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The precise integration method is a semi analytical solution method of partial differential equation method. Based on the precise integration method, the lossy transmission line transient response analysis method is a time domain analysis method. The lossy transmission line transient response analysis method can easily deal with the transmission line problems, which is difficult for the nonzero initial...
In this paper, a novel comprehensive transmitter architecture has been proposed, which enables the concurrent transmission of two separate frequency bands by carrier aggregation. For different frequencies, the proposed transmitter can simultaneously employ 1-bit Low-pass and Band-pass delta-sigma modulators structures, or employ hybrid structures. Carrier frequencies are equal to oversampling frequencies...
With a large number of distributed generations' access, the impact of distributed generations to the grids ' security and stability can not be ignored. The microgrid is a good solution to the access. This paper builds the asynchronous wind turbine and the microgrid model based on Matlab/Simulink simulation platform.The port characteristics of the asynchronous wind turbine is given. Finally, a storage...
With the increase of wind power propotion, votage stability issues of wind power must be researched. After establishing the mathematical model of the doubly fed induction generator, combined with the practical mathematical model of zhanjiang in guangdong province,the influnce on static voltage stability of system connected with wind power was simulated and researched. The results show that grid integration...
This paper investigates the state feedback stabilization of linear time-invariant (LTI) systems with input time delay. By investigating the real part and the imaginary part of the transcendental equation, the characteristic equation can be transformed into an equation with two bivectors related to the system parameters and the feedback gain. Using the bivector rotation principle, the characteristic...
The V-detector generation algorithm is a kind of negative selection algorithm (NSA) inspired by biological immune system (BIS). In this paper, V-detector generation algorithm is simply introduced. The problem that V-detector generation algorithm can not meet the change of parameters in significant level is also pointed out. This problem will cause instable algorithm performance. In the meantime, it...
The solid state transformer (SST) is one of the key elements proposed in the National Science Foundation (NSF) Generation-III Engineering Research Center (ERC) ldquoFuture Renewable Electric Energy Delivery and Managementrdquo (FREEDM) Systems Center established in 2008. The SST is used to enable active management of distributed renewable energy resources, energy storage devices and loads. In this...
This study focused on the characteristics of the removal of ammonia nitrogen in wastewater with spent grains, a by-product of the brewing process. The influences of density of NaCl solution, pH, contact time and initial ammonia concentration were investigated in batch experiments. The largest removal was obtained at pH 8 in 30 min by 20 g/L spent grains modified by 5% NaCl solution when the initial...
The human immune system consists of a complex set of cells and molecules that protect organs against infection. With many different kinds of lymphocytes (B cell, T cell and so on) distributing all over the human body, the human immune system can distinguish nonself from self and then eliminate nonself immediately. According to the principles of human immune system, a novel immunity-based anomaly detection...
According to the relationship between the antibody density and the pathogen attack intensity, a dynamic immunity-based real-time network risk evaluation method (DIRNR) is presented. In DIRNR, the concepts and formal definitions of self, nonself, antibody, antigen and immune detector in network risk evaluation domain are given. Then, depending on a series of immune responses to antigen, such as self...
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