CAJ | 학술논문

为了提高逆变器的输出电压谐波分析效果，提出了基于希尔伯特-黄变换（HHT）方法的逆变器输出电压谐波分析方法。该方法包括经验模态分解法（EMD）和Hilbert变换（HT）。在分析双闭环控制逆变器的基础上，对逆变器的输出电压进行EMD分解得到本征模态函数（IMF），对其进行Hilbert变换，得到输出电压的频率和幅值分布，并分析谐波分量的参数。设计了基于LabVIEW平台的逆变器谐波检测和分析装置，对谐波分量实时检测和分析。实验结果表明，该方法精确地计算电压的参数，提取和分析了谐波分量，为下一步的谐波抑制方法研究提供了有力的支持。
위료제고역변기적수출전압해파분석효과，제출료기우희이백특-황변환（HHT）방법적역변기수출전압해파분석방법。해방법포괄경험모태분해법（EMD）화Hilbert변환（HT）。재분석쌍폐배공제역변기적기출상，대역변기적수출전압진행EMD분해득도본정모태함수（IMF），대기진행Hilbert변환，득도수출전압적빈솔화폭치분포，병분석해파분량적삼수。설계료기우LabVIEW평태적역변기해파검측화분석장치，대해파분량실시검측화분석。실험결과표명，해방법정학지계산전압적삼수，제취화분석료해파분량，위하일보적해파억제방법연구제공료유력적지지。
To improve the effect of harmonic analysis for inverter’s output voltage, this paper presents a method for harmonic analysis based on Hilbert-Huang transform (HHT). The method includes empirical mode decomposition (EMD) and Hilbert transform (HT). Based on analyzing the double closed loop control inverter, the output voltage is decomposed into intrinsic mode functions (IMF) by EMD method. It is then transformed with HT to obtain the output voltage frequency and amplitude distribution, and to analyze harmonic parameters. Using LabVIEW, a device is designed to detect and analyze the harmonic of the inverter in real time. Experimental results indicate that the method can obtain parameters of output voltage and harmonic components accurately, and offers strong support for harmonic suppression research in the future.