scholarly journals Equivalent Circuit Model of Semiconducting Single Walled Carbon Nano Tube based Bulk Hetero Junction Organic Solar Cell in Comparison with Experimental Results

2015 ◽  
Vol 113 (8) ◽  
pp. 4-7
Author(s):  
P. Swapna ◽  
Y. Srinivasa Rao
Keyword(s):  
Solar Cell ◽  
Equivalent Circuit ◽  
Organic Solar Cell ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Experimental Results ◽  
Single Walled Carbon ◽  
Carbon Nano Tube

Evaluation of Organic Thin Film Solar Cells Using 3-Diode Equivalent Circuit Model with Inverted Diode

2012 ◽  
Vol 725 ◽  
pp. 179-182 ◽  
Author(s):  
Yuya Sakurada ◽  
Yasuyuki Ota ◽  
Hiroki Watanabe ◽  
Hideyuki Murata ◽  
Kensuke Nishioka
Keyword(s):  
Heat Treatment ◽  
Solar Cells ◽  
Solar Cell ◽  
Equivalent Circuit ◽  
Organic Solar Cells ◽  
Organic Solar Cell ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Organic Thin Film ◽  
Before And After

We proposed a modified 3-diode equivalent circuit model with an inverted diode for the analysis of the characteristics of bulk hetero junction organic solar cells before and after heat treatment with the reverse bias of -8 V. The dark current density-voltage (J-V) characteristics of the bulk hetero junction organic solar cells before and after heat treatment were measured. From dark J-V characteristics of each organic solar cell, fitting of J-V curve between measured and calculated date was carried out using a modified 3-diode equivalent circuit model with an inverted diode. Using extracted diode parameters, the performances of the bulk hetero junction organic solar cells were compared and evaluated. The measured and calculated J-V characteristics of the bulk hetero junction organic solar cell agreed well, and the organic solar cells were able to be evaluated using the proposed method.

scholarly journals An Improved Organic Solar Cell Lumped-Parameter Equivalent Circuit Model

Crystals ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 277 ◽  
Author(s):  
Chuanzhong Xu ◽  
Fei Yu ◽  
Wei Lin ◽  
Gongyi Huang
Keyword(s):  
Solar Cell ◽  
Equivalent Circuit ◽  
Organic Solar Cell ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Lumped Parameter

scholarly journals Synchronous Machine Winding Modeling Method Based on Broadband Characteristics

2021 ◽  
Vol 11 (10) ◽  
pp. 4631
Author(s):  
Yu Chen ◽  
Xiaoqing Ji ◽  
Zhongyong Zhao
Keyword(s):  
Equivalent Circuit ◽  
High Frequency ◽  
Equivalent Circuit Model ◽  
Black Box ◽  
Synchronous Machine ◽  
Circuit Model ◽  
Modeling Method ◽  
Experimental Results ◽  
Box Model ◽  
Impedance Curve

The accurate establishment of the equivalent circuit model of the synchronous machine windings’ broadband characteristics is the basis for the study of high-frequency machine problems, such as winding fault diagnosis and electromagnetic interference prediction. Therefore, this paper proposes a modeling method for synchronous machine winding based on broadband characteristics. Firstly, the single-phase high-frequency lumped parameter circuit model of synchronous machine winding is introduced, then the broadband characteristics of the port are analyzed by using the state space model, and then the equivalent circuit parameters are identified by using an optimization algorithm combined with the measured broadband impedance characteristics of port. Finally, experimental verification and comparison experiments are carried out on a 5-kW synchronous machine. The experimental results show that the proposed modeling method identifies the impedance curve of the circuit parameters with a high degree of agreement with the measured impedance curve, which indicates that the modeling method is feasible. In addition, the comparative experimental results show that, compared with the engineering exploratory calculation method, the proposed parameter identification method has stronger adaptability to the measured data and a certain robustness. Compared with the black box model, the parameters of the proposed model have a certain physical meaning, and the agreement with the actual impedance characteristic curve is higher than that of the black box model.

scholarly journals A review of diode and solar cell equivalent circuit model lumped parameter extraction procedures

2014 ◽  
Vol 27 (1) ◽  
pp. 57-102 ◽  
Author(s):  
Adelmo Ortiz-Conde ◽  
Francisco García-Sánchez ◽  
Juan Muci ◽  
Andrea Sucre-González
Keyword(s):  
Solar Cell ◽  
Equivalent Circuit ◽  
Cell Model ◽  
Equivalent Circuit Model ◽  
Parameter Extraction ◽  
Circuit Model ◽  
Model Parameters ◽  
Lumped Parameter ◽  
Double Exponential ◽  
The Given

This article presents an up-to-date review of several methods used for extraction of diode and solar cell model parameters. In order to facilitate the choice of the most appropriate method for the given particular application, the methods are classified according to their lumped parameter equivalent circuit model: single-exponential, double-exponential, multiple-exponential, with and without series and parallel resistances. In general, methods based on numerical integration or optimization are recommended to reduce the possible uncertainties arising from measurement noise.

A Switched-Capacitor AC-AC Converter for 220V/55V and 55V/220V Applications

2013 ◽  
Vol 427-429 ◽  
pp. 730-733
Author(s):  
Zhong Ge Wang ◽  
Wei Wang ◽  
Cai Hui
Keyword(s):  
Theoretical Analysis ◽  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Experimental Results ◽  
Switching Frequency ◽  
Switched Capacitor ◽  
Circuit Topology ◽  
High Side ◽  
Switched Capacitor Converter

A novel type AC-AC converter based on the switched-capacitor principle is presented. The circuit topology of the switched-capacitor converter, the principle of operation, the equivalent circuit model and an example are described in this paper. In order to demonstrate the performance of this converter in the laboratory, this paper designs a prototype of 600W, 220V high-side voltage, 55V low-side voltage and switching frequency of 50 kHz. The experimental results verify the validity of the theoretical analysis.

scholarly journals Equivalent Circuit Modeling for a Valveless Piezoelectric Pump

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2881 ◽  
Author(s):  
Jianhui Zhang ◽  
Yuan Wang ◽  
Jun Huang
Keyword(s):  
Equivalent Circuit ◽  
Flow Rate ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Experimental Results ◽  
Driving Voltage ◽  
Piezoelectric Pump ◽  
Pump System ◽  
Field Problem ◽  
Valveless Piezoelectric Pump

Various kinds of the models had been proposed to explain the relationship between the performance and the structural parameters of valveless piezoelectric pumps, so as to evaluate the functional performance such devices. Among the models, the equivalent circuit model, which converts the multi-field problem of a valveless piezoelectric pump system into a simple circuit problem, is the most simple and clear one. Therefore, the proposed structure and working principle of the valveless piezoelectric pump with multistage Y-shape treelike bifurcate tubes are analyzed; then, the equivalent circuit model of the valveless piezoelectric pump is established based on the working principles of this pump and liquid-electric analogy theory. Finally, an experimental study of the pump is carried out, with a comparative analysis of the experimental results and the simulation results of the generated equivalent circuit. The experimental results show that with a driving voltage of 100 V and frequency of 6 Hz, the maximum flow rate of the valveless piezoelectric pump is 1.16 mL/min. Meanwhile, the output current of equivalent circuit also reaches its peak at the frequency of 6 Hz, therefore, indicating a good predictive ability of this model in calculating the maximum output flow rate and best working frequency of valveless piezoelectric pumps.

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