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首页> 外文期刊>Power Electronics, IET >Numerical-based frequency domain controller design for stand-alone brushless doubly fed induction generator power system
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Numerical-based frequency domain controller design for stand-alone brushless doubly fed induction generator power system

机译：独立式无刷双馈感应发电机电源系统的基于数值的频域控制器设计

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摘要

Brushless doubly fed induction generator (BDFIG) shows high reliability in either grid-connected or stand-alone applications due to its brushless structure. However, the brushless structure results in a complicated electromagnetic feature. The BDFIG controller design is thus challenged. The recent controller design either ignores the usefully model information or requires the complicated feedforward terms. Besides, the bandwidth restriction exists if the dual-loop control is applied. To overcome these problems, this study proposes a numerical-based frequency domain design method and applies it to a CW-current-oriented stand-alone BDFIG system with dual-loop control. The control objects are developed as transfer function forms and derived from the complete BDFIG model. Then the PI controllers for inner current loops and outer voltage loop are designed step by step, and the previous design result is considered in the recent step. In this way, more model and controller information are considered, and the bandwidth limitation can be eliminated. The design steps are presented in this study. The results show that the good steady and dynamic performances of the voltage regulation can be obtained compared with the traditional methods, which is practically important for a stand-alone BDFIG system.
机译：无刷双馈感应发电机（BDFIG）由于其无刷结构，在并网或独立应用中均显示出高可靠性。然而，无刷结构导致复杂的电磁特征。因此，BDFIG控制器的设计面临挑战。最近的控制器设计要么忽略了有用的模型信息，要么需要复杂的前馈项。此外，如果应用双环控制，则存在带宽限制。为了克服这些问题，本研究提出了一种基于数值的频域设计方法，并将其应用于具有双回路控制的面向CW电流的独立BDFIG系统。控制对象被开发为传递函数形式，并从完整的BDFIG模型派生而来。然后逐步设计用于内部电流回路和外部电压回路的PI控制器，并在最近的步骤中考虑先前的设计结果。这样，可以考虑更多的模型和控制器信息，并且可以消除带宽限制。本研究介绍了设计步骤。结果表明，与传统方法相比，可以获得良好的稳态和动态稳压性能，这对于独立的BDFIG系统而言非常重要。

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