Study on SRG for Wind Turbine Generation

开关磁阻电动机具有结构简单、坚固、维修方便、成本低、转动惯量小等优点。这些特性对于SRM应用于发电机（SRG），如高速发电机或低速多极发电机是理想的。本研究的目的是阐明SRG的基本工作特性，并考虑SRG在风力发电中的应用。所得结果如下：(1)SRG的试制。制作了200w的SRG样机及其激励电路。在实验的基础上，明确了其基本工作特性。SRG的工作特性取决于SRG定子绕组励磁电压的相角和脉宽等励磁条件。(2)SRG仿真新方法的建立。SRG的工作特性很大程度上取决于励磁条件，因此优化设计是一个难点。在本研究中，作者提出了一种新的计算方法。在计算中，SRG采用变磁阻模型。将变磁阻、励磁电路、控制电路与合适的电路相结合，可以计算出SRG的动态工作特性。计算结果与实验结果吻合较好。本文的仿真方法对SRG的优化设计具有指导意义。(3) SRG在风力发电中的应用。通过仿真和简单实验，探讨了SRG在风力发电中的应用。结果表明，SRG是一种理想的变速风力发电机组。

A switched reluctance motor (SRM) has simple and strong structure, easiness of maintenance, low cost and small moment of inertia. The features are desirable for the application of SRM to a generator (SRG) such as high speed generator or low speed multipolar generator. The purpose of this research was to clarify fundamental operating characteristic of SRG and to consider the application of SRG to wind turbine generation. The obtained results are as follows:(1) Trial construction of SRG. The author made a 200 W prototype SRG and its exciting circuit. Based on the experiments, the author clarified the fundamental operating characteristics. The operating characteristics of SRG depend on of the exciting conditions such as the phase angle and pulse width of the exciting voltages of the stator windings of SRG(2) Development of a new simulation method of SRG. The optimum design of SRG is difficult because its operating characteristics depend heavily on exciting conditions. In this research, the author proposed a new calculation method. In the calculation, SRG is modeled by a variable reluctance. By combining the variable reluctance, exciting circuit, control circuit with a suitable circuit, we can calculate the dynamic operating characteristics of SRG. The calculated results agree well with the experimental ones. The simulation method presented here is useful for optimum design of SRG.(3) Application of SRG to wind turbine generation. The author examined the application of SRG to wind turbine generation based on the simulation and simple experiments. The obtained results indicate that SRG is expected as a variable speed wind turbine generator.