Engineering Research Equipment Grant: Continuous Operating Laser and Instrumentation Equipment

工程研究设备补助金：连续运行激光和仪器设备

• 批准号: 8906601
• 负责人: Dennis Carroll
• 金额: $ 2.07万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-15 至 1990-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906601&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Grant; Continuous

A new type of semiconductor switching device appears to have great potential for power system applications. It is called the photoconductive circuit element or PCE. It can be switched rapidly, will conduct large currents and hold off very high voltages. It is also a bilateral device, and the power rating of a single unit can be easily scaled to meet the application. The main objective of the proposed research is to investigate the feasibility of this device for circuit interruption in ac power systems. The project will conduct research along three basic fronts: (1) semiconductor design concepts, (2) device fabrication and testing, and (3) system simulation studies. In the first area, basic research will be conducted to develop more accurate transient and steady-state photoconductive device models. A finite difference approach will be used to develop a precise reference model for the device, from which simpler reduced models will be formulated as equivalent circuits. These will be useful in future system simulation studies for improved evaluation of the proposed power applications. In the fabrication area, low-voltage, scaled-down prototype devices will be fabricated and tested for verification of theoretical design concepts, as well as for validation of transient and steady-state device models. In addition, these devices will be used in scaled-down (but accurate) replicas of power circuit applications, for direct experimental verification of full-scale simulation results. The equipment requested in this proposal represents a key ingredient for the necessary experimental testing of this new power switching concept.

一种新型的半导体开关器件在电力系统中具有巨大的应用潜力。它被称为光导电路元件或PCE，它可以快速开关，可以传导大电流，并能承受非常高的电压。它也是一种双边装置，单个单元的额定功率可以很容易地缩放以满足应用。本研究的主要目的是探讨该装置在交流电源系统中电路中断的可行性。该项目将沿着三个基本前沿进行研究：(1)半导体设计概念，(2)器件制造和测试，以及(3)系统仿真研究。在第一个领域，将进行基础研究，以建立更精确的瞬态和稳态光导器件模型。有限差分方法将用于为该设备开发精确的参考模型，从该模型中，更简单的简化模型将被表述为等效电路。这些将有助于未来的系统仿真研究，以改进所提出的功率应用的评估。在制造领域，低压，缩小的原型设备将被制造和测试，以验证理论设计概念，以及验证瞬态和稳态设备模型。此外，这些设备将用于按比例缩小（但准确）的电源电路应用复制品，用于全尺寸模拟结果的直接实验验证。本提案中要求的设备是对这种新的功率开关概念进行必要实验测试的关键因素。