摘要
本文应用电磁场数值计算方法对一种新型电抗器———干式半芯电抗器的电抗特性进行了计算。首先采用场路耦合法建立干式半芯电抗器的三维时变电磁场的时步有限元数值计算模型,求解此模型得到在正弦电压激励下通过电抗器的非正弦周期电流;然后根据傅里叶级数变换,将求得的电流展开成不同频率的分量;最后得到干式半芯电抗器的伏安特性和谐波特性。本文方法用于实例分析和计算,计算结果与实测结果进行了比较,证实方法正确和实用。
In this paper the reactance characteristic of a new kind of reactor- dry type half- iron- core reactor is calculated with electromagnetic field numerical method. First, the time- stepped finite element numerical calculation model of the 3D time- varying electromagnetic field of the reactor is set up using field- circuit coupling method, by solving the model, the non- sinusoidal periodic current through the reactor is obtained under the sinusoidal voltage source. Then, with Fourier transform the current is decomposed to different frequency components. Last, the V- A and harmonic characteristic of the reactor is obtained. The method proposed is applied to actual analysis and calculation. By comparing the results of the calculations with the experimental results, the method is proved to be correct and effective.
出处
《电工电能新技术》
CSCD
2004年第1期68-71,76,共5页
Advanced Technology of Electrical Engineering and Energy
关键词
场路耦合法
半芯电抗器
电抗特性
field-circuit coupling
half-iron-core reactor
reactance characteristic
