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首页> 外文期刊>Transactions of the Institute of Measurement and Control >A vector-controlled doubly-fed induction generator for a variable-speed wind turbine application
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A vector-controlled doubly-fed induction generator for a variable-speed wind turbine application

机译：用于变速风力涡轮机应用的矢量控制双馈感应发电机

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摘要

This paper examines the performance of a vector-controlled doubly-fed induction generator for wind turbine use. The scheme is considered for variable-speed-range applications to produce a greater wind energy capture from varying wind velocity. ,4 major advantage of the doubly-fed scheme over the squirrel-cage generator is the reduced volt-ampere rating of the power converter used to control the rotor current. The singly-fed scheme requires that the power converter is able to carry the full generator output. In order to produce decoupled regulation of active and reactive output power, the rotor current is controlled using field orientation principles. The measurement of rotor position and the grid voltage vector position allows the rotor current to be controlled in a reference frame closely associated with the stator magnetising current. The stator active and reactive power are also measured and fed back into outer P↓(s) and Q↓(s) control loops. The P↓s and Q↓s controllers produce d and q axis rotor current demands for the inner rotor current vector controller. By control of the reactive power loop the generator can be made to produce power at unity power factor. The vector control of rotor current is carried out using a commercial PWM inverter equipped with vector control hardware as standard. The inverter also produces a unity power factor sinusoidal current interface to the grid network. The performance of the scheme is examined using both simulation and experimental results. The decoupling control of active and reactive power is demonstrated and shows the ability to generate power at unity power factor.
机译：本文研究了用于风力涡轮机的矢量控制双馈感应发电机的性能。该方案被考虑用于变速范围应用，以从变化的风速产生更大的风能捕获。 ，4与鼠笼型发电机相比，双馈方案的主要优点是降低了用于控制转子电流的功率转换器的伏安额定值。单馈方案要求功率转换器能够承载全部发电机输出。为了产生有功和无功输出功率的解耦调节，使用磁场定向原理控制转子电流。转子位置和电网电压矢量位置的测量允许在与定子励磁电流紧密相关的参考系中控制转子电流。还测量定子的有功功率和无功功率，并将其反馈到外部P↓（s）和Q↓（s）控制回路中。 P↓s和Q↓s控制器为内部转子电流矢量控制器产生d和q轴转子电流需求。通过控制无功功率环路，可以使发电机产生单位功率因数的功率。转子电流的矢量控制是使用配备了矢量控制硬件的商用PWM逆变器进行的。逆变器还产生到电网的单位功率因数正弦电流接口。使用仿真和实验结果来检查该方案的性能。演示了有功和无功的去耦控制，并显示了以统一功率因数产生功率的能力。

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