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When bypass circuit of the PV module is opened and some solar cells are covered by a partial shadow, it is possible that the cells become hot spot by a reverse voltage. Moreover, the current detection methods have some problems that we have to measure the modules one by one, or the open position can't be identified in the string. The purpose of this research is to develop the detection technology...
Utilization of renewable energy such as photovoltaic power generation and wind power generation is useful to reduce the transport volume of fuel Showa Base in the Antarctica from Japan. However, when a lot of renewable energy systems are connected to the small electric system of the Showa Base, it is possible that the frequency of electric system of Showa Base is not stable. Though the use of battery...
We examine and quantify the influence of output difference in photovoltaic (PV) modules in a PV array on safety for standardization on interchangeability of PV modules. First, we modeled I-V characteristics of thin film PV module and maximum power point tracking operation of power conditioning system. Based on the experimental data, we verified validity on the modelling. Then, we simulated reverse...
Objective: It is well known that patients with brainstem infarctions sometimes experience dizziness, vertigo and falls, although the exact mechanism is not clear. Therefore, we designed a study to quantify autonomic function in patients with brainstem infarction. Patients and methods: We examined autonomic function in 15 patients with brainstem infarctions, who had a history of vertigo, nausea, floating...
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