Through theoretical analyses of the Shockley equation and the difference between a practical P-N junction and its ideal model, the mathematical models of P-N junction and solar cells had been obtained. With Matlab sof...Through theoretical analyses of the Shockley equation and the difference between a practical P-N junction and its ideal model, the mathematical models of P-N junction and solar cells had been obtained. With Matlab software, the V-I characteristics of diodes and solar cells were simulated, and a computer simulation model of the solar cells based on P-N junction was also established. Based on the simulation model, the influences of solar cell’s internal resistances on open-circuit voltage and short-circuit current under certain illumination were numerically analyzed and solved. The simulation results showed that the equivalent series resistance and shunt resistance could strongly affect the V-I characteristics of solar cell, but their influence styles were different.展开更多
In this paper, the authors first construct a dynamical system which is strongly mixing but has no weak specification property. Then the authors introduce two new concepts which are called the quasi-weak specification ...In this paper, the authors first construct a dynamical system which is strongly mixing but has no weak specification property. Then the authors introduce two new concepts which are called the quasi-weak specification property and the semi-weak specification property in this paper, respectively, and the authors prove the equivalence of quasi-weak specification property, semi-weak specification property and strongly mixing.展开更多
In this paper we study properties of the secondary Hochschild homology of the triple （A, B, ε） with coefficients in M. We establish a type of Morita equivalence between two triples and show that H.（（A,B,ε）; M）...In this paper we study properties of the secondary Hochschild homology of the triple （A, B, ε） with coefficients in M. We establish a type of Morita equivalence between two triples and show that H.（（A,B,ε）; M） is invariant under this equivalence. We also prove the existence of an exact sequence which connects the usual and the secondary Hochschild homologies in low dimension~ allowing one to perform easy computations. The functoriality of H.（（A, B, ε）; M） is also discussed.展开更多
文摘Through theoretical analyses of the Shockley equation and the difference between a practical P-N junction and its ideal model, the mathematical models of P-N junction and solar cells had been obtained. With Matlab software, the V-I characteristics of diodes and solar cells were simulated, and a computer simulation model of the solar cells based on P-N junction was also established. Based on the simulation model, the influences of solar cell’s internal resistances on open-circuit voltage and short-circuit current under certain illumination were numerically analyzed and solved. The simulation results showed that the equivalent series resistance and shunt resistance could strongly affect the V-I characteristics of solar cell, but their influence styles were different.
基金supported by the National Natural Science Foundation of China(Nos.11261039,11661054)the Jiangxi Provincial Natural Science Foundation of China(No.20132BAB201009)the Visiting Scholar Special Funds of Development Program for Middle-aged and Young Teachers in Ordinary Undergraduate Colleges and Universities of Jiangxi Province
文摘In this paper, the authors first construct a dynamical system which is strongly mixing but has no weak specification property. Then the authors introduce two new concepts which are called the quasi-weak specification property and the semi-weak specification property in this paper, respectively, and the authors prove the equivalence of quasi-weak specification property, semi-weak specification property and strongly mixing.
文摘In this paper we study properties of the secondary Hochschild homology of the triple （A, B, ε） with coefficients in M. We establish a type of Morita equivalence between two triples and show that H.（（A,B,ε）; M） is invariant under this equivalence. We also prove the existence of an exact sequence which connects the usual and the secondary Hochschild homologies in low dimension~ allowing one to perform easy computations. The functoriality of H.（（A, B, ε）; M） is also discussed.
