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LMMN-Based Adaptive Control for Power Quality Improvement of Grid Intertie Wind–PV System

机译：基于LMMN的自适应控制，改善电网互联风电系统的电能质量

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摘要

A new topology comprising of wind-turbine-driven synchronous generator (SG) and solar photovoltaic (PV) array for renewable energy harvesting is proposed in this paper. The stochastic inputs for the proposed system are agitated using nonlinear time-dependent parameters such as varying wind speed and changing solar insolation. The speed variations are absorbed using back-to-back interfaced power electronic converters (PECs), namely, SG side converter (SGC) and utility grid side converter (UGC) with a common dc link where a solar PV array is tied directly. The power injection into the utility grid is leveled by the optimal utilization of the PECs. The SGC uses vector control (VC) for speed control of the SG and maintains unity power factor (UPF) at stator terminals. UGC acquires its switching pulses with proper application of least mean mixed-norm (LMMN) control technique. The new application of LMMN control scheme is used for the compensation of harmonics and for the extraction of fundamental load component. The dc-link voltage is regulated using a proportional integral controller. A prototype is developed and tested under different conditions of sudden changes in load, wind-velocity variations, and varying solar PV insolation. The power sharing scheme proves to be effective. The power quality issues are also addressed and mitigated effectively. The performance is exhibited for the validation of the proposed system and its control.
机译：本文提出了一种由风力发电机驱动的同步发电机（SG）和太阳能光伏（PV）阵列组成的新拓扑，用于可再生能源的收集。所建议系统的随机输入是使用与时间有关的非线性参数进行搅动的，例如随风速变化和日照变化而变化的参数。速度变化通过背靠背接口的电力电子转换器（PEC）来吸收，即具有公共dc链路的SG侧转换器（SGC）和公用电网侧转换器（UGC），其中直接将太阳能PV阵列连接在一起。通过PEC的最佳利用来均衡注入公用电网的功率。 SGC使用矢量控制（VC）来控制SG的速度，并在定子端子上保持单位功率因数（UPF）。教资会通过适当应用最小均值混合范数（LMMN）控制技术来获取其开关脉冲。 LMMN控制方案的新应用用于谐波补偿和基本负载分量的提取。使用比例积分控制器调节直流母线电压。在负载突然变化，风速变化以及太阳能光伏日射量变化的不同条件下开发并测试了原型。功率共享方案证明是有效的。电能质量问题也得到有效解决和缓解。该性能用于验证所提出的系统及其控制。

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