简要介绍了GXFW低压消谐装置的应用现状，指出用户对其节能功能尚未引起足够的重视。
This paper simply introduces the application actuality of GXFW used for harmonic elimination, and points out that users pay less attention to energy saving.
为了克服特定消谐PWM技术本身的缺点，提出了一种新的优化特定消谐PWM开关角的优化解法。
To overcome the drawback of selective harmonic elimination PWM technique itself, a novel optimal solution method which optimizes the switching angle of selective harmonic elimination PWM is proposed.
在非线性电阻消谐方式下，正温度系数(PTC)热敏电阻和三次谐波滤波器可以较好地解决零序电压偏高的问题。
Positive temperature coefficient (PTC) thermistor and triple frequency harmonic filter can reduce zero sequence voltage when a nonlinear resistance is used to prevent ferroresonance.
从谐衍射元件的理论出发，讨论了谐衍射透镜在消色差和消热差时的特性。
From the characteristic of harmonic relief patterns, the a thermalization and achromatism of harmonic diffractive element have been studied in the paper.
从谐衍射元件的理论出发，讨论了谐衍射透镜在消色差和消热差时的特性。
From the characteristic of harmonic relief patterns, the a thermalization and achromatism of harmonic diffractive element have been studied in the paper.
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