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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Closed-Form Analytic Expression of Total Harmonic Distortion in Single-Phase Multilevel Inverters With Staircase Modulation
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Closed-Form Analytic Expression of Total Harmonic Distortion in Single-Phase Multilevel Inverters With Staircase Modulation

机译:具有楼梯调制的单相多级逆变器中总谐波变形的闭合形式分析表达

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摘要

In this letter, explicit analytic expression of output voltage total harmonic distortion (THD) in staircase modulated single-phase multilevel inverters (MLI) is derived and verified. The revealed nonrecursive formulae is expressed as a simple function of all possible switching angles, valid for generalized MLI irrespectively of the topology and number of voltage levels (odd or even). The proposed expression may be utilized for accurate calculation of THD values, eliminating the risk of underestimation associated with typical frequency-based (numerical) approaches adopted by modern computational software packages.
机译:在这封信中,推导出和验证阶梯调制的单相多级逆变器(MLI)中的输出电压总谐波失真(THD)的显式分析表达。揭示的非疫渡公式表示为所有可能的切换角的简单功能,无论电压电平(奇数或偶数)都有不断地对广义MLI有效。所提出的表达式可以用于精确计算THD值,从而消除了与现代计算软件包采用的典型频率的基于频率(数值)方法相关的低估的风险。

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