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Power switch tube driving method and system based on closed-loop control

A power switch tube, closed-loop control technology, applied in the fields of power electronics and electrical engineering, can solve problems such as insufficient suppression, and achieve the effects of reducing voltage stress, good versatility, and increasing turn-on time

Active Publication Date: 2017-04-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) Insufficient suppression of du / dt and di / dt during turn-on and turn-off

Method used

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  • Power switch tube driving method and system based on closed-loop control
  • Power switch tube driving method and system based on closed-loop control
  • Power switch tube driving method and system based on closed-loop control

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Embodiment Construction

[0028] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 Shown is the structural diagram of the power switch tube drive system based on closed-loop control provided by the present invention, including a ramp voltage reference signal generation circuit, a voltage feedback circuit, an error adjustment circuit and a drive power amplifier circuit; when the switch command is issued to turn on or off command, the slope voltage reference signal generation circuit generates a linearly rising or falling slope voltage reference signal as the input reference voltage V ref , the voltage feedback circuit generates a voltage feedback signal U f , with the aforementioned input reference voltage V ref The error signal is generated by comparison, and the error adjustment circuit is used for the aforementioned voltage feedback signal U f and input reference voltage V ref The error is am...

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Abstract

The invention discloses a power switching tube driving method based on closed-loop control, which comprises the steps of generating ramp voltage reference signals with linear rising and linear declining by a ramp voltage reference signal generating circuit according to connecting or disconnecting commands of switch control signals; introducing a voltage signal as feedback quantity from a power output end; comparing the ramp voltage reference signals and the introduced voltage signal to generate an error, and carrying out amplification adjustment on the error to generate a driving signal; and amplifying the driving signal to generate driving voltage, and driving a power switching tube to realize linear rising or linear declining of load voltage or power switching tube voltage along with the given ramp signals. The method adopts a control manner that a closed loop is adopted to control the linear change of the load voltage, so that the linear change of the load voltage or the power switching tube voltage can be well controlled under different semiconductor devices, different environmental conditions and different load conditions. The invention also discloses a power switching tube driving system based on the closed-loop control.

Description

technical field [0001] The invention belongs to the field of power electronics and electric engineering, and relates to a power switch tube drive technology based on closed-loop control, which can control the linear change of the output load voltage (or power switch tube voltage) during the on-off process of a solid-state power controller. Background technique [0002] Solid State Power Controller (SSPC for short) is an important part of the solid-state power distribution system. control signals to the supercomputer and report its status information. It has the advantages of no contact, no arc, no noise, fast response, low electromagnetic interference, long life, high reliability, and easy computer remote control. It is being widely used in aircraft, tanks, ships, and civil distribution networks. [0003] In order to ensure the safety of the power distribution system, it is necessary to control the load voltage rise rate (du / dt) during the opening of the SSPC to reduce the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/296
Inventor 王莉阮立刚金鑫
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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