电子元件与材料2026，Vol.45Issue(3)：347-356,10.DOI:10.14106/j.cnki.1001-2028.2026.1363
基于多指交叉结构与SMBO协同优化的低寄生电容SCR保护器件设计
Design of SCR protective devices with coordinated optimization of low parasitic capacitance and high robustness
石恒初 1周海成 2游昊 3杨远航 3杨桥伟3
作者信息
- 1. 上海交通大学 电气工程学院,上海 200240||云南电网有限责任公司,云南 昆明 650011
- 2. 云南电网有限责任公司普洱供电局,云南 普洱 655000
- 3. 云南电网有限责任公司,云南 昆明 650011
- 折叠
摘要
Abstract
A unique low-parasitic-capacitance thyristor device was developed to solve the problem of balancing high resilience and low parasitic capacitance in thyristor output stages for relay protection.In order to improve heat dissipation and current distribution uniformity,this device used a shared cathode/anode arrangement with a multi-finger cross-bar to lower junction capacitance series impedance.Parasitic capacitance,trigger voltage,holding voltage,on-resistance,and thermal resistance were the main objectives of multi-objective adaptive collaborative optimization,which was accomplished by combining gradient-boosted decision tree algorithms,multiphysics coupling modeling,and sequence model optimization.The device has a holding voltage between 4.0 V and 5.0 V,on-resistance between 1.8 mΩ·mm2 and 3.2 mΩ·mm2,and thermal resistance between 30 K/W and 45 K/W;simulations show that it has balanced static properties.The device outperforms traditional structures in real-world applications with temperature adaptability from-55℃to 175℃,a signal distortion rate from 0.8%to 1.8%,a false trip rate from 0.05%to 0.18%,a transient reaction time of 1.6 ns,and an average clamping voltage of 5.4 V.A device-level solution for high-frequency,high-sensitivity relay protection systems is provided by resolving the contradiction between low-capacitance triggering and high reliability through synergistic optimization of the cross-structure and machine learning.关键词
晶闸管/低寄生电容/物理场耦合/序列模型优化算法/继电保护Key words
silicon controlled rectifier/low parasitic capacitance/physical field coupling/sequential model optimization algorithm/relay protection分类
信息技术与安全科学引用本文复制引用
石恒初,周海成,游昊,杨远航,杨桥伟..基于多指交叉结构与SMBO协同优化的低寄生电容SCR保护器件设计[J].电子元件与材料,2026,45(3):347-356,10.
