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A New Real Time Lyapunov Based Controller for Power Quality Improvement in Unified Power Flow Controllers Using Direct Matrix Converters

机译：一种新的基于Lyapunov的实时控制器，用于使用直接矩阵转换器的统一潮流控制器中提高电能质量

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摘要

This paper proposes a Direct Matrix Converter operating as a Unified Power Flow Controller (DMC-UPFC) with an advanced control method for UPFC, based on the Lyapunov direct method, presenting good results in power quality assessment. This control method is used for real-time calculation of the appropriate matrix switching state, determining which switching state should be applied in the following sampling period. The control strategy takes into account active and reactive power flow references to choose the vector converter closest to the optimum. Theoretical principles for this new real-time vector modulation and control applied to the DMC-UPFC with input filter are established. The method needs DMC-UPFC dynamic equations to be solved just once in each control cycle, to find the required optimum vector, in contrast to similar control methods that need 27 vector estimations per control cycle. The designed controller's performance was evaluated using Matlab/Simulink software. Controllers were also implemented using a digital signal processing (DSP) system and matrix hardware. Simulation and experimental results show decoupled transmission line active (P) and reactive (Q) power control with zero theoretical error tracking and fast response. Output currents and voltages show small ripple and low harmonic content.
机译：本文基于李雅普诺夫直接法，提出了一种直接矩阵变换器作为统一潮流控制器（DMC-UPFC），具有先进的UPFC控制方法，在电能质量评估中表现出良好的效果。该控制方法用于适当矩阵切换状态的实时计算，确定在随后的采样周期应采用哪种切换状态。控制策略会考虑有功和无功潮流参考，以选择最接近最优矢量变频器。建立了将这种新型实时矢量调制和控制应用于带有输入滤波器的DMC-UPFC的理论原理。与每个控制周期需要27个矢量估计的类似控制方法相比，该方法需要在每个控制周期中仅对DMC-UPFC动态方程求解一次，以找到所需的最佳矢量。使用Matlab / Simulink软件评估了设计控制器的性能。还使用数字信号处理（DSP）系统和矩阵硬件来实现控制器。仿真和实验结果表明，解耦的传输线有功（P）和无功（Q）功率控制具有零理论误差跟踪和快速响应。输出电流和电压显示出小的纹波和低谐波含量。

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