Huang J.,Huazhong University of Science and Technology |
Shi H.,Wuhan Textile University
IEEE Transactions on Power Electronics | Year: 2014
High common-mode voltage (CMV) of an output will be produced in the conventional sinusoidal pulse width modulation three-phase inverter. Although the carrier phase-shift method can be used to reduce the peaks of CMV, it has the best suppression effect only when the SPWM modulation index is no more than 2/3. This letter presents a new scheme of carrier peak position modulation to break the limitation of modulation index. In this scheme, the peak positions of the triangular carriers are delayed or advanced to avoid the zero state. Thus, the peaks of CMV will be reduced under any modulation index. The feasibility and validity of this scheme are verified through the experiments. © 1986-2012 IEEE.
Wan L.,Wuhan Textile University |
Zhou Q.,Zhaoqing University
Nonlinear Analysis: Real World Applications | Year: 2011
This paper investigates the attractor and ultimate boundedness for stochastic cellular neural networks with delays. By employing the Lyapunov method and a Lasalle-type theorem, novel results and sufficient criteria on the attractor and ultimate boundedness are obtained. © 2011 Elsevier Ltd. All rights reserved.
Wang B.,Wuhan Textile University |
Wang K.,Fuzhou University
Bioresource Technology | Year: 2013
A continuous batch bioleaching was built to realize the bioleaching of sewage sludge in large scale. In the treatment, heavy metal in acid wastewater of bioleaching was removed by adsorption onto ramie residue. Then, acid wastewater was reused in next bioleaching batch. In this way, most time and water of bioleaching was saved and leaching efficiency of copper, lead and chromium kept at a high level in continuous batch bioleaching. It was found that residual heavy metal in sewage sludge is highly related to that in acid wastewater after bioleaching. To get a high leaching efficiency, concentration of heavy metal in acid wastewater should be low. Adsorption of copper from acid wastewater onto ramie residue can be described by pseudo first-order kinetics equation and Freundlich isotherm model. Trichoderma viride has the potential to be used for the concentration and recovery of heavy metal adsorbed onto ramie residue. © 2013 Elsevier Ltd.
Peng J.-J.,Guizhou Normal University |
Peng J.-J.,Wuhan Textile University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2016
We derive the off-shell Noether current and potential in the context of Horndeski theory, which is the most general scalar-tensor theory with a Lagrangian containing derivatives up to second order while yielding at most to second-order equations of motion in four dimensions. Then the formulation of conserved charges is proposed on basis of the off-shell Noether potential and the surface term got from the variation of the Lagrangian. As an application, we calculate the conserved charges of black holes in a scalar-tensor theory with non-minimal coupling between derivatives of the scalar field and the Einstein tensor. © 2015 The Author.
Jin D.,Wuhan Textile University
International Journal of Digital Content Technology and its Applications | Year: 2012
Electronic commerce which had researched 7.0 trillion's market scale in china by the end of 2011 has become one of the most important models of modern business, greatly promoting commercial activities. Internet of Things (IoT) in which wireless network of uniquely identifiable objects was used for the Internet has extended into our daily lives. So far there have already lots of works on the related subjects. And lots of researches about the applications of ToT, also some papers engaged in the application of IoT in E-commerce. But almost all of the works either focused on the two different subjects respectively, or only touched on the application of the later in the former, in this paper we made some researches of the application in details from the points of business models and technologies related, also we discussed about some related questions such as "Privacy and Security Issues" that was needed to deal with in the future.