Based on the detection and analysis of harmonics of a chemical plant in Dalian city, harmonic amplification caused by capacitor bank and corresponding measures are described.

摘要通过对大连某化工厂谐波的检测和分析，阐述电力电容器组投入时对谐波的放大及应对措施。

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Output voltage of this type ASD is multilevel PWM waveform, and by now there is not perfect theoretical analysis for its harmonics.

这种中压变频器输出电压为多电平pwm脉冲波形，目前对其谐波还没有完善的理论分析。

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This article introduces the emergence ami effect of harmonics, harmonics analysis method and standard, harmonics elimination for being aid to understanding and researching at harmonics.

本文介绍了谐波产生的原因与危害，谐波分析方法与谐波标准，抑制谐波的措施，以有助于对谐波的了解和研究。

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Analysis of the recordings showed that the frequencies within them were spread out into "harmonics" in a way very unlike whales' normal vocalisations and more like those of humans.

BBC: Beluga whale 'makes human-like sounds'