# IEEE Transactions on Energy Conversion

## Filter Results

Displaying Results 1 - 25 of 38

Publication Year: 2010, Page(s):C1 - C4
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• ### IEEE Transactions on Energy Conversion publication information

Publication Year: 2010, Page(s): C2
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• ### Online Sensorless Induction Motor Temperature Monitoring

Publication Year: 2010, Page(s):273 - 280
Cited by:  Papers (14)
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A sensorless internal temperature monitoring method for induction motors is proposed in this paper. This method can be embedded in standard motor drives, and is based on the stator windings resistance variation with temperature. A small AC signal is injected to the motor, superimposed to the power supply current, in order to measure the stator resistance online. The proposed method has the advanta... View full abstract»

• ### Improved Moving Coil Electric Machine for Internal Combustion Linear Generator

Publication Year: 2010, Page(s):281 - 286
Cited by:  Papers (12)
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This paper investigates the use of moving coil linear machines (MCLM) in the internal combustion linear generator (ICLG), which is a novel solution for series hybrid electric vehicles, distributed generation, and emergency power supply. According to the analysis of the basic structure of MCLM, an improved tubular MCLM equipped with quasi-Halbach magnetized magnets is suggested and analyzed with a ... View full abstract»

• ### Effect of Voltage and Load Variations on Efficiencies of a Motor-Pump System

Publication Year: 2010, Page(s):287 - 292
Cited by:  Papers (11)
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Centrifugal pumps are the most widely used ac-motor-driven pump systems mainly for water pumping applications. Due to increasing and varying load demand, voltage variation and unbalance is a reality and has to be dealt with carefully. Studies on motor-driven systems under conditions of voltage unbalance have either neglected or maintained constant magnitude of the rotational loss component and foc... View full abstract»

• ### Winding Configurations and Optimal Stator and Rotor Pole Combination of Flux-Switching PM Brushless AC Machines

Publication Year: 2010, Page(s):293 - 302
Cited by:  Papers (175)
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A simple analytical method is developed to compare the combinations of stator and rotor pole numbers in flux-switching permanent magnet (PM) machines in terms of back electromotive force (EMF) and electromagnetic torque. The winding connections and winding factors of machines having all poles and alternate poles wound, and different numbers of phases, from two to six, are determined by the coil-EM... View full abstract»

• ### Performance of an Isolated Induction Generator Under Unbalanced Loads

Publication Year: 2010, Page(s):303 - 311
Cited by:  Papers (26)
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In this paper, the performance of an isolated self-excited induction generator driven by a wind turbine under unbalanced loads is studied. First, the whole system, including the induction generator, the capacitors, and the loads, is modeled. The model used for the isolated induction generator is a diphase one obtained, using the Park transformation. This model allows the saturation effect to be ta... View full abstract»

• ### Fault Detection by Means of Hilbert–Huang Transform of the Stator Current in a PMSM With Demagnetization

Publication Year: 2010, Page(s):312 - 318
Cited by:  Papers (80)
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This paper presents a novel method to diagnose demagnetization in permanent-magnet synchronous motor (PMSM). Simulations have been performed by 2-D finite-element analysis in order to determine the current spectrum and the magnetic flux distribution due to this failure. The diagnostic just based on motor current signature analysis can be confused by eccentricity failure because the harmonic conten... View full abstract»

• ### A Coaxial Magnetic Gear With Halbach Permanent-Magnet Arrays

Publication Year: 2010, Page(s):319 - 328
Cited by:  Papers (113)  |  Patents (40)
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This paper proposes a coaxial magnetic gear that offers higher torque density, lower cogging torque, and lower iron losses than its counterparts. The key is to newly employ a Halbach permanent-magnet (PM) array to constitute the PM poles in the inner rotor and a partial Halbach array (two segments per pole) for the outer rotor. The corresponding magnetic field distributions, torque transmission, a... View full abstract»

• ### Incorporating Motion in Mesh-Based Magnetic Equivalent Circuits

Publication Year: 2010, Page(s):329 - 338
Cited by:  Papers (35)
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Recent research has compared the numerical efficiency of magnetic equivalent circuit (MEC) models based upon Kirchhoff's voltage law (mesh equations) and Kirchhoff's current law (nodal equations). For stationary magnetic components, it was shown that mesh-based methods converge in significantly fewer iterations. Although the numerical advantages would seemingly apply to electric machines, two issu... View full abstract»

• ### Induction Machine Modeling Approach Based on 3-D Magnetic Equivalent Circuit Framework

Publication Year: 2010, Page(s):339 - 347
Cited by:  Papers (38)
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Developments in power electronics technology, materials, and changing application requirements are driving advances in electric machines. Limitations of standard motor design, particularly for induction machines, restrict performance capabilities in drive applications. Current computer-aided design tools are inadequate to overcome these limitations. Lumped-parameter and finite-element models have ... View full abstract»

• ### Adjustable Flux Three-Phase AC Machines With Combined Multiple-Step Star-Delta Winding Connections

Publication Year: 2010, Page(s):348 - 355
Cited by:  Papers (28)
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In this paper, a complete theory and analysis method for combined star-delta three-phase windings from the point of view of magnetomotive force spatial harmonics content and equivalent winding factors calculation is developed. The method allows for any spatial angle and any coils percentage distribution between star and delta balanced winding systems. It is proven that connecting the inner delta i... View full abstract»

• ### Integral Sliding-Mode Direct Torque Control of Doubly-Fed Induction Generators Under Unbalanced Grid Voltage

Publication Year: 2010, Page(s):356 - 368
Cited by:  Papers (38)  |  Patents (2)
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An integral sliding-mode direct torque control (ISM-DTC) scheme with space-vector modulation for wind-energy conversion systems based on doubly-fed induction generators (DFIGs) under unbalanced grid voltage is proposed. The torque and power pulsations at twice the grid frequency caused by unbalanced grid voltage can be minimized by the proposed ISM-DTC scheme. Compared with existing control scheme... View full abstract»

• ### Harmonics Mitigation in LCI-Fed Synchronous Motor Drives

Publication Year: 2010, Page(s):369 - 380
Cited by:  Papers (13)
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A load-commutated inverter (LCI) fed synchronous motor (SM) is operated as an adjustable speed drive (ASD) in high-power applications. These drives are known as commutatorless motor (CLM) drives and posses many promising features like high efficiency, economic operation, and flexibility of control in high-power ratings. The CLM drives are used in compressors, blowers, fans, pumps, and mill drives ... View full abstract»

• ### Optimization of Magnet Segmentation for Reduction of Eddy-Current Losses in Permanent Magnet Synchronous Machine

Publication Year: 2010, Page(s):381 - 387
Cited by:  Papers (71)
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Rare earth permanent magnet synchronous machines with the pulsewidth modulated supply are exposed to magnets' heating due to harmonic fields, which rotate in relation to rotor. In cases when skin effect is negligible, the corresponding eddy-current losses in magnets can be reduced by segmentation of magnets. In this paper, we propose an analytical method to evaluate the effect of both circumferent... View full abstract»

• ### Steady-State Analysis of a Permanent-Magnet-Assisted Salient-Pole Synchronous Generator

Publication Year: 2010, Page(s):388 - 393
Cited by:  Papers (15)
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This paper presents a simple mathematical model for the steady-state analysis of a permanent-magnet-assisted salient-pole synchronous generator (PMa-SG). The PMa-SG is a new type of salient-pole SG that has PMs between the adjacent pole shoes. The developed model takes into account the magnetic saturation and core loss, and enables quantitative predictions of load characteristics from the no-load ... View full abstract»

• ### MRAS Sensorless Vector Control of an Induction Motor Using New Sliding-Mode and Fuzzy-Logic Adaptation Mechanisms

Publication Year: 2010, Page(s):394 - 402
Cited by:  Papers (90)
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In this paper, two novel adaptation schemes are proposed to replace the classical PI controller used in model reference adaptive speed-estimation schemes that are based on rotor flux. The first proposed adaptation scheme is based on sliding-mode theory. A new speed-estimation adaptation law is derived using Lyapunov theory to ensure estimation stability, as well as fast error dynamics. The other a... View full abstract»

• ### Thermal Performance of an Open-Slot Modular-Wound Machine With External Rotor

Publication Year: 2010, Page(s):403 - 411
Cited by:  Papers (40)
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This paper describes the thermal analysis of an external-rotor brushless permanent-magnet motor used in a traction application. The machine has a nonstandard open-slot stator lamination and is wound with a single-layer concentrated modular'' winding. This structure potentially has several heat transfer advantages compared to the more traditional double-layer concentrated winding. An analytical l... View full abstract»

• ### A Fault-Tolerant Induction Generator System Based on Instantaneous Torque Control (ITC)

Publication Year: 2010, Page(s):412 - 421
Cited by:  Papers (12)  |  Patents (2)
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A fault-tolerant scheme of an induction generator using instantaneous torque control (ITC) is proposed in this paper. In the case that a power switch of the converter goes wrong, the system can be reconfigured to a four-switch three-phase (FSTP) generator system and continue supplying some power. In the reconfigured system, the ITC strategy can also be applied; the only differences lie in the avai... View full abstract»

• ### A Series-Dynamic-Resistor-Based Converter Protection Scheme for Doubly-Fed Induction Generator During Various Fault Conditions

Publication Year: 2010, Page(s):422 - 432
Cited by:  Papers (132)
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This paper proposes a new converter protection method, primarily based on a series dynamic resistor (SDR) that avoids the doubly-fed induction generator (DFIG) control being disabled by crowbar protection during fault conditions. A combined converter protection scheme based on the proposed SDR and conventional crowbar is analyzed and discussed. The main protection advantages are due to the series ... View full abstract»

• ### Study of a Novel Energy Efficient Single-Phase Induction Motor With Three Series-Connected Windings and Two Capacitors

Publication Year: 2010, Page(s):433 - 440
Cited by:  Papers (13)
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This paper presents a novel energy efficient single-phase induction motor with three series-connected windings and two capacitors. By suitable selection of capacitors, the currents in three windings are approximately symmetrical, and thus, the motor can operate approximately symmetrically from single-phase supply. Based on the symmetrical components method, the condition for balanced operation is ... View full abstract»

• ### Reducing Harmonic Eddy-Current Losses in the Stator Teeth of Interior Permanent Magnet Synchronous Machines During Flux Weakening

Publication Year: 2010, Page(s):441 - 449
Cited by:  Papers (32)
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Interior permanent magnet (IPM) synchronous machines can experience large harmonic eddy-current losses in the stator teeth under flux-weakening operation, significantly depressing the efficiency of these machines at high operating speeds. This paper presents a new analytical/finite-element hybrid design approach to reduce the harmonic eddy-current losses in IPM machine stator teeth during flux-wea... View full abstract»

• ### Synchronous Reluctance Motor With Form Blocked Rotor

Publication Year: 2010, Page(s):450 - 456
Cited by:  Papers (24)
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A novel type of mechanically robust synchronous reluctance rotor structure is proposed for medium speed synchronous reluctance machines. A machine utilizing the construction is built, tested, and compared to another machine with the common synchronous reluctance rotor structure. The machine is also simulated using the finite element method and the results are compared to the tested values. The obt... View full abstract»

• ### Effects of Fan Blade Forward-Swept and Inclined Amounts in Electric Motors

Publication Year: 2010, Page(s):457 - 464
Cited by:  Papers (2)
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This paper studies the effects of blades' forward-swept amount in the rotation direction and forward-inclined amount in the intake direction on the flow around the fan blades of a large open-type motor. The authors have previously clarified this flow separation on the blade surface under high ventilation resistance from flow analysis and visualization experiments. To prevent flow separation, they ... View full abstract»

• ### Key Technical Challenges for the Electric Power Industry and Climate Change

Publication Year: 2010, Page(s):465 - 473
Cited by:  Papers (15)
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This paper, prepared by the Climate Change Technology Subcommittee, a subcommittee of the Power and Energy Society Energy Development and Power Generation Committee, identifies key technical issues facing the electric power industry, related to global climate change. The technical challenges arise from: 1) impacts on system operating strategies, configuration, and expansion plans of emission-reduc... 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.

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## Meet Our Editors

Editor-in-Chief
Juri Jatskevich
University of British Columbia