高频链矩阵变换器解结耦调制策略在风电场中的应用

由于风电场运行的波动性和不确定性，使高频链矩阵变换器输出侧电压电流谐波含量较高。为此，提出一种应用于风电场运行的高频链矩阵变换器解结耦调制策略。基于解结耦调制思想从单向可控开关的角度分析由双向开关组成的矩阵变换器，并引入极性选择信号实现拓扑解耦。进而通过优化空间矢量信号与极性选择信号的逻辑组合，进一步优化双向开关驱动逻辑，降低换流难度，使得矩阵变换器输出电压电流谐波含量明显减少，改善了电能质量。Matlab/Simulink仿真验证了所提调制策略的有效性与可行性。

Application of De-re-coupling Modulation Strategy for High Frequency Link Matrix Converter in Wind Farm

Due to the volatility and uncertainty of wind farm operation， the harmonic content of voltage and current on the output side of high-frequency link matrix converter is relatively high. To solve this problem， a high-frequency link matrix converter de-re-coupling modulation strategy for wind farm operation is proposed. The proposed strategy uses the idea of de-re-coupling modulation to analyze matrix converters composed of bidirectional switches from the perspective of unidirectional controllable switches， and introduces polarity selection signals to achieve topology decoupling. Furthermore， by optimizing the logical combination of the space vector modulation signal and the polarity selection signal， the bidirectional switch driving logic is further optimized， and the difficulty of commutation is reduced. The harmonic content of the output voltage and current of the matrix converter is significantly reduced， and the power quality is improved. Matlab/Simulink simulation verifies the effectiveness and feasibility of the proposed modulation strategy.