基于MATLAB的变频器整流侧输入电流的谐波分析

由于变频器中非线性元件的存在,会产生由非正弦电流、电压引起的谐波.利用MATLAB/Simulink动态仿真研究分析其输入侧的谐波特性及功率因数,根据谐波特性及谐波危害找到抑制谐波的方法,比较直观地给出变频器输入侧的频谱分布,为变频器的设计提供了一种很好的研究方法,同时验证了理论分析与仿真结果的一致性.

Harmonic Analysis about the Transducer Rectifier Input Current Based on MATLAB

The nonlinear elements in the transducer can lead to harmonic generation which is caused by the non-sinusoidal current and voltage. In this paper, the characteristic of input side harmonics is theoretically analyzed. Through using the software MATLAB/Simulink, the harmonic characteristics and power factors are dynamically simulated. According to the characteristics and hazards of harmonics, the methods suppressing harmonic are found. This paper not only more intuitively gives the spectrum distribution of input side of the transducer, but also provides a good method for the design of the transducer. Lastly, the consistency of the theoretical analysis and simulation results is verified.