基于傅里叶分解原理的同步电机三次谐波磁场分析  

Analysis of 3rd Harmonic Magnetic Field in Synchronous Generators Based on Fourier Series

作　　者：刘建国[1] 万火金[1] 阙善材 

机构地区：[1]南昌大学,江西南昌330031 [2]南昌ABB发电机有限公司,江西南昌330031

出　　处：《微特电机》2010年第6期34-36,共3页Small & Special Electrical Machines

摘　　要：介绍了一种基于傅里叶级数分解原理用于同步发电机中三次谐波磁场分析的新方法,根据该方法,同步电机一个极距将分为三段进行研究,三次谐波磁密幅值分别由这三段磁密积分后代数相加得到。计算不同的励磁电流下的三次谐波磁密,从而得到三次谐波特性曲线,该曲线可以反映出电机一个极距下三段的饱和程度。根据谐波励磁系统的要求和三次谐波特性曲线,设计者较容易找到电机设计中的缺陷或指导新产品开发。文中给出了算例和谐波磁场特性的调整方法。Based on the Fourier series principle,a new method for analyzing 3rd harmonic magnetic field in synchronous generators was presented in this paper.According to the method,the study for one pole pitch of a generator was divided into 3 sections,and the magnitude of 3rd harmonic magnetic field was summed by the algebraic sum of the integral from the 3 sections.Calculating the magnetic density under different field currents,the characteristics of 3rd harmonic magnetic field can be calculated,and the curve indicates the saturation of the pole in 3 sections.Designer can find the faults of the generator from the curve and corresponding saturation status.The example and improvement means were given in the end.

关 键 词：同步电机 三次谐波 磁场 傅里叶 

分 类 号：TM341[电气工程—电机]