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Coordinated Control for Low Voltage Ride Through in PMSG Wind Turbines

机译:PMSG风力涡轮机中低电压乘车的协调控制

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This work proposes a control strategy for permanent magnet synchronous generator (PMSG) based wind energy conversion systems (WECSs) to improve low voltage ride through (LVRT) capabilities. The nonlinear relationship between the generator speed and DC-link voltage is considered by using feedback linearisation. To support the grid during LVRT, the DC-link voltage is controlled by the machine side converter (MSC). The kinetic energy stored in the wind turbine inertia is used to compensate for lower voltage. Further, pitch angle control is used to ensure stable operation, and to guarantee the rotor speed does not exceed the rated value. A simulation of a 2MW PMSG wind turbine is conducted to validate the proposed control strategy.
机译:这项工作提出了一种基于永磁同步发电机(PMSG)的风能转换系统(WECS)的控制策略,以通过(LVRT)能力来提高低电压骑行。通过使用反馈线性地区考虑发电机速度和直流链路电压之间的非线性关系。为了在LVRT期间支持电网,DC-Link电压由机器侧转换器(MSC)控制。存储在风力涡轮机惯量中的动能用于补偿较低的电压。此外,俯仰角度控制用于确保稳定操作,并且为了保证转子速度不超过额定值。进行了2MW PMSG风力涡轮机的模拟以验证所提出的控制策略。

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