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# IEEE Transactions on Energy Conversion

## Filter Results

Displaying Results 1 - 25 of 30

Publication Year: 2009, Page(s):C1 - C4
| PDF (42 KB)
• ### IEEE Transactions on Energy Conversion publication information

Publication Year: 2009, Page(s): C2
| PDF (39 KB)
• ### Influence of Saturation Level on the Effect of Broken Bars in Induction Motors Using Fundamental Electromagnetic Laws and Finite Element Simulations

Publication Year: 2009, Page(s):557 - 564
Cited by:  Papers (25)
| | PDF (740 KB) | HTML

This study is dedicated to faulty induction motors. These motors are often used in industrial applications and the monitoring of their condition becomes important for production maximization. This paper gives precise understanding of the effect of the broken bar on the stator currents, a quantity more and more used for fault detection and quantification. This study uses 2-D finite element (FE) mod... View full abstract»

• ### A Schwarz–Christoffel-Based Analytical Method for Electric Machine Field Analysis

Publication Year: 2009, Page(s):565 - 577
Cited by:  Papers (21)
| | PDF (695 KB) | HTML

With the recent increase in the availability and widespread use of inverters, exotic rare earth permanent-magnet materials, and low-cost, precision manufacturing, new design tools are needed to aid engineers in designing state-of-the-art electromechanical systems. For this purpose, recent software advances allow a reexamination of previously intractable analytical solutions to the boundary value p... View full abstract»

• ### A New Rapid Nonlinear Simulation Method for Switched Reluctance Motors

Publication Year: 2009, Page(s):578 - 586
Cited by:  Papers (16)
| | PDF (494 KB) | HTML

This paper presents a new rapid nonlinear simulation method for switched reluctance motors (SRMs). An exact mathematical relationship among the magnetization curves of an SRM is obtained by curve fitting the variable parameters in the Torrey model. Only geometry-based requirements are taken as input needed. Since complete magnetic characteristics are not necessary, a lot of preliminary measurement... View full abstract»

• ### Force Calculation in 3-D Magnetic Equivalent Circuit Networks With a Maxwell Stress Tensor

Publication Year: 2009, Page(s):587 - 593
Cited by:  Papers (24)
| | PDF (658 KB) | HTML

Magnetic equivalent circuit (MEC) models are increasingly valuable for analysis and design of electromechanical devices, particularly electrical machines, because of their moderate computational effort and reasonable accuracy. Force and torque calculations in prior MEC implementations are almost exclusively based on the virtual work method (VWM) adapted to the specific device model. But VWM does n... View full abstract»

• ### Slotless PM Brushless Motor With Helical Edge-Wound Laminations

Publication Year: 2009, Page(s):594 - 598
Cited by:  Papers (3)
| | PDF (590 KB) | HTML

This paper discusses the analysis and design of a very thin slotless permanent-magnet (PM) brushless motor whose stator laminations are manufactured from a single strip of steel that is edge wound into a spiral (like a ldquoslinkyrdquo) and then fitted over the windings that are preformed on the outside surface of a nonconducting former. Analytical and finite-element analysis (FEA) were used to de... View full abstract»

• ### Characterization of the Rotor Magnetic Field in a Brushless Doubly-Fed Induction Machine

Publication Year: 2009, Page(s):599 - 607
Cited by:  Papers (27)
| | PDF (602 KB) | HTML

The large increase in wind generation could improve the final development of wind systems with brushless doubly-fed induction machines (BDFIM) as an alternative to the doubly-fed asynchronous machines. For this reason, a detailed study of several aspects of the BDFIM design, as well as of its rotor configuration, is absolutely essential. In this paper, the authors present an alternative formulatio... View full abstract»

• ### An Unsymmetrical Two-Phase Induction Motor Drive With Slip-Frequency Control

Publication Year: 2009, Page(s):608 - 616
Cited by:  Papers (17)
| | PDF (1022 KB) | HTML

This paper proposes a closed-loop control strategy to operate an off-the-shelf single-phase induction motor (IM) as a symmetrical two-phase IM. The proposed control strategy employs the SFC technique to independently control the stator currents of both the main and auxiliary windings, and make them follow a predefined sinusoidal waveform. Simulation and experimental results show that the proposed ... View full abstract»

• ### Load-Following Strategies for Evolution of Solid Oxide Fuel Cells Into Model Citizens of the Grid

Publication Year: 2009, Page(s):617 - 625
Cited by:  Papers (11)
| | PDF (473 KB) | HTML

Proper converter design can allow solid oxide fuel cells operated as distributed generators to mutually benefit both the load and the electric utility during steady-state conditions, but dynamic load variations still present challenges. Unlike standard synchronous generators, fuel cells lack rotating inertia and their output power ramp rate is limited by design. Two strategies are herein investiga... View full abstract»

• ### Dynamic Stability Enhancement and Power Flow Control of a Hybrid Wind and Marine-Current Farm Using SMES

Publication Year: 2009, Page(s):626 - 639
Cited by:  Papers (50)
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This paper presents a control scheme based on a superconducting magnetic energy storage (SMES) unit to achieve both power flow control and damping enhancement of a novel hybrid wind and marine-current farm (MCF) connected to a large power grid. The performance of the studied wind farm (WF) is simulated by an equivalent 80-MW induction generator (IG) while an equivalent 60-MW IG is employed to simu... View full abstract»

• ### Flicker Mitigation by Active Power Control of Variable-Speed Wind Turbines With Full-Scale Back-to-Back Power Converters

Publication Year: 2009, Page(s):640 - 649
Cited by:  Papers (42)
| | PDF (497 KB) | HTML

Grid-connected wind turbines are fluctuating power sources that may produce flicker during continuous operation. This paper presents a simulation model of a megawatt-level variable-speed wind turbine with a full-scale back-to-back power converter developed in the simulation tool of PSCAD/EMTDC. Flicker emission of this system is investigated. Reactive power compensation is mostly adopted for flick... View full abstract»

• ### Improving Stability of a DFIG-Based Wind Power System With Tuned Damping Controller

Publication Year: 2009, Page(s):650 - 660
Cited by:  Papers (72)
| | PDF (340 KB) | HTML

This paper focuses on the implementation of a damping controller for the doubly fed induction generator (DFIG) system. Coordinated tuning of the damping controller to enhance the damping of the oscillatory modes is presented using bacterial foraging technique. The effect of the tuned damping controller on converter ratings of the DFIG system is also investigated. The results of both eigenvalue ana... View full abstract»

• ### Wind Farms as Reactive Power Ancillary Service Providers—Technical and Economic Issues

Publication Year: 2009, Page(s):661 - 672
Cited by:  Papers (99)
| | PDF (405 KB) | HTML

This paper examines the possibility of providing reactive power support to the grid from wind farms (WFs) as a part of the ancillary service provisions. Detailed analysis of the WF capability curve is carried out considering maximum hourly variation of wind power from the forecasted value. Different cost components are identified, and subsequently, a generalized reactive power cost model is develo... View full abstract»

• ### Experimental Evaluation of Active Filtering in a Single-Phase High-Frequency AC Microgrid

Publication Year: 2009, Page(s):673 - 682
Cited by:  Papers (38)
| | PDF (788 KB) | HTML

Population growth in the world along with rapid technological expansion of the society demand efficient, economically viable, and environment-friendly energy conversion systems. The previous theoretical and simulation works have demonstrated that a 500-Hz single-phase high-frequency ac (HFAC) microgrid is a novel step toward integrating renewable energy sources in a distributed generation system. ... View full abstract»

• ### Adaptive Grid-Voltage Sensorless Control Scheme for Inverter-Based Distributed Generation

Publication Year: 2009, Page(s):683 - 694
Cited by:  Papers (15)
| | PDF (671 KB) | HTML

This paper presents an adaptive grid-voltage sensorless control scheme for inverter-based distributed generation units based on an adaptive grid-interfacing model. An adaptive grid-interfacing model is proposed to estimate, in real time, the interfacing parameters seen by the inverter and the grid-voltage vector simultaneously. A reliable solution to the present nonlinear estimation problem is pre... View full abstract»

• ### Z-Source-Inverter-Based Flexible Distributed Generation System Solution for Grid Power Quality Improvement

Publication Year: 2009, Page(s):695 - 704
Cited by:  Papers (59)
| | PDF (934 KB) | HTML

Distributed generation (DG) systems are usually connected to the grid using power electronic converters. Power delivered from such DG sources depends on factors like energy availability and load demand. The converters used in power conversion do not operate with their full capacity all the time. The unused or remaining capacity of the converters could be used to provide some ancillary functions li... View full abstract»

• ### Maximum Power Tracking Control for a Wind Turbine System Including a Matrix Converter

Publication Year: 2009, Page(s):705 - 713
Cited by:  Papers (92)  |  Patents (1)
| | PDF (371 KB) | HTML

This paper focuses on maximum wind power extraction for a wind energy conversion system composed of a wind turbine, a squirrel-cage induction generator, and a matrix converter (MC). At a given wind velocity, the mechanical power available from a wind turbine is a function of its shaft speed. In order to track maximum power, the MC adjusts the induction generator terminal frequency, and thus, the t... View full abstract»

• ### A New Variable-Speed Wind Energy Conversion System Using Permanent-Magnet Synchronous Generator and $Z$-Source Inverter

Publication Year: 2009, Page(s):714 - 724
Cited by:  Papers (91)
| | PDF (1140 KB) | HTML

With the growth of wind energy conversion systems (WECSs), various technologies are developed for them. Permanent-magnet synchronous generators (PMSGs) are used by these technologies due to special characteristics of PMSGs such as low weight and volume, high performance, and the elimination of the gearbox. In this paper, a new variable-speed WECS with a PMSG and Z-source inverter is propose... View full abstract»

• ### Control Strategies for Battery Energy Storage for Wind Farm Dispatching

Publication Year: 2009, Page(s):725 - 732
Cited by:  Papers (216)  |  Patents (3)
| | PDF (418 KB) | HTML

Integrating a battery energy storage system (BESS) with a large wind farm can smooth out the intermittent power from the wind farm. This paper focuses on development of a control strategy for optimal use of the BESS for this purpose. The paper considers a conventional feedback-based control scheme with revisions to incorporate the operating constraints of the BESS, such as state of charge limits, ... View full abstract»

• ### Probabilistic Evaluation of Transient Stability of a Wind Farm

Publication Year: 2009, Page(s):733 - 739
Cited by:  Papers (16)
| | PDF (146 KB) | HTML

This paper presents a probabilistic-based approach to evaluate transient stability of a wind farm. In this context, investigations have been conducted on a hypothetical system representing a typical wind farm taking into consideration the uncertainty of several factors associated with the practical operation of a power system. A risk index that reflects the likelihood that the wind farm encounters... View full abstract»

• ### Integration of an Energy Capacitor System With a Variable-Speed Wind Generator

Publication Year: 2009, Page(s):740 - 749
Cited by:  Papers (90)
| | PDF (965 KB) | HTML

This paper presents a system using an energy capacitor system (ECS) to smoothen the output power fluctuation of a variable-speed wind farm. The variable-speed wind turbine driving a permanent-magnet synchronous generator is considered to be connected to the ac network through a fully controlled frequency converter. The detailed modeling and control strategy of the frequency converter as well as va... View full abstract»

• ### Wind Energy Analysis for Vadravadra Site in Fiji Islands: A Case Study

Publication Year: 2009, Page(s):750 - 757
Cited by:  Papers (10)
| | PDF (663 KB) | HTML

Rising fuel costs, increased energy consumption, and growing environmental concerns have led mankind to look for alternate sources of energy apart from conventional fuels. One of the promising renewable energy sources is wind energy. For harnessing wind energy from a wind turbine or wind farm, wind resource assessment (WRA) needs to be carried out. WRA will highlight which site is optimum (in term... View full abstract»

• ### Rotor Position Phase-Locked Loop for Decoupled $Phbox{-}Q$ Control of DFIG for Wind Power Generation

Publication Year: 2009, Page(s):758 - 765
Cited by:  Papers (39)
| | PDF (685 KB) | HTML

Implementation of decoupled P-Q control of doubly fed induction generators requires the positions of the rotors to be known. The rotor position phase-lock loop (PLL) is an invention that extracts rotor position and speed simultaneously by ¿sensorless¿ means. The rotor position PLL is parameter-insensitive because, apart from an approximate value of the magnetization reactan... View full abstract»

• ### Anticipatory Control of Wind Turbines With Data-Driven Predictive Models

Publication Year: 2009, Page(s):766 - 774
Cited by:  Papers (27)  |  Patents (8)
| | PDF (762 KB) | HTML

The concept of anticipatory control applied to wind turbines is presented. Anticipatory control is based on the model predictive control (MPC) approach. Unlike the MPC method, noncontrollable variables (such as wind speed) are directly considered in the dynamic equations presented in the paper to predict response variables, e.g., rotor speed and turbine power output. To determine future states of ... 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