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Novel Speed Increaser Used in Counter-Rotating Wind Turbines

机译:用于反向旋转风力涡轮机的新型速度增加

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The speed increasers are typical components of a large diversity of renewable energy systems (RES), like wind turbines or hydropower plants, used to harmonize the low input speed of wind rotor/hydro turbine with the higher speed requirement of the electric generator. The counter-rotating turbines are able to generate more electricity in comparison with the classical systems with one input due to the summation of the two independent input speeds and implicitly of two power flows, but they have a relatively complex control for matching the generator requirements. This drawback can be mitigated by using 1 degree of freedom (DOF) speed increasers with more inputs and one output. The paper deals with the kinematic and static analysis of a novel 1DOF planetary transmission, with two inputs and one output, used as speed increaser in wind/hydro RES. Starting from its property of summing two external torques and the speed amplification ratio imposed on the main power flow, the transmitting functions of speeds and torques, considering gear friction, as well as the mechanism efficiency are established in the paper. A dimensionless parameter k, defined as ratio of the input torques, is introduced and, based on numerical simulations, the transmission behaviour is highlighted. The results allow the formulation of useful recommendations for optimal design of planetary transmissions implemented in RES.
机译:速度更高的是典型的可再生能源系统(RES),如风涡轮机或水电站,用于协调风转子/水轮机的低输入速度,具有电发电机的较高速度要求。反向旋转涡轮机能够与具有一个输入的经典系统相比能够产生更多的电力,这是由于两个独立输入速度的求和和两个功率流的隐式,但它们具有用于匹配发电机要求的相对复杂的控制。可以通过使用具有更多输入和一个输出的1度自由度(DOF)速度增加来减轻该缺点。本文涉及新型1DOF行星传输的运动和静态分析,其中两个输入和一个输出,用作风/水电res的速度更高。从其求和两个外部扭矩的性能开始,纸张摩擦的速度和扭矩的传输功能以及机构效率建立。根据数值模拟引入了定义为输入扭矩的比率的无量纲参数k,并且基于数值模拟,突出显示传输行为。结果允许制定用于在RE中实施的行星传输的最佳设计的有用建议。

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