Sensorless vector control of induction machines for variable-speed wind energy applications
Sensorless vector control of induction machines for variable-speed wind energy applications
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DOI：
10.1109/tec.2003.821863
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发表时间：
2004-02
影响因子：
4.9
通讯作者：
Roberto Cárdenas;Rubén Peña
中科院分区：
文献类型：
--
作者：
Roberto Cárdenas;Rubén Peña
提出了一种风力发电并网系统中异步发电机的无速度传感器矢量控制策略。无速度传感器控制系统是基于模型参考自适应系统（MRAS）观测器估计转速。为了调整MRAS观测器并补偿参数变化和不确定性，使用频谱分析算法从转子槽谐波获得速度的单独估计。该算法能够快速跟踪转速的动态变化，具有较高的精度。两个背靠背脉宽调制（PWM）逆变器用于感应发电机与电网的接口。前端转换器也是矢量控制的。直流环节电压的调节使用PI模糊控制器。所提出的无传感器控制策略已在2.5 kW的实验装置上进行了实验验证，该实验装置由风力涡轮机仿真器驱动的感应发电机。风力涡轮机的仿真使用允许高阶风力涡轮机模型的仿真的新颖策略来执行，从而保留所有的动态特性。实验结果表明，所提出的无传感器矢量控制方法获得了高水平的性能。
A sensorless vector-control strategy for an induction generator in a grid-connected wind energy conversion system is presented. The sensorless control system is based on a model reference adaptive system (MRAS) observer to estimate the rotational speed. In order to tune the MRAS observer and compensate for the parameter variation and uncertainties, a separate estimation of the speed is obtained from the rotor slot harmonics using an algorithm for spectral analysis. This algorithm can track fast dynamic changes in the rotational speed, with high accuracy. Two back-to-back pulse-width-modulated (PWM) inverters are used to interface the induction generator with the grid. The front-end converter is also vector controlled. The dc link voltage is regulated using a PI fuzzy controller. The proposed sensorless control strategy has been experimentally verified on a 2.5-kW experimental set up with an induction generator driven by a wind turbine emulator. The emulation of the wind turbine is performed using a novel strategy that allows the emulation of high-order wind turbine models, preserving all of the dynamic characteristics. The experimental results show the high level of performance obtained with the proposed sensorless vector-control method.