励磁电流脉动对电枢绕组空载电压波形的影响  

Influence of field current pulsation on no-load voltage waveform of armature windings

作　　者：夏永洪[1] 黄劭刚[1] 

机构地区：[1]南昌大学信息工程学院,江西南昌330031

出　　处：《电机与控制学报》2012年第9期21-25,共5页Electric Machines and Control

基　　金：国家自然科学基金(50777030)

摘　　要：为了不影响齿谐波励磁的混合励磁永磁同步发电机的运行性能,需要正确处理好齿谐波磁场的利用与电枢绕组电压波形畸变两者之间的关系,此为利用齿谐波实现混合励磁的关键问题。应用电机理论定性分析了齿谐波励磁系统输出的励磁电流产生脉动的原因,以及该脉动电流产生的附加磁场在电枢绕组中感应谐波电动势的特点。采用在齿谐波励磁系统直流侧并联电容的方法,可以减小励磁电流的脉动,从而削弱其在电枢绕组中引起的谐波电动势。对一台齿谐波励磁的混合励磁永磁同步发电机进行了计算和实验,计算结果和实验结果的比较验证了理论分析的正确性。It needs to correctly handle the relationship between utilization of tooth harmonic magnetic field and armature winding voltage waveform distortion for not affecting the operation performance of the hybrid excitation permanent magnet synchronous generator utilizing tooth harmonic for excitation,which is key problem utilizing tooth harmonic to achieve hybrid excitation.The reason of the field current pulsation provided by the tooth harmonic excitation system and the characteristics of the harmonic electromotive force（EMF） in the armature winding induced by the additional magnetic field were analyzed qualitatively based on the electric machine theory.Employing the method of shunting capacitance in the tooth harmonic excitation system can reduce the pulsation of the field current and weaken the harmonic EMF in the armature winding.Calculation and test are performed for one hybrid excitation permanent magnet synchronous generator utilizing tooth harmonic for excitation,and the comparison of calculated and experimental results verifies the correctness of the theoretical analysis

关 键 词：混合励磁 永磁电机 同步发电机 齿谐波励磁 脉动电流 

分 类 号：TM351[电气工程—电机]