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DEVELOPMENT OF INTERIOR PERMANENT MAGNET LINEAR SYNCHRONOUS GENERATOR THAT CAN CONVERT FROM WAVE POWER WITH HIGH EFFICIENCY.

开发可将波浪能高效转换的内置式永磁线性同步发电机。

基本信息

批准号：
16560249
负责人：
SANADA Masayuki
金额：
$ 2.18万
依托单位：
Osaka Prefecture University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

The aim of this research is development of the linear generator to achieve a highly effective wave activated power generation system, which doesn't need low efficiency air conversion equipment such as conventional system. The system complexity and expensiveness to disturb the practical use of the wave power generation system is caused because the rotation generator that has the characteristic that becomes high efficiency at high speed operation is driven by the slow reciprocated motion.In this research, various characteristics were examined to develop the linear generator that has the most effective structure. PM type linear synchronous generator (PM-LSG), hybrid type linear stepping generator (HB-LSTG), and high density type linear stepping generator (HD-LSTG) were examined. It is necessary to give the waterproof molding in the linear generator for the wave power generation. An enough induced voltage is obtained even by the gap length of 1mm or more in the PM-LSG. The LSTG type cannot show the performance enough. Moreover, it was clarified that there is optimum point of the maximum efficiency in the pole pitch about 24mm. Electrical energy that can be taken out of the wave is estimated roughly with about 1kW/m. If the generator is made multilayered structure, it has been understood that there is a possibility that the wave energy of 7kW/m can be collected at the high rate.The buried structure PM-LSG became about 10% high power from the surface mounted PM-LSG in the amount of the same magnet. Because the generator has reverse-saliency in the buried structure, the output and the efficiency of the generator are thought to be ameliorable further by the optimal current vector regulation with the converter.

本研究的目的是开发线性发电机，以实现高效的波浪发电系统，它不需要低效率的空气转换设备，如传统的系统。具有高速运转时效率高的特性的旋转发电机是由缓慢的往复运动驱动的，因此，系统的复杂性和昂贵性妨碍了波浪发电系统的实际使用。本研究中，为了开发具有最有效结构的线性发电机，对各种特性进行了研究。研究了永磁型直线同步发电机（PM-LSG）、混合型直线步进发电机（HB-LSTG）和高密度型直线步进发电机（HD-LSTG）。波浪能发电的直线发电机需要进行防水成型。即使在PM-LSG中的差距长度为1 mm或更大，也可以获得足够的感应电压。LSTG类型无法充分显示性能。此外，还阐明了在24 mm左右的极距处存在最大效率的最佳点。可以从波浪中获取的电能粗略估计约为1 kW/m。如果发电机制成多层结构，可以理解的是，有可能以高速率收集7 kW/m2的波能。埋入式结构PM-LSG在相同磁体的量下比表面安装的PM-LSG高出约10%的功率。由于发电机在埋地结构中具有反凸极特性，通过变换器的最优电流矢量调节，可以进一步改善发电机的输出和效率。