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标题：基于最低损耗下无刷双馈电机的最大风能跟踪 |
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作者：高炳春，刘勇 |
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| 2018年第10期 访问次数：268次 |
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摘要：风力发电系统存在的损耗问题，将直接影响传统功率反馈控制对发电机的最大功率给定，以及机组运行的效率。该文基于无刷双馈风力发电系统，在功率解耦控制的基础上，通过对发电机运行的稳态等效电路和最大风能跟踪机理的分析研究，提出最优功率给定计算模型的最大风能跟踪控制策略，该方法通过计算参考功率的取值，给定无刷双馈发电机最优无功，保证风电系统在输出最大功率的同时降低系统自身损耗，实现风能利用率的最大化。通过构建无刷双馈风力发电系统的仿真模型，将文中方法与传统功率反馈控制相比较，仿真结果表明该策略的可行性和有效性。
关键词：风力发电系统；无刷双馈发电机；最大风能跟踪；损耗功率
Abstract: The loss power of wind power generation system has a direct impact on the maximum power given to the generator by traditional power feedback control and the efficiency of the wind turbine. For the brushless doublyfed wind power generation system, the optimum power calculation model of the wind tracking control strategy was proposed, based on the power decoupling control, the steadystate equivalent circuit of the generator and the maximum wind energy tracking mechanism were analyzed, this method given the optimal reactive power of brushless doublyfed generator by calculating the reference power, and ensured the maximum output of wind power system while reducing the systems own losses and maximizing the utilization of wind energy. By constructing the simulation model of brushless doublyfed wind power generation system, the proposed method was compared with the traditional power feedback control strategy, the simulation results verified the feasibility and effectiveness of the proposed strategy.
Key words: wind power system; brushless doublyfed generator; maximum power point tracking; loss power
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