变频励磁激振发源激励电压交变分量之谱分析

Spectrum Analysis of Exciting Voltage AC Component of theTriggering Source on the Varied Frequency Excitation Stimulated Vibtation

本文就三相全控整流桥滞后触发角交变分量△ａ以扫描频率ｆｕ，作正弦变化时，整流电压变化量的谱分布进行了分析与研究。讨论了在整数个数波条件下的近似与精确计算方法，导出了相应谐波分量之计算公式，统程计算表明，近似与精确法所得结果几无差异。文中还就非整数个数波的处理进行了探讨，所得结论可有效地拓宽谱分析的处理范围，文中给出的计算方法和计算结果可为变频励磁根源的研究和实施提供分析依据。

In this article the spectrum distribution of rectified voltage Variation is analysed and Stud-ied concerning 3 full controlled rectifier bridge when the altermating component of lagged triggeringangle vanes sinusoidally with scanning frequency fu(△a).Accurate and approximate calculation meth-ods under integer wave number conditon are discusserl and calculating formulae for relative harmoniccomponents for spectrum analysis are derived.Programmed computation shows that results from ap-proximate and accurate methods coinclder nearly,Handling the non-integer wave number condition isdso studied and obtained conclusion can extend effectly the processing of spectrum analysis,talcula-tion methods and results given in the artide may offer theis for development and implementation of var-ied frequency excitation stimulated vibration.