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Behavioral models of semiconductor devices have been widely implemented in simulation tools because they have simple structures and easy parameter extraction procedures. However, the IGBT behavioral model is more complicated than that of the MOSFET because the BJT structure exhibits charge storage phenomenon, such as the tail current. In this paper, a simple IGBT behavioral model with easy parameter...
The electrical characteristics of InP/In0.24Ga0.76As0.73Sb0.27/In0.53Ga0.47As double heterojunction bipolar transistor (DHBT) are investigated. The study is based on energy balance (EB) transport model and TCAD SILVACO device simulator. InP/In0.24Ga0.76As0.73Sb0.27 DHBT have a low Emitter-Base conduction band discontinuity ΔEC and a minimum base bandgap energy EG among the entire composition range...
Network lifetime and coverage are viewed as the dominating considerations in designing the structure layout for Wireless Sensor Networks (WSN). In a WSN, the sensor nodes and its central node are located far apart to ensure good coverage over the concerning area. However, communication over long distance between the nodes consumes excessive energy from the battery powered sensors and reduces the lifetime...
In order to analyze the difference between two kinds of engineering software-Matlab and LabVIEW in dealing with the issue of non-linear curve fitting, we study the implementation methods in the two kinds of software separately, without combining them. In Matlab the curve fitting toolbox is used to analyze the data, while in LabVIEW we use the “nonlinear curve fit” and “curve fitting” two kinds of...
In this paper, a novel SRM dead-beat torque control strategy is proposed to solve the inherent disadvantage of torque ripple associated with the conventional control. Based on the SRM mathematical model, the strategy analyzes the relations between the torque deviation and the output voltage, and calculates the optimal resultant voltage which could compensate the torque error exactly in one sampling...
This paper presents the analyzed results of an integration of an offshore wind farm (OWF) and a seashore wave farm (WAF) connected to an onshore large power grid using a flywheel energy storage system (FESS) to simultaneously achieve power-fluctuation mitigation and dynamic-stability enhancement. The performance of the studied OWF is simulated by an equivalent aggregated 80-MW doubly-fed induction...
This paper presents the analyzed results of an integrated offshore wind farm (OWF) and seashore wave farm (WAF) connected to an onshore large power grid through a variable frequency transformer (VFT) to simultaneously achieve power-fluctuation mitigation and stability enhancement. The performance of the studied OWF is simulated by an equivalent aggregated 80-MW doubly-fed induction generator (DFIG)...
This paper presents the analyzed results of an integrated offshore wind farm (OWF) and seashore wave farm (WAF) connected to an onshore large power grid through a high-voltage direct current (HVDC) link to simultaneously achieve power-fluctuation mitigation and dynamic-stability enhancement. The performance of the studied OWF is simulated by an equivalent aggregated 80-MW doubly-fed induction generator...
An approach to classifying Web customers for developing personalized Web services is presented. The main objective of the proposed approach is to effectively distinguish a potential customer for the purpose of planning customized e-marketing. The proposed approach can be divided into four steps: determine a customer's general interest model, ascertain a customer's local browsing model, classify Web...
A multi-agent based automatic Web recommendation model is presented. The main objective of this work is to provide Web users with an autonomous navigating model that is able to relieve Web users from repetitive and tedious Web surfing. The proposed approach classifies Web pages through calculating weights of terms. A user's interest model and preference model are generated by analyzing the user's...
An approach to model and quantify a userpsilas Web search interests using the userpsilas navigational data is presented. The approach is based on the premise that frequently visiting certain types of content indicates that the user is interested in that content. The proposed approach can be divided into three steps: monitoring the userpsilas navigational data; using the cumulative weight to determine...
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