form a pulse system, forming RSD Switches, circuit stray parameters are large, and the on-state current rise rate di / dt of RSD is far lower than the limit of its on-state current rise rate di / dt tolerance (100kA / μs)

Method used

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  • A pulse power supply module based on rsd
  • A pulse power supply module based on rsd
  • A pulse power supply module based on rsd

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In Embodiment 1, in order to avoid the interference of the high current of the main circuit on the control module, the control module is formed into a separate board, which is composed of a general-purpose IGBT drive circuit and a TMS320X28 series DSP. The DSP outputs two complementary PWM waves, which are sent to the pre-charging source 6 respectively. And the driving circuit of IGBT 7, when the pre-charging source 6 receives a high-level signal, IGBT7 receives a complementary low-level signal; when charging, the IGBT is disconnected, and the IGBT is turned on after charging, and the pulse power supply starts to work. Sequentially control the on-off of the charging power supply 6 and IGBT7 to realize the repetition frequency work of the pulse power supply;

[0035] In Example 1, the soldering of RSD 5 and the surrounding copper foil 4 and PCB 1 adopts a reflow soldering process, and the solder is made of lead-containing solder, which is soft and helps to reduce thermal ...

Embodiment 2

[0049] The difference between embodiment 2, embodiment 3 and embodiment 1 is that the tube core parameters of the RSD that the pulse power supply adopts are different, and the tube core of the RSD that embodiment 1 adopts is 1 inch, and the tube core of the RSD that embodiment 2 adopts is 2 inches. Inch, the tube core of the RSD that embodiment 3 adopts is 3 inches, and the size of RSD tube core is bigger, and corresponding RSD encapsulation profile is bigger, and the relevant parameters such as the withstand voltage of RSD are higher, and the output current of pulse power supply and repetition frequency are higher. High; as the size of the RSD changes, the parameters of the surrounding copper foil covering the RSD change accordingly.

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Abstract

The invention discloses a pulse power supply module based on RSD, which includes a main capacitor, a magnetic switch, RSD, a charging power supply, a switch tube, a pre-charging capacitor, a pre-charging inductor and a control module; , charging power supply, switching tube, pre-charging capacitor and pre-charging inductance are integrated on a PCB, and RSD is fixed on the PCB by surrounding copper foil; the present invention integrates RSD power switch with charging power supply, capacitor and magnetic switch On the PCB, the components work in harmony, the length of the wire is reduced, thereby reducing the stray parameters such as the parasitic inductance of the power supply itself, and improving the on-state current rise rate di / dt of the RSD; in addition, the RSD is fixed by surrounding copper foil welding, On the one hand, it is beneficial to accelerate the heat dissipation of RSD, on the other hand, it increases the current channel on the PCB, which has the function of evenly distributing the current direction, and improves the current flow capacity of the pulse power supply module.

Description

technical field [0001] The invention belongs to the technical field of high-power and high-density pulses, and more particularly relates to an RSD-based pulse power supply module. Background technique [0002] High-power pulse power supply (megawatt-level power supply) is to quickly compress, convert or directly release the stored high-density energy to the load. It is widely used in controlled thermonuclear fusion, high-pressure dust removal, organic wastewater treatment and other fields; existing The pulse power supply technology in the technology uses the capacitor energy storage discharge method, and most of them use mechanical spark gaps or non-contact ion devices such as hydrogen thyratrons as discharge switches. During the switch-on process, the switch must withstand a large on-state current rise rate di / dt. Driven by the fields of national defense and economy, the increase of the on-state current rise rate di / dt of the switch will approach the working limit of the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/57
Inventor 梁琳王石磊陈材
Owner HUAZHONG UNIV OF SCI & TECH