Generalized Accurate Harmonic Calculation Method Based on Discretized Double Fourier Series to Solve Double-Pulse Phenomenon

被引:10
作者
Huang, Songtao [1 ]
Xu, Jinbang [1 ]
Ye, Jie [1 ]
Shen, Anwen [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Artificial Intelligence & Automat, Natl Key Lab Sci & Technol Multispectral Informat, Key Lab Image Proc & Intelligent Control, Wuhan 430074, Peoples R China
关键词
Harmonic analysis; Power system harmonics; Manganese; Fourier series; Voltage; Analytical models; Phase modulation; Dead-time effects; digital sinusoidal pulse width modulation (DSPWM); discretized double Fourier series; double-pulse phenomenon; harmonic calculation; voltage source inverter (VSI); TIME-DOMAIN CHARACTERIZATION; PWM WAVE-FORMS; DIGITAL SPWM; VOLTAGE; INVERTER; SPECTRA;
D O I
10.1109/TIE.2022.3194572
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Harmonic issues have always been paid attention to in electrical systems, and accurate calculation of the amplitude and phase of each harmonic has become one of the research focuses of scholars. This article develops a generalized harmonic closed-form analytical solution for a single-phase voltage source inverter under digital sinusoidal pulsewidth modulation and dead-time effects. This article is the first to point out the double-pulse phenomenon that can occur when using a double Fourier series to solve the harmonic spectrum due to the discontinuity of the dead-time effects and half-cycle integrals. Analysis and data comparison show that this phenomenon can affect the accuracy of harmonic calculations. A discretized double Fourier series method is proposed to solve this phenomenon. Moreover, the problems of missing pulse caused by the modulation under a specific current phase and current zero-crossing are also solved, improving the harmonic calculation's accuracy and generality. Simulation analysis and the results of inverse fast Fourier transform proved the correctness of the optimization method, and the experimental results are obtained on the DSP and SIC platforms, which are in good agreement with the expression calculation results.
引用
收藏
页码:5651 / 5661
页数:11
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