光伏装置中性点箝位逆变器控制与调制的改进方案

2017 5th International Symposium on Electrical and Electronics Engineering (ISEEE) Pub Date : 2017-10-01 DOI:10.1109/ISEEE.2017.8170639

V. Oleschuk, V. Ermuratskii

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引用次数: 3

摘要

本文介绍并比较了光伏系统中三个二极管箝位变流器的控制算法和脉宽调制(PWM)算法，保证了系统共模电压的最小化和输出电压的对称性。所分析的装置还包括三串太阳能电池板，与相应逆变器的直流输入连接，逆变器的输出具体与电力变压器的相应绕组连接。仿真结果表明，该系统的绕组电压谱得到了显著改善，从而保证了变压器逆变器侧绕组铜损的降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Modified schemes of control and modulation of neutral-point-clamped inverters of PV installation

The paper describes and compares algorithms of control and pulsewidth modulation (PWM) of three diode-clamped converters of PV system, insuring both minimization of common-mode voltage and symmetry of the output voltage of system. The analyzed installation includes also three strings of solar panels, connected with dc inputs of the corresponding inverters, and outputs of the inverters are connected specifically with the corresponding windings of power transformer. Results of simulation show remarkable improvement of spectra of winding voltage of the system, and this fact insures to decrease copper losses in the inverter-side windings of power transformer.

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2017 5th International Symposium on Electrical and Electronics Engineering (ISEEE)

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