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Browsing 09 Engineering by Title

Now showing items 1674-1693 of 2363

The Peak Factor of a 16-QAM/OFDM System

Flores-Centurion, Bruno (2007-03-12)

The close relationship between the peak factor of a QPSK/OFDM system and the one from a 16-QAM/OFDM system is presented and analyzed. It is shown that a 16-QAM/OFDM system shows larger peaks and is more difficult to analyze ...
Peak minerals: mapping sustainability issues at local and national scales

Giurco Damien; Prior Timothy; Mason Leah; Mudd Gavin (The New Zealand Society for Sustainability Engineering and Science, 2010)

Peak minerals adopts the Hubbert metaphor for peak oil to highlight issues associated with initial mining of `cheaper, more accessible and higher quality ores¿ pre-peak, to `lower grade, more remote, complex and expensive ...
A PEMFC/Battery Hybrid UPS System for Backup and Emergency Power Applications

Zhan Yuedong; Zhu Jianguo; Guo Youguang; Wang Hua (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2007)

This paper presents the development of a proton exchange membrane fuel cell (PEMFC) and battery hybrid uninterruptible power system (UPS) for backup and emergency power applications. A sixty-cell PEMFC stack is employed ...
Performance Analysis and Evaluation of Proton Membrane Exchange Fuel Cells

Zhan Yuedong; Zhu Jianguo; Guo Youguang; Wang Hua (University of New South Wales, 2008)
Performance Analysis of a Chaos-Based Multi-User Communication System Implemented in DSP Technology

Simic, Ljiljana.; Berber, Stevan M. (2007-03-12)

This paper presents the implementation of a multi-user chaos-based communication system in DSP. The system is based on the chaotic phase shift keying (CPSK) digital modulation scheme, where chaotic signals are used as the ...
Performance Analysis of a Claw Pole PM Motor

Guo Youguang; Zhu Jianguo; Chen Jiaxin; Su Steven; Lu Hai Yan; Jin Jianxun (University of New South Wales, 2008)

This paper presents the performance analysis of a three-phase three-stack permanent magnet (PM) claw pole motor by using an improved phase variable model, which has been developed for accurate and efficient performance ...
Performance Analysis of a Linear Synchronous Motor with HTS Bulk Magnets

Guo Youguang; Jin Jianxun; Zhu Jianguo; Lu Hai Yan; Xu Wei (IEEE, 2010)

The study on high temperature superconducting (HTS) bulk magnets and their application has attracted much attention. This paper presents the performance analysis of a linear synchronous motor (LSM) with HTS bulk magnets ...
Performance Analysis of an SMC Transverse Flux Motor with Modified Double-sided Stator and PM Flux Concentrating Rotor

Zhu Jianguo; Lu Hai Yan; Guo Youguang; Wang Shuhong; Jin Jianxun (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2007)

This paper presents the design and performance analysis of a three-phase three-stack transverse flux motor with a modified double-sided stator and a permanent magnet (PM) flux concentrating rotor. Both stator and rotor ...
Performance Analysis of a Permanent Magnet Claw Pole SMC Motor with Brushless DC Control Scheme

Guo Youguang; Zhu Jianguo; Chen Jiaxin; Jin Jianxun (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2006)

Thanks to its unique properties, such as isotropic magnetic and thermal properties and low eddy current loss, the soft magnetic composite (SMC) material is suitable for application in electrical machines, especially ...
Performance Analysis of Energy Regeneration System of Electric Vehicle with Two Wheels under the Mode of Constant Braking Torque

Chen Jiaxin; Zhu Jianguo; Guo Youguang; Jin Jianxun (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2007)
Performance Analysis of Reinforced Soil Foundation Structures With Vertical Reinforcement

Shrestha Binod; Khabbaz Hadi; Fatahi Behzad (World Scientific, 2011)

This study examines the performance of geosynthetic reinforced wall inserting vertical elements in conjunction with conventional horizontal reinforcements. In this system, similar to normal reinforcement, the selected ...
Performance and Cost Comparison of NPC, FC and SCHB Multilevel Converter Topologies for High-Voltage Applications

Islam Md; Guo Youguang; Zhu Jianguo (IEEE, 2011)

The rapid increase in global energy consumption and the impact of greenhouse gas emissions have accelerated the renewable energy technology into a more competitive area. Due to the variable nature of renewable energy ...
Performance Characteristics of an HTS Linear Synchronous Motor with HTS Bulk Magnet Secondary

Jin Jianxun; Zheng Luhai; Guo Youguang; Zhu Jianguo (IEEE, 2011)

A single-sided high-temperature superconducting (HTS) linear synchronous motor (HTSLSM) with an HTS bulk magnet array as its secondary has been developed, and a split pulse coil magnetization system is used to magnetize ...
Performance Comparison and Analysis of Voice Communication over Ad Hoc Network

Kubik, Kurt.; Einicke, Garry.; Zhang, HuiYao.; Homer, John. (2007-03-12)

Currently, voice traffic (both local and long-distance) is gradually moving from traditional circuit-switched networks to IP-based, packet-switched networks. Another dominant trend is the development of mobile ad hoc ...
Performance degradation of differential space-time modulation in fast frequency flat fading Rayleigh MIMO channels

Smith David; Aubrey Timothy (Institute of Electrical and Electronics Engineers, 2003)

The performance degradation of differential unitary space-time modulation of any data rate, R, due to time selectivity is quantified for any number of transmit antennas, M, for fast frequency flat fading Rayleigh ...
Performance evaluation and mathematical modelling of granular activated carbon biofiltration in wastewater treatment

Hoang Thi To Loan; Vigneswaran Saravanamuth; Ngo Huu Hao; Kandasamy Jaya; Shim Wang; Chaudhary Durgananda; Gotety Bhaskara; Peiris Paul (Korean Institute of Chemical Engineering, 2008)

Biological filtration is an effective technique for removing organic matter from wastewater. The performance of a biofilter can be influenced by a range of operational conditions. In this study the performance of biofilters ...
Performance evaluation of doubly-fed twin stator induction machinedrive with voltage and current space vector control schemes

Chilakapati Nagamani; Ramsden Victor; Ramaswamy Venkataraman (IET, 2001)

The doubly-fed twin stator induction machine (DFTSIM) is of interest as an adjustable speed drive (ASD) and a variable speed generator (VSG), as it combines the advantages of a brushless drive with the potential for ...
Performance Evaluation of RAKE Receiver for UWB Systems using Measured Channels in Industrial Environments

Claesson, Ingvar.; Mohammed, Abbas.; Khan, Muhammad Gufran.; Nordberg, J¨orgen (2007-03-12)

The industrial environments are an important scenario for ultra wideband (UWB) communication systems. However, due to large number of metallic scatterers in the surroundings, the multipath offered by UWB channels is dense ...
Performance Improvement in High-Performance Brushless Rare-Earth Magnet Motors for Hybrid Vehicles by Use of High Flux-Density Steel

Dorrell David; Knight A; Popescu Mircea (IEEE, 2011)

Hybrid and electrical vehicles use mostly high-ef?ciency brushless permanent-magnet AC motors and sinewave drives. The motors utilize rare-earth magnet material and also are required to have a very high torque-per-rotor ...
Performance Improvement of an External-Rotor Split-Phase Induction Motor for Low-Cost Drive Applications Using External Rotor Can

Holik Piotr; Dorrell David; Popescu Mircea (IEEE, 2007)

This paper describes the performance of an external-rotor split-phase induction motor for use in such applications as ceiling fans (although the pole number would be much higher than the 2-pole machine studied here). This ...

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