CAREER: Accelerated Insulation Aging due to Fast, Repetitive Voltage Pulses from Wide Bandgap Power Electronics

职业：宽带隙电力电子设备快速、重复的电压脉冲导致绝缘老化加速

• 批准号: 1942540
• 负责人: Mona Ghassemi
• 金额: $ 50万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-03-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1942540&HistoricalAwards=false
• 关键词: CAREER; Accelerated; Insulation; Aging; due

Title: CAREER: Accelerated Insulation Aging due to Fast, Repetitive Voltage Pulses from Wide Bandgap Power Electronics Abstract: By 2030, it is expected that 80% of all electric power will flow through power electronics systems. Wide bandgap power modules that can tolerate higher voltages and currents than silicon-based modules are the most promising solution to reducing the size and weight of power electronics systems. These wide-bandgap power modules constitute powerful building blocks for power electronics systems, and wide bandgap-based converter/power electronics building blocks are envisaged to be widely used in power grids in low- and medium-voltage applications and possibly in high-voltage applications for high-voltage direct current and flexible alternating current transmission systems. One of the merits of wide bandgap devices is that their slew rates and switching frequencies are much higher than silicon-based devices. However, from the insulation side, frequency and slew rate are two of the most critical factors of a voltage pulse, influencing the level of degradation of the insulation systems that are exposed to such voltage pulses. The shorter the rise time, the shorter the lifetime. Furthermore, lifetime dramatically decreases with increasing frequency. Thus, although wide bandgap devices are revolutionizing power electronics, electrical insulating systems are not prepared for such a revolution; without addressing insulation issues, the electronic power revolution will fail due to dramatically increased failure rates of electrification components. This research plan pioneers overcoming the accelerated aging of insulation systems under wide bandgap-based voltage pulses, and its goal is to characterize, model, and mitigate this insulation degradation issue under atmospheric pressure. The integrated education plan will help to train the next generation of high electric field and electrical insulation engineers/ researchers, who are needed to maintain the competitive vitality of the U.S. power electronics and power system workforce regarding the two trends toward (I) high-power-density designs in various applications and (II) the increasing use of power electronics, leading to the accelerated aging issue. The education plan also includes outreach to students in grades K-12 and underrepresented groups.Accelerated aging and degradation of insulation systems in power system components as a consequence of exposure to the high slew rates (ranging from tens to hundreds of kV/μs) and repetitive (frequencies ranging from hundreds of kHz to MHz) voltage pulses that originate from emerging wide bandgap-based power electronics systems are one of the most significant barriers for the acceptance and utilization of wide bandgap power modules. This research endeavor aims to (1) characterize, (2) model, through a “theoretical-based Multiphysics” approach, and (3) mitigate the accelerated aging problem. Through comprehensive experimental investigations, the accelerated aging issue will be characterized, and the experimental data will also be used to validate the Multiphysics models developed. Furthermore, optimal mitigation methods to solve the accelerated aging problem will be determined through the models that will be developed and verified experimentally. Moreover, high-frequency electromagnetic transient models for rotating machines, transformers, cables, and transmission lines will be developed to determine (i) overvoltages, (ii) electrical stress, and (iii) thermal stress on different components including motor and transformer windings, and stress grading systems in electrical motors and cable terminations under wide bandgap-based voltage pluses.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

职务名称：职业：宽带隙电力电子器件的快速重复电压脉冲加速了绝缘老化摘要：到2030年，预计80%的电力将流经电力电子系统。能够承受比硅基模块更高的电压和电流的宽带隙功率模块是减小电力电子系统的尺寸和重量的最有前途的解决方案。这些宽带隙功率模块构成用于电力电子系统的强大构建块，并且基于宽带隙的转换器/电力电子构建块被设想为广泛用于低压和中压应用中的电网中，并且可能用于高压直流和灵活交流传输系统的高压应用中。宽带隙器件的优点之一是其转换速率和开关频率比硅基器件高得多。然而，从绝缘方面来看，频率和转换速率是电压脉冲的两个最关键的因素，影响暴露于这种电压脉冲的绝缘系统的劣化水平。上升时间越短，寿命越短。此外，寿命随着频率的增加而显著降低。因此，尽管宽带隙器件正在使电力电子技术发生革命性变化，但电气绝缘系统并没有为这种革命做好准备;如果不解决绝缘问题，由于电气化组件的故障率急剧增加，电力革命将失败。这项研究计划率先克服了宽带隙电压脉冲下绝缘系统的加速老化，其目标是在大气压下表征、建模和缓解这种绝缘退化问题。综合教育计划将有助于培养下一代高电场和电气绝缘工程师/研究人员，他们需要保持美国电力电子和电力系统劳动力的竞争活力，这两个趋势是（I）各种应用中的高功率密度设计和（II）电力电子的使用越来越多，导致加速老化问题。该教育计划还包括对K-12年级学生和代表性不足的群体进行宣传。高压摆率导致电力系统部件绝缘系统加速老化和退化（范围从几十到几百kV/μs）和重复（频率范围从数百kHz到MHz）电压脉冲，源自新兴的宽带隙-基于电力电子系统是宽带隙功率模块的接受和利用的最重要的障碍之一。本奋进旨在（1）通过“基于理论的多物理场”方法表征，（2）建模，以及（3）缓解加速老化问题。通过全面的实验研究，加速老化问题的特点，实验数据也将被用来验证开发的多物理场模型。此外，将通过开发和实验验证的模型确定解决加速老化问题的最佳缓解方法。此外，还将开发用于旋转机器、变压器、电缆和输电线路的高频电磁瞬态模型，以确定包括电机和Transformer绕组在内的不同部件上的（i）过电压、（ii）电应力和（iii）热应力，以及在宽带隙下的电动机和电缆终端中的应力分级系统，该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

A Deep Learning Approach for Discrimination of Single- and Multi-Source Corona Discharges

用于区分单源和多源电晕放电的深度学习方法

• DOI: 10.1109/tps.2021.3102115
• 发表时间: 2021
• 期刊: IEEE Transactions on Plasma Science
• 影响因子: 1.5
• 作者: Borghei, Moein;Ghassemi, Mona
• 通讯作者: Ghassemi, Mona

Insulation Materials and Systems for Power Electronics Modules: A Review Identifying Challenges and Future Research Needs

• DOI: 10.1109/tdei.2020.009041
• 发表时间: 2021-02
• 期刊: IEEE Transactions on Dielectrics and Electrical Insulation
• 影响因子: 3.1
• 作者: Boya Zhang;M. Ghassemi;Yunxiao Zhang

Effects of Frequency and Temperature on Electric Field Mitigation Method via Protruding Substrate Combined with Applying Nonlinear FDC Layer in Wide Bandgap Power Modules

• DOI: 10.3390/en13082022
• 发表时间: 2020-04
• 期刊: Energies
• 影响因子: 3.2
• 作者: Maryam Mesgarpour Tousi;M. Ghassemi

A Finite Element Analysis Model for Internal Partial Discharges in an Air-Filled, Cylindrical Cavity inside Solid Dielectric

固体电介质内部充气圆柱形腔内部局部放电的有限元分析模型

• DOI: 10.1109/eic49891.2021.9612268
• 发表时间: 2021
• 期刊: IEEE Electrical Insulation Conference (EIC
• 作者: Borghei, Moein;Ghassemi, Mona;Kordi, Behzad;Gill, Puneet;Oliver, Derek
• 通讯作者: Oliver, Derek

Modeling and Measurement of Internal Partial Discharges in Voids Artificially Made within 3D-Printed Polylactic Acid (PLA) Block

3D 打印聚乳酸 (PLA) 块内人工制造的空隙中内部局部放电的建模和测量

• DOI: 10.1109/ests49166.2021.9512318
• 发表时间: 2021
• 期刊: IEEE Electric Ship Technologies Symposium (ESTS
• 作者: Borghei, Moein;Ghassemi, Mona;Kordi, Behzad;Oliver, Derek
• 通讯作者: Oliver, Derek