成果報告書詳細
管理番号20120000001187
タイトル*平成21年度~平成22年度のうち平成21年度分中間年報 開発項目「新エネルギー技術研究開発/新エネルギーベンチャー技術革新事業(太陽光発電)/太陽電池アレイ故障診断技術の開発」
公開日2012/12/4
報告書年度2009-2009
委託先名株式会社システム・ジェイディー 阪和電子工業株式会社 独立行政法人産業技術総合研究所
プロジェクト番号P10020
部署名技術開発推進部
和文要約和文要約等以下本編抜粋:
1. 研究開発の内容及び成果等
<目的>
化石燃料代替エネルギーとして、またCO2 削減の観点からも、自然エネルギーの活用が要望されている。その中でも、太陽光は、無尽蔵のエネルギーであり、太陽光をエネルギーに変換する技術も確立している。
英文要約TiTle: New Energy Technology Research Development / New Energy Venture Business Technology Innovation Program (Photovoltaic Power Generation) Development of Fault Diagnosis Systems for Photovoltaic Array
(FY2009-FY2010) FY2009 Annual Report
1. Development of prototype for a fault diagnosis system Analyzing the circuit and the elements of photovoltaic (PV) modules, we have developed the simulation model of PV modules that expressed AC specification of a PV module in SPICE. As a result, the reflection waveform in the simulation model accorded with the waveform in actual PV modules.
Next we defined the PV module model and PV array model that increased series resistance as a fault model of deterioration of the power. As a result, we confirmed to accord the waveform of simulation with the actual waveform at error by less than 10%.
Moreover we developed the algorithm of finding fault position in PV string based on differential calculus of reflection waveform. As a result, we verified that the algorithm can identify the fault PV module with precision of less than one module.
In addition, we developed the model that the amplitude of the reflection wave pattern could simulate and the algorithm to estimate a level of the deterioration in any position of fault.
2. Prototype development of the fault deterioration sensing device We designed the variable pulse generator changed the voltage or pulse width into and the wave pattern observation device to observe a reflection waveform. And I measured whether it was found resistance 10Ω which there was in PV string. As a result, we established a method to detect a fault location with resistance value of 10Ω with precision within one piece of module in PV string.
Next we made the prototype of the fault deterioration sensing device which we added the fault diagnosis function of the PV module to with an existing device. As a result, we extracted the specifications of the product from the characteristic of a necessary output waveform and input waveform, so that we put up the prospect that could develop the device which was light weight / a compact / low cost.
3. Performance evaluation in the bench model We has measured the signal propagation velocity in PV module string under TDR, and estimated the transfer line length to the fault position in the PV string. The signal propagation velocity was estimated as 2.7x10^8[m/s] in the multi-crystalline Si modules. Based on the velocity, the transfer line length to the fault position in the string was estimated, and the line length was converted to the module number. The error from the estimated module number to the actual faulty module number in the string was about 0.6 modules.
4. Business plan
As for the business plan for PV fault detection system, some interviews to PV module manufacture makers and PV measurement equipment manufacture makers were done. Those interviews clarified the needs of the system for the maintenance, required specifications for the system, and the price target of the system. We arranged the product outline, price, market demands, market size, problems on business and profit-and-loss and then drew up our business plan.
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