風車の制御器に関する基礎的事項について

概要

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We theoretically and experimentally study on basic ideas to control a wind turbine by power electronic devices. We assume that the aerodynamic properties of a blade are given by a torque coefficient, which is a function of a tip speed ratio only. We assume that a multi-pole synchronous generator can be expressed by an interior resistance, an inductance, the rate of induced voltage and the number of waves per unit rotation, and a controller consists of a rectifier and a variable resistance. Experimental results show that the behavior of a generator can be described well by the four electrical constants. To control the rotational speed of a turbine, the value of the resistance must be adjusted properly. We derive formulas for the value of the resistance for optimum control as a function of the four electrical constants and the output power of the turbine.
2010-03-00