Capacitor measurements for power electronic applications

Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370) Pub Date : 1999-10-03 DOI:10.1109/IAS.1999.799182

J. Strydom, J. V. van Wyk, J. Ferreira

引用次数: 8

Abstract

Capacitors are utilised in a variety of different ways in power electronic circuits. Typical applications are in snubber, clamping and resonant circuits. For design purposes, it is necessary to make an accurate measurement of the actual behaviour of the capacitance that is added to the circuit under conditions related to those prevailing in a converter. For this purpose, a number of different measurement systems or techniques can be utilised. Four of these measurement systems are compared. These are small signal, variable frequency measurement, large signal quasi-DC measurement, in-situ high voltage measurement and small signal with large bias voltage measurement. Each of these measurement techniques returns characteristic values based on its particular model of the test capacitor. These tests are done on both ceramic and nonceramic capacitors at room temperature. The results are discussed.

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电力电子应用的电容器测量

电容器在电力电子电路中以各种不同的方式使用。典型的应用是缓冲，箝位和谐振电路。为了设计目的，有必要在与变换器中普遍存在的条件有关的情况下，对加到电路中的电容的实际行为进行精确测量。为此目的，可以使用许多不同的测量系统或技术。对这四种测量系统进行了比较。包括小信号变频测量、大信号准直流测量、现场高压测量和小信号大偏置电压测量。这些测量技术中的每一种都根据其特定的测试电容器模型返回特性值。这些测试是在室温下对陶瓷和非陶瓷电容器进行的。对结果进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370)

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