Harmonic Distortion Indices for Experimental Characterization of Variable Frequency Drives

IF 3.4 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2024-10-04 DOI:10.1109/ACCESS.2024.3474176

Angel Arranz-Gimon;Daniel Morinigo-Sotelo;Angel Zorita-Lamadrid;Oscar Duque-Perez

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引用次数: 0

Abstract

Frequency converters controlling electric motors are widely used as they increase the functionality of the equipment and improve energy efficiency. However, it is inevitable that the quality of the power delivered to the motor does not have the same characteristics as when it is supplied from the mains. Due to the impact of the power quality on the operation of the motor and even on its possible diagnosis, it is desirable to characterise the power quality, preferably by means of rates or indices that reflect the quality as completely as possible. However, the rates specified in the standards and in the literature are designed to characterise the quality delivered from the grid and are not well adjusted to the features of the signal at the output of the converter with a high interharmonic and harmonic content at high and low frequencies, and with variable fundamental frequencies. For this reason, this work proposes a set of distortion rates and the appropriate procedures for calculating them to reflect as reliably as possible the quality of the energy delivered by the converter to the motor. To verify the validity of the proposal, several practical examples are presented with induction motors fed from different frequency converters.

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用于变频驱动器实验表征的谐波失真指标

控制电机的变频器被广泛使用，因为它能增强设备的功能并提高能效。但不可避免的是，输送给电机的电能质量并不具备与市电供电时相同的特性。由于电能质量对电机运行的影响，甚至对可能的诊断也有影响，因此最好对电能质量进行表征，最好采用能尽可能全面反映电能质量的比率或指数。然而，标准和文献中规定的比率是针对电网输送的电能质量而设计的，并不能很好地适应变流器输出信号的特点，即高频和低频的谐间和谐波含量较高，且基频可变。因此，本研究提出了一套失真率和适当的计算程序，以尽可能可靠地反映变流器向电机输送能量的质量。为了验证该建议的有效性，本文列举了几个由不同变频器馈电的感应电机的实际例子。

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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来源期刊

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

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