# IEEE Transactions on Energy Conversion

## Filter Results

Displaying Results 1 - 25 of 32

Publication Year: 2012, Page(s):C1 - C4
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• ### IEEE Transactions on Energy Conversion publication information

Publication Year: 2012, Page(s): C2
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• ### Closed-Form Analysis of Squirrel-Cage Induction Motors With Anisotropic Modeling of Stator and Rotor

Publication Year: 2012, Page(s):553 - 560
Cited by:  Papers (4)
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This paper presents a closed-form solution of Maxwell's equations in squirrel-cage induction motors. The solution is obtained for a cylindrical multilayer geometry. The squirrel cage is represented by an equivalent anisotropic homogeneous medium. The effect of stator slots and teeth is included by a second anisotropic homogeneous medium. The induction motor is modeled as six concentric cylindrical... View full abstract»

• ### Quasi-Maximum Efficiency Point Tracking for Direct Methanol Fuel Cell in DMFC/Supercapacitor Hybrid Energy System

Publication Year: 2012, Page(s):561 - 571
Cited by:  Papers (15)
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Direct methanol fuel cells (DMFC) have been widely researched for applications in portable electronics due to their use of liquid fuel for easy storage and transportation compared to gaseous hydrogen. However, DMFC's performance is strongly affected by methanol crossover that significantly degrades the energy efficiency at low output power, and is characterized by an increasing efficiency at incre... View full abstract»

• ### Modeling of a Double-stator Linear Induction Motor

Publication Year: 2012, Page(s):572 - 579
Cited by:  Papers (10)
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In this paper, the coupling effect of a double-stator linear induction motor (LIM) is studied with the 3-D finite-element method (3-D FEM). The thrust force of the double-stator LIM with in-phase current is compared with the forces with inversed current and single stator excited. According to the 3-D FEM results, two coupling models of the double-stator LIM are built and validated by a thrust forc... View full abstract»

• ### Online System Identification and Adaptive Control for PEM Fuel Cell Maximum Efficiency Tracking

Publication Year: 2012, Page(s):580 - 592
Cited by:  Papers (25)
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This paper addresses an adaptive control approach for a maximum efficiency tracking of a proton exchange membrane fuel cell. The adaptive control has an online identification system that estimates the fuel cell efficiency behavior parameters and an optimization module that is responsible for providing the best operating conditions. The proposed approach does not require a cell-precise model and is... View full abstract»

• ### Comparison of Interior and Surface PM Machines Equipped With Fractional-Slot Concentrated Windings for Hybrid Traction Applications

Publication Year: 2012, Page(s):593 - 602
Cited by:  Papers (102)
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Electric drive systems, which include electric machines and power electronics, are a key enabling technology for advanced vehicle propulsion systems that reduce the petroleum dependence of the ground transportation sector. To have significant effect, electric drive technologies must be economical in terms of cost, weight, and size while meeting performance and reliability expectations. This paper ... View full abstract»

• ### Analysis and Validation of a Population-Based Design of a Wound-Rotor Synchronous Machine

Publication Year: 2012, Page(s):603 - 614
Cited by:  Papers (19)
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In recent research, a new magnetic equivalent circuit model and solution technique were developed to enable rapid calculation of the performance of wound-rotor synchronous machines. Herein, the development of a population-based design tool that utilizes the MEC is first described. The design tool is then applied to perform multiobjective optimization of a 2-kW portable power generator. Validation ... View full abstract»

• ### Optimal Power Utilization by Adjusting Torque Boost and Field Weakening Operation in Permanent Magnet Traction Motors

Publication Year: 2012, Page(s):615 - 623
Cited by:  Papers (6)
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Variable speed traction systems require constant adaptation of torque and speed, and thus, it is desirable to reduce motor size and weight by approximating constant power curve as much as possible. The design strategies under which a permanent magnet motor can demonstrate significant torque over-boost and field weakening capabilities using single-gear transmission are investigated. This paper give... View full abstract»

• ### Design Methodology of a Permanent Magnet Synchronous Machine for a Screwdriver Application

Publication Year: 2012, Page(s):624 - 633
Cited by:  Papers (18)
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In this paper, a novel methodology is presented in order to design a permanent magnet synchronous machine associated with a gearbox for a screwdriver application. The study shows how, from specification such as maximum volume, maximum heating, torque, and speed profiles, it is possible to formulate the sizing problem. The modeling is based on a purely analytical formulation. We will show that it i... View full abstract»

• ### Constant-Parameter $RL$-Branch Equivalent Circuit for Interfacing AC Machine Models in State-Variable-Based Simulation Packages

Publication Year: 2012, Page(s):634 - 645
Cited by:  Papers (16)
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Transient simulation programs, either nodal analysis-based electromagnetic transient program (EMTP-like) or state-variable-based, are used very extensively for modeling and simulation of various power and energy systems with electrical machines. It has been shown in the literature that the method of interfacing machine models with the external electrical network plays an important role in numerica... View full abstract»

• ### Analysis of Semipermeable Containment Sleeve Technology for High-Speed Permanent Magnet Machines

Publication Year: 2012, Page(s):646 - 653
Cited by:  Papers (13)
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This paper presents an alternative permanent magnet rotor containment technology. The use of a semipermeable material in a laminated structure is shown to result in a significant improvement in magnetic loading for a given thickness of containment compared to the use of magnetically inert materials such as carbon fiber or Inconel, while minimizing eddy current losses in the containment layer. An a... View full abstract»

• ### An ESPRIT-SAA-Based Detection Method for Broken Rotor Bar Fault in Induction Motors

Publication Year: 2012, Page(s):654 - 660
Cited by:  Papers (17)
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This paper presents a novel detection method for broken rotor bar fault (BRB) in induction motors based on the estimation of signal parameters via rotational invariance technique (ESPRIT) and simulated annealing algorithm (SAA). The performance of ESPRIT is tested with the simulated stator current signal of an induction motor with BRB. It shows that even with short-time measurement data, the techn... View full abstract»

• ### Enhanced Field Reconstruction Method for the Efficient Analysis of Permanent Magnet Synchronous Machines

Publication Year: 2012, Page(s):661 - 669
Cited by:  Papers (2)
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When designing permanent magnet synchronous machines, the voltage waveforms and mechanical forces are important in many applications. Many analysts use the finite-element (FE) method to determine fields in the air gap of machines. These fields are then used to calculate vector forces, voltages, or other quantities of interest. Although the FE method has been used for decades, it requires significa... View full abstract»

• ### Use of Time-Harmonic Finite-Element Analysis to Compute Stator Winding Eddy-Current Losses Due to Rotor Motion in Surface Permanent-Magnet Machines

Publication Year: 2012, Page(s):670 - 679
Cited by:  Papers (23)
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It is known from the literature that in electric machines with open stator slots, the air-gap flux partly enters the slot openings and induces eddy currents in the conductors placed closest to the air gap, possibly causing local overheating issues. For the study of such phenomenon, time-stepping finite-element analysis (TSFEA) is employed by many authors. This paper presents an alternative approac... View full abstract»

• ### Comparative Study on Dual-Channel Switched Reluctance Generator Performances Under Single- and Dual-Channel Operation Modes

Publication Year: 2012, Page(s):680 - 688
Cited by:  Papers (21)
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The multichannel generator is a kind of special generator, which is developed to enhance power reliability in safety critical applications. This paper compares the dynamic performance computation for a 12/8 dual-channel switched reluctance generator (DCSRG) under single- and dual-channel operation modes. First, the static phase self- and mutual inductances are numerically calculated through finite... View full abstract»

• ### Detection of Airgap Eccentricity for Induction Motors Using the Single-Phase Rotation Test

Publication Year: 2012, Page(s):689 - 696
Cited by:  Papers (26)
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The single-phase rotation test (SPRT) is a simple and reliable offline test frequently used for detecting problems in the rotor cage of induction motors without motor disassembly. Airgap eccentricity due to bearing degradation, shaft flexing, etc., is another problem that is difficult to detect, which can cause catastrophic motor failure. In this paper, the feasibility of using the SPRT for detect... View full abstract»

• ### A Versatile Rotor Position Computation Algorithm for the Power Control of a Grid-Connected Doubly Fed Induction Generator

Publication Year: 2012, Page(s):697 - 706
Cited by:  Papers (18)
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This paper proposes a simple yet versatile rotor position computation algorithm (RPCA) for the rotor position and speed of a doubly fed induction machine. The rotor position is computed in a straightforward manner obviating the need for estimation. The resolved components of stator flux vector are computed using measurable stator and rotor quantities. Although it is an open-loop technique, it does... View full abstract»

• ### Improving Transient Stability of Grid-Connected Squirrel-Cage Induction Generators by Plugging Mode Operation

Publication Year: 2012, Page(s):707 - 714
Cited by:  Papers (6)
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The majority of the fixed-speed wind turbines are equipped with squirrel-cage induction generators (IG) and ac-connected to the power system. During a fault in power system, voltage and rotor speed instability may occur, especially when the strength of the system compared to the power delivered by the IG is relatively low. This paper investigates a new method for improving the transient stability ... View full abstract»

• ### Hysteresis-Controller-Based Energy Harvesting Scheme for Microbial Fuel Cells With Parallel Operation Capability

Publication Year: 2012, Page(s):715 - 724
Cited by:  Papers (20)
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Microbial fuel cell (MFC) is an emerging technology for sustainable energy production. An MFC employs indigenous microorganisms as biocatalysts and can theoretically convert any biodegradable substrate into electricity, making the technology a viable solution for sustainable waste treatment or autonomous power supply. However, the electric energy currently generated from MFCs is not directly usabl... View full abstract»

• ### Integrated Modeling and Enhanced Control of DFIG Under Unbalanced and Distorted Grid Voltage Conditions

Publication Year: 2012, Page(s):725 - 736
Cited by:  Papers (43)
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This paper focuses on the enhanced control and improved fault-ride-through capability of a doubly fed induction generator (DFIG)-based wind turbine system under both unbalanced and distorted grid voltage conditions. A more integrated mathematical model of DFIG is first set up with both the negative-sequence and the low-order harmonic grid voltages considered. Based on the developed model, the inst... View full abstract»

• ### HIL-Based Finite-Element Design Optimization Process for the Computational Prototyping of Electric Motor Drives

Publication Year: 2012, Page(s):737 - 746
Cited by:  Papers (10)
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An online hardware-in-the-loop finite-element (FE)-based design optimization procedure is developed for the computational prototyping of coupled electric motor-drive system. A design optimization case for development of permanent magnet (PM) machine drive is presented. The physical representation of the machine is achieved by modeling the machine as a current adjustable load. The mutual interactio... View full abstract»

• ### Improved Stator Flux Estimation Method for Direct Torque Linear Control of Parallel Hybrid Excitation Switched-Flux Generator

Publication Year: 2012, Page(s):747 - 756
Cited by:  Papers (14)
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The hybrid excitation switched-flux (HESF) machine, which exhibits advantages including simple and robust rotor structure, good flux-regulation capability, and sinusoidal flux linkage, is suitable for use as a generator in dc power systems. In this paper, a direct torque linear control (DTLC) scheme is investigated for voltage regulation of a parallel HESF (PHESF) generator. This scheme can achiev... View full abstract»

• ### Three-Phase to Seven-Phase Power Converting Transformer

Publication Year: 2012, Page(s):757 - 766
Cited by:  Papers (6)
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Multiphase (more than three-phase electric power) electric drive system is the focus of a significant research in the last decade. Multiphase power transmission system is also investigated in the literature because multiphase transformers are needed at the input of rectifiers. In the multiphase power transmission and multiphase rectifier systems, the number of phases investigated is a multiple of ... View full abstract»

• ### Reactor Size Reduction by Slot Jet Cooling

Publication Year: 2012, Page(s):767 - 774
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We studied reactor size reduction by applying a slot jet cooling method. In power electronics products such as large power conversion equipments for industry applications (conversion equipments), reactors take up a large proportion of the volume and weight, and miniaturization of reactors is an important issue in reducing the size of conversion equipments. Reactors cooled by forced air convection ... View full abstract»

## Aims & Scope

The IEEE Transactions on Energy Conversion includes in its venue the research, development, design, application, construction, installation, operation, analysis and control of electric power generating and energy storage equipment (along with conventional, cogeneration, nuclear, distributed or renewable sources, central station and grid connection). The scope also includes electromechanical energy conversion, electric machinery, devices, systems and facilities for the safe, reliable, and economic generation and utilization of electrical energy for general industrial, commercial, public, and domestic consumption of electrical energy.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Juri Jatskevich
University of British Columbia