Genetic algorithm based design of the active damping for a LCL-filter three-phase active rectifier
Genetic algorithm based design of the active damping for a LCL-filter three-phase active rectifier
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DOI：
10.1109/tpel.2003.820540
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发表时间：
2004-01
期刊：
影响因子：
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通讯作者：
Marco Liserre;A. Dell'Aquila;F. Blaabjerg
中科院分区：
文献类型：
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作者：
Marco Liserre;A. Dell'Aquila;F. Blaabjerg
LCL滤波器的使用减轻了三相有源整流器在电网中注入的开关涟漪。然而，稳定性问题可能出现在电流控制回路中。为了克服它们，可以插入阻尼电阻器，代价是降低效率。相反，主动阻尼的使用似乎真的很有吸引力，但它往往受到限制，使用更多的传感器相对于标准控制和复杂的调谐过程。本文介绍了一种新的主动阻尼方法，它不需要使用更多的传感器，并可以使用遗传算法进行调整。它包括在转换器调制器的参考电压上添加滤波器。该滤波器的调谐过程很容易完成，对于广泛的采样频率，使用遗传算法。该方法仅用于滤波器参数的最优选择，不需要在线实现。因此，所得到的主动阻尼解决方案不需要新的传感器或复杂的计算。此外，在该文件中特别注意的是由于主动阻尼的引入系统的动态。
The use of a LCL-filter mitigates the switching ripple injected in the grid by a three-phase active rectifier. However stability problems could arise in the current control loop. In order to overcome them a damping resistor can be inserted, at the price of a reduction of the efficiency. On the contrary the use of the active damping seems really attractive but it is often limited by the use of more sensors respect to the standard control and by the complex tuning procedure. This paper introduces a new active damping method that does not need the use of more sensors and that can be tuned using genetic algorithms. It consists of adding a filter on the reference voltage for the converter's modulator. The tuning process of this filter is easily done, for a wide range of sampling frequencies, with the use of genetic algorithms. This method is used only for the optimum choice of the parameters of the filter and an on-line implementation is not needed. Thus the resulting active damping solution does not need new sensors or complex calculations. Moreover, in the paper particular attention is devoted to the dynamics of the system due to the introduction of the active damping.