Finite Control Set Model Predictive Control for Grid-Connected AC–DC Converters With LCL Filter
Finite Control Set Model Predictive Control for Grid-Connected AC–DC Converters With LCL Filter
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DOI：
10.1109/tie.2017.2750627
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发表时间：
2018-04
影响因子：
7.7
通讯作者：
P. Falkowski;A. Sikorski
中科院分区：
文献类型：
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作者：
P. Falkowski;A. Sikorski
本文提出了有限控制集模型预测控制 (FCS-MPC) 方法的两种新实现，应用于具有电感.电容.电感 (LCL) 滤波器的交流-直流转换器。尽管 LCL 滤波器有其优点，但它会引起电网电流的强烈谐振，并且还会带来更加复杂的控制问题。新解决方案通过消除低阶电网电流谐波并降低对电网电压畸变的敏感度，采用主动阻尼算法改进了 FCS-MPC。新方法，即 PCi1i2uc 和 PCi1i2uc-2steps 提出了使用转换器侧电流、线路侧电流和电容器电压的多变量方法。另一项改进涉及扩展 PCi1 i2uc-2steps 中的预测范围。这两种方法都在稳态和瞬态以及电网电压扰动下进行了测试和比较。该方法还与具有主动阻尼的预测控制算法进行了比较。仿真结果和实验测量验证了所开发的控制方案，并显示出高质量的电网电流（低 THDi 值）、高动态性能以及在电网电压畸变条件下的抗扰度。
This paper presents two new implementations of finite control set model predictive control (FCS-MPC) methods applied to ac–dc converters with an inductive.capacitive.inductive (LCL) filter. The LCL filter, despite its advantages, can cause a strong resonance in the grid current and also pose a substantially more complex control problem. The new solutions improve the FCS-MPC with an active damping algorithm by eliminating low-order grid current harmonics and decreasing sensitivity to grid voltage distortion. The new methods, i.e., PCi1i2uc and PCi1i2uc-2steps propose multivariable approaches using converter-side current, line-side current, and capacitor voltage. Another improvement involves extending the prediction horizon in PCi1 i2uc-2steps. Both methods have been tested and compared in steady and transient states as well as under grid voltage disturbances. The methods were also compared with a predictive control algorithm with active damping. The simulation results and experimental measurements validate the developed control schemes and show high quality of grid current (low THDi value), high dynamic performance, and immunity under distorted grid voltage conditions.