理想电压和非理想电压下DFIG电网侧变换器的简单预测直流控制

2013 13th International Conference on Environment and Electrical Engineering (EEEIC) Pub Date : 2013-11-01 DOI:10.1109/EEEIC-2.2013.6737922

M. E. Zarei, B. Asaei

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引用次数: 1

摘要

提出了一种DFIG电网侧变换器的电流控制策略。该方法通过预测电压矢量序列来控制同步帧下变换器的电流。该方法根据电网电压相位扇区和变流器的整流或逆变方式确定变流器电压扇区。在每个变换器电压扇区预测四个电压矢量，每个矢量在一个周期内施加两次，以获得恒定的开关频率和低总谐波失真(THD)。在电网电压不平衡和非正弦条件下，无需额外的控制器，在开关频率不变的情况下注入或吸收正弦电流。以三相并网变流器为例，分析了该控制技术在理想电压和非理想电压下的性能。仿真在MATLAB/SIMULINK环境下进行。

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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A simple predictive direct current control for grid side converter of DFIG under ideal and non-ideal supply voltage

This paper presents a current control strategy for grid side converter (GSC) of DFIG. In this method, voltage vector sequences are predicted to control the current of this converter in synchronous frame. In this method, the converter voltage sector is confirmed according to the grid voltage phase sector and rectifier or inverter mode of the converter. Four voltage vectors are predicted at each converter voltage sector and each vector is applied two times in a period to have a constant switching frequency and low total harmonic distortion (THD). Under unbalanced and non-sinusoidal grid voltage conditions, without extra controller, the proposed technique injects or absorbs sinusoidal current while the switching frequency is constant. A three phase grid connected converter is used to analyze the behavior of proposed control technique under ideal and non-ideal supply voltage. The simulation is carried out in MATLAB/SIMULINK environment.

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2013 13th International Conference on Environment and Electrical Engineering (EEEIC)

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