Capacitor Modeling Methodology for System-level ESD Simulation

2019 ◽  
Author(s):  
Li Xiang ◽  
Xie Xiaofei ◽  
Xia Nan ◽  
Gu Zhengdong
Keyword(s):  
System Level ◽  
Modeling Methodology

scholarly journals Multi-Level Modeling Methodology for Optimal Design of Electric Machines Based on Multi-Disciplinary Design Optimization

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4173
Author(s):  
Zehua Dai ◽  
Li Wang ◽  
Lexuan Meng ◽  
Shanshui Yang ◽  
Ling Mao
Keyword(s):  
Power Systems ◽  
Design Optimization ◽  
Synchronous Generator ◽  
Electric Machines ◽  
Modeling Method ◽  
System Level ◽  
Superior Performance ◽  
Efficient Design ◽  
Modeling Methodology ◽  
Multi Level

The transportation sector is undergoing electrification to gain advantages such as lighter weight, improved reliability, and enhanced efficiency. As contributors to the safety of embedded critical functions in electrified systems, better sizing of electric machines in vehicles is required to reduce the cost, volume, and weight. Although the designs of machines are widely investigated, existing studies are mostly complicated and application-specific. To satisfy the multi-level design requirements of power systems, this study aims to develop an efficient modeling method of electric machines with a background of aircraft applications. A variable-speed variable-frequency (VSVF) electrically excited synchronous generator is selected as a case study to illustrate the modular multi-physics modeling process, in which weight and power loss are the major optimization goals. In addition, multi-disciplinary design optimization (MDO) methods are introduced to facilitate the optimal variable selection and simplified model establishment, which can be used for the system-level overall design. Several cases with industrial data are analyzed to demonstrate the effectiveness and superior performance of the modeling method. The results show that the proposed practices provide designers with accurate, fast, and systematic means to develop models for the efficient design of aircraft power systems.

scholarly journals System Level Modeling Methodology of Application Specific Instruction Set Processor (SIP) Using SystemC

1970 ◽  
Vol 7 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Rana Mukherji ◽  
Manishita Das
Keyword(s):  
System Integration ◽  
Speech Synthesis ◽  
System Level ◽  
Instruction Set ◽  
Specific Instruction ◽  
Modeling Methodology ◽  
Hardware Description ◽  
Natural Solution ◽  
Description Languages ◽  
Application Specific

In recent years, the development of application specific instruction set processors (ASIP) is the exclusive domain of the semiconductor houses and core vendors. This is due to the fact that constructing such architecture is a difficult assignment that needs skilled knowledge in distinct domains: application software development tools, processor hardware implementation, and system integration and verification. To specify the design and implementation of such systems and incorporate the functionality implemented in both hardware and software forms, we are compelled to move on from traditional Hardware Description Languages (HDLs). Since C and C++ are dominant languages used by chip architects, system engineers and software engineers today, we believe that a C++ based approach to hardware modeling is necessary. This will enable codesign, providing a more natural solution to partitioning fuctionality between hardware and software. In this paper, we discuss a design approach of SystemC (a C++ class library) for ASIP at the system-level which provides necessary features for modeling design hierarchy, concurrency and reactivity in hardware. To exemplify and validate the method we employed it to the design of a 32-bit ASIP for Hindi Text-to-Speech Synthesis developed by CEERI, Pilani (INDIA). Keywords: ASIP; System; System Level Design   DOI: http://dx.doi.org/10.3329/diujst.v7i1.9647 Daffodil International University Journal of Science and Technology Vol.7(1) 2012 44-49

scholarly journals Prediction of Conducted Emissions in Satellite Power Buses

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Giordano Spadacini ◽  
Flavia Grassi ◽  
Diego Bellan ◽  
Sergio A. Pignari ◽  
Filippo Marliani
Keyword(s):  
Behavioral Model ◽  
Wide Frequency Range ◽  
System Level ◽  
Power Cables ◽  
Power Conditioning ◽  
Frequency Spectra ◽  
Unit Level ◽  
Modeling Methodology ◽  
Multiconductor Transmission Line ◽  
Conducted Emissions

This work reports a modeling methodology for the prediction of conducted emissions (CE) in a wide frequency range (up to 100 MHz), which are generated by dc/dc converters and propagate along the power buses of satellites. In particular, the dc/dc converter seen as a source of CE is represented by a behavioral model, whose parameters can be identified by two unit-level experimental procedures performed in controlled test setups. A simplified multiconductor transmission-line (MTL) model is developed to account for the propagation of CE in shielded bundles of twisted-wire pairs used as power cables. The whole power system is represented by the interconnection of the circuit models of dc/dc converters, cables, and Power Conditioning and Distribution Unit (PCDU). By solving the obtained network, frequency spectra of CE can be predicted. Experimental results are reported to substantiate the accuracy of the proposed unit-level dc/dc converter model and the MTL model of cables. Finally, a system-level test setup composed of three dc/dc converters connected to a PCDU is considered, and predicted CE are compared versus experimental measurements.

System-Level Modeling of Surface-Immobilized Biomolecular Concentration Gradient Generation

2009 ◽  
Author(s):  
Yi Wang ◽  
Kapil Pant
Keyword(s):  
Concentration Gradient ◽  
System Level ◽  
Reliable System ◽  
Modeling Methodology ◽  
System Level Modeling ◽  
Network Geometry ◽  
Component Interface ◽  
Gradient Generation ◽  
Component Models ◽  
Arbitrary Flow

This paper presents a system-level modeling methodology for microfluidic surface-immobilized biomolecular concentration gradient generators (CGGs). The generator is broken down into a system of elemental microfluidic components with relatively simple geometries and functionality. Parameterized models for such components are developed, which hold for general biomolecular concentration profiles and arbitrary flow ratios at the component interface; hence, they are valid for a broad category of CGGs that rely on various operating mechanisms. The component models are then linked through an appropriate set of parameters at the interfaces to construct a system-level, network representation of the entire generator for simulation. The system model is extensively verified against experimental data reported in the literature. The model results are found to be in excellent agreement, and can be applied to accurately capture the overall effects of network geometry, biomolecular properties, operating parameters (e.g., flow rates and initial biomolecular concentration) on the generation of biomolecular gradients on the surfaces. The model also demonstrates salient computational efficiency (seconds of execution time) and can be used to guide fast, reliable, system-level design of CGGs and associated bioassays.

Enhanced IC Modeling Methodology for System-level ESD Simulation

2018 ◽  
Author(s):  
Jie Xiong ◽  
Zaichen Chen ◽  
Yang Xiu ◽  
Zhen Mu ◽  
Maxim Raginsky ◽  
...  
Keyword(s):  
System Level ◽  
Modeling Methodology
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