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首页> 外文期刊>IEEE Transactions on Industry Applications >Modeling and Control of a Variable-Speed Constant-Frequency Synchronous Generator With Brushless Exciter
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Modeling and Control of a Variable-Speed Constant-Frequency Synchronous Generator With Brushless Exciter

机译：无刷励磁机变速恒频同步发电机的建模与控制

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摘要

This paper presents the modeling, control, and implementation of a novel variable-speed constant-frequency power generation system for renewable and distributed energy applications. The generation system consists of a wound-rotor generator, a brushless exciter and a low-rating controlled power converter. The main generator is a doubly fed induction machine which is operated as a synchronous generator. The advantages of the proposed system are reduced harmonic injection to power grid, wide speed operation range covering both subsynchronous and super-synchronous speeds, self var support, and increased reliability. It can be directly applied to wind power generators, small-scale hydroelectric generators, stand-alone diesel and gasoline generators, and aerospace and naval power generation systems where a variable speed turbine/engine is employed. An equivalent circuit model of a doubly fed generator was developed incorporating stator and rotor iron losses. Then the control of a standalone generation system is developed based on the mathematical model. Detailed implementation procedure is given. An experimental system and its control were implemented using an embedded real-time digital signal processor. Measurements of the experimental system validated the system design and readiness for prototyping in a relatively large power range.
机译：本文介绍了一种用于可再生和分布式能源应用的新型变速恒频发电系统的建模，控制和实现。发电系统由绕线转子发电机，无刷励磁机和低速受控功率转换器组成。主发电机是作为同步发电机运行的双馈感应电机。拟议系统的优点是减少了向电网的谐波注入，覆盖次同步和超同步速度的宽速度运行范围，自变量支持以及提高的可靠性。它可以直接应用于使用变速涡轮/发动机的风力发电机，小型水力发电机，独立柴油和汽油发电机以及航空航天和海军发电系统。结合定子和转子铁损，开发了双馈发电机的等效电路模型。然后，基于数学模型开发了独立发电系统的控制。给出了详细的实现过程。实验系统及其控制是使用嵌入式实时数字信号处理器实现的。实验系统的测量结果验证了系统设计和在较大功率范围内为原型开发做好准备的能力。

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