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We report on a physics-based suite of machine-learning algorithms which performs online, real-time photovoltaic-array incipient hot-spot diagnostics and prognostics, using as input panel-string electrical sensor data. These data consist of module-string currents and voltages and their instantaneous (filtered) rates of change, acquired via a combination of analog and digital sensors. Our diagnostics...
Performances of the typical Maximum Power Point Trackers (MPPTs) are compared and analyzed based on the simulation results. In the simulation, whole current-voltage (I-V) characteristics are calculated by 0.01 [s] to realize the stepped I-V characteristics affected by a partial shadow. In the previous research, the temperature variation was not taken into consideration. In this study, two cases, with...
We have measured temperature distribution using the infrared optical fibers during radiofrequency ablation (RFA). Infrared radiations generated from the water around inserted single-shaft plain electrode are transferred by the three silver halide optical fibers and are measured by a thermopile sensor array. Also, the output voltages of the thermopile sensor array are compared with those of the thermocouple...
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