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In this paper an electronic load suitable for the PV module I-V characteristic curve fast detection is presented. This device is designed in agreement with the IEC 82 Techinical Committee Standard since it allows the detection of the characteristic starting from voltage values even lower than 3% of the PV module open circuit voltage. The device main features are short time characteristc detection...
In this paper, an improved two diode model of photovoltaic module is simulated using MATLAB/ Simulink. Only four parameters(Voc, Isc, Vm, Im) are required to simulate the model. Accuracy of the model is validated by testing various modules of different types (Multi Crystalline, Mono Crystalline and Thin Film). The proposed model is found to be accurate when subjected to variation in temperature and...
Contraposing the shortcomings of natural sampling method that has to solve complex transcendental equation and is difficult to achieve real-time control, this paper presents a method that using binary search to solve SPWM switching points based on natural sampling method. This improved algorithm is programmed using C language and simulated in MATLAB environment by C-MEX file. The result confirms its...
In this paper we present a toolbox enabling easy evaluation and comparison of different filtering algorithms. The toolbox is called Kalmtool 4 and is a set of MATLAB tools for state estimation of nonlinear systems. The toolbox contains functions for extended Kalman filtering as well as for DD1 filter and the DD2 filter. It also contains functions for Unscented Kalman filters as well as several versions...
A new simulation model of photovoltaic module is presented in this paper, which is based on double-exponential equation. The proposed model accepts irradiance and temperature as variable parameters, can exactly simulate the current-voltage (I/V) characteristic of photovoltaic module. And a MatlabTM program for the model is also designed. The program is more accurate and need less initial input values...
By the investigation to the characteristics of pedestrians flow on stairways in some main pedestrians distributing centers, such as the Shanghai Chifeng Road Light Orbit Station, Shanghai People's Square Subway Station and the Shanghai train station and so on, and on the basis of the investigation data above, the fundamental characteristics of pedestrians flow in transfer station are found by qualitative...
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