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Study on photovoltaic power system using orthogonal-core type dc-ac converter

采用正交铁心型DC-AC变换器的光伏发电系统研究

基本信息

批准号：
05555080
负责人：
ICHINOKURA Osamu
金额：
$ 5.95万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555080/
关键词：
Photovoltaic power system DC-AC converter Orthogonal-core Nonlinear magnetics

项目摘要

The purpose of this research is development of the orthogonal-core type dc-ac converter, which is proposed by the author, applicable to practical photovoltaic power system. The results obtained by the study in the time of two years are as follows :1.Development of solar cell simulator : The simulator is constructed with a variable dc-power-supply and diode array. The I-V curves of the trial simulator for the various solar radiation show good agreement with the actual solar cell array.2.Considerations on basic operation of orthogonal-core type dc-ac converter : Using the orthogonal-core type dc-ac converter with small capacity of 400 W,the authors clarify the basic operation of the converter. The simulated and experimental results indicate that the converter has some desirable features for a residential photovoltaic power system.3.Optimum design of the dc-ac converter : The authors present a method for optimum design of the converter. In particular, the authors propose a new analysis method based on a three-dimensional magnetic circuit model of the orthogonal-core. The results are useful for improvement of the dc-ac converter.4.Development of actual dc-ac converter : Based on the above results, the authors made a 3 kW orthogonal-core type dc-ac converter. The efficiency of the trial converter is 90 %. The converter can receive practical application.5.Development of a new applications : In this research, the authors considered new applications of the orthogonal-core. One application is a new variable inductor with sinusoidal output and high speed operation using the orthogonal-core. The variable inductor is useful for a VAR compensator with high performances.The orthogonal-core type dc-ac converter presented here is useful for residential photovoltaic power system because of the converter has desirable features which include simple construction, easiness of maintenance and excellent fault tolerance.

本研究之目的在于研制一种适用于实际光伏发电系统之正交铁芯式直流-交流转换器。1.太阳能电池模拟器的研制：采用可变直流电源和二极管阵列构成太阳能电池模拟器。试验模拟器在不同太阳辐射下的I-V曲线与实际太阳能电池阵列的I-V曲线吻合较好。2.正交芯型DC-AC变换器基本工作的考虑：以400 W小容量正交芯型DC-AC变换器为例，阐明了变换器的基本工作原理。仿真和实验结果表明，该变换器具有适合于住宅光伏发电系统的性能。3. DC-AC变换器的优化设计：提出了一种DC-AC变换器的优化设计方法。特别是，作者提出了一种新的分析方法的基础上的三维磁路模型的正交芯。4.实际DC-AC变换器的研制：在上述研究的基础上，研制了一台3 kW正交磁芯型DC-AC变换器。试验转换器的转换效率为90%。新应用的开发：在本研究中，作者考虑了正交核的新应用。一个应用是一种新的可变电感器，具有正弦输出和高速操作使用的正交核心。可变电感可用于高性能的无功补偿器，本文提出的正交磁芯型DC-AC变换器具有结构简单、易于维护和良好的容错性等优点，可用于住宅光伏发电系统。