Citations with the tag: ELECTRIC generators -- Alternating current
Results 51 - 100
- Development and Implementation of Control Algorithms for Synchronous Generator.
Erceg, Igor; Erceg, Gorislav; Sumina, Damir // Automatika: Journal for Control, Measurement, Electronics, Compu; 2011, Vol. 52 Issue 2, p85
This paper proposes a DSP based simulator for development and implementation of control algorithms. The simulator is used to control a synchronous aggregate model in real time. The simulator consists of a PC (on which a synchronous generator connected to AC network is simulated) connected...
- Prestolite posts $27.6M net income for 1Q.
Kosdrosky, Terry // Crain's Detroit Business; 5/17/2004, Vol. 20 Issue 20, p20
Ann Arbor, Michigan-based Prestolite Electric Holding Inc. reported improved first-quarter sales and net income from last year, although operating income fell because of the cost of selling the company. Prestolite, which manufactures alternators and starter motors, switched private-equity owners...
- Evaluaciï¿½n de la protecciï¿½n del estï¿½tor de generadores sincrï¿½nicos ante fallas a tierra por medio del mï¿½todo de inyecciï¿½n subarmï¿½nica.
Giraldo, Luis C.; Mora-Fl�rez, Juan J.; Olguin, Gabriel // Ingenierï¿½a y Competitividad; Jun2008, Vol. 10 Issue 1, p21
In this paper, we make an evaluation of the complete ground-fault protection of the stator of synchronous generators by use of the subharmonic injection method. Firstly, we describe two approaches for the complete protection of the stator: the third harmonic method and the method of subharmonic...
- An Adaptive d-q Axis Model of Saturated Induction Generators.
Lupsa-Tataru, Lucian // International Review of Automatic Control; May2010, Vol. 3 Issue 3, p238
In order to carry out the on-line solving of contingency cases in the energy control centers, the power generators have to be described by means of effectual adaptive models. In addition, the implementation of such models into the high-level software environments should be a straightforward...
- Contributions to the tridimensional analysis of electromagnetic field in claw-poles alternator.
Barz, Cristian; Oprea, Constantin // Journal of Electrical & Electronics Engineering; Jun2010, Vol. 3 Issue 1, p29
The paper presents the tridimensional analysis of electromagnetic field of a claw poles alternator, in whose construction, non-magnetic material has been used, such as aluminum, that form the rings in the rotor's structure. This structure aims to establish lower levels of saturation in the...
- Actual configurations of wind power conversion systems and further aspects of wind turbines.
Prutianu, Florin; Popescu, Viorel // Journal of Electrical & Electronics Engineering; Jun2010, Vol. 3 Issue 1, p167
This paper deals with the actual stages of wind turbines. Wind turbines have in their composition doubly fed induction generators (DIFG) or permanent magnet synchronous generator (PMSG). In this paper some configurations of wind power conversion systems are presented and some problems from wind...
- Design of Voltage Regulating Control Device of Improved PID Algorithm for the Vehicle AC Generator Based on DSP.
Du Baojiang; Guo Jingmin; Ji Changqin; Wei Xiong; Sun Anbo // Modern Applied Science; Jun2012, Vol. 6 Issue 6, p7
The performance of the voltage regulating control system will have a direct impact on the power supply quality of vehicle generator. Therefore this paper researches a design of voltage regulating control device of improved PID algorithm for the vehicle alternating current (AC) generator based on...
- Performance Analysis of a Synchronous Generator Under Loss of Excitation.
Mazhar, R. M.; Tashakori, H.; Kar, N. C. // International Review of Electrical Engineering; Mar/Apr2008, Vol. 3 Issue 2, p371
Synchronous generators subjected to LOF (Loss of Field or Excitation) may sustain severe damage in the generator resulting from high current and pulsating torques. In this research, a new scheme is proposed by taking the saturation in main flux into account to design a LOF impedance relay. A...
- Sinhrona generatora stabilitates paaugstinaï¿½ana arierosmes sprieguma reguleï¿½anas metodi.
Gurovs, Nikolay; Petrichenko, Romans // Power & Electrical Engineering; 2010, Issue 26, p73
Problem of power supply system's safety and quality of control has taken on special significance due to development and complication of electropower systems. The effective decision of this problem is prevented by deficient controllability with anticrush automatics existing devices in emergency...
- Problems Related to Excitation Winding Surface Temperature Measurement of a Salient Pole Synchronous Generator in Rotation.
Hanic, Zlatko; Vrazic, Mario; Stipetic, Stjepan // Journal of Energy & Power Engineering; May2012, Vol. 6 Issue 5, p826
This paper addresses some of the problems related to direct surface temperature measurement of a salient pole synchronous generator excitation winding in rotation. Excitation winding temperature is used for determining the dynamic limit in a PQ diagram. The paper also addresses procedures of...
- Analytical Prediction of Inductances of Slotless Axial-Flux Permanent Magnet Synchronous Generator Using Quasi-3D Method.
Pradikta, A.; Dahono, P. A. // International Journal on Electrical Engineering & Informatics; 2009, Vol. 1 Issue 2, p115
The article discusses the analytical prediction method used for the inductions of slotless axial-flux permanent magnet (AFPM) synchronous generator using Quasi-three dimensional (3D) method. It states that Quasi-3D method divides the AFPM generator geometry into various computation sections and...
- Battery Condition and Alternator Tester.
Gamauf, Mike; Swickard, James E. // Business & Commercial Aviation; Nov2005, Vol. 97 Issue 5, p152
This article reports that VDC Electronics Inc. is now offering its BatteryMINDer, BACT model 12104, battery and alternator condition tester as a separate retail product from its line of pulse-mode battery chargers, maintainers and desulphators. The compact BACT attaches to the battery terminals,...
- Probe of the Si nanoclusters to Er3+ energy transfer dynamics by double-pulse excitation.
Falconieri, M.; Borsella, E.; De Dominicis, L.; Enrichi, F.; Franz�, G.; Priolo, F.; Iacona, F.; Gourbilleau, F.; Rizk, R. // Applied Physics Letters; 8/8/2005, Vol. 87 Issue 6, p061109
In this letter the dynamics of the energy transfer (ET) process from amorphous silicon nanoclusters (Si-nc) to Er3+ ions is investigated in co-doped silica glasses. Using a double pulse setup the recovery time of the sensitizing effect is monitored and direct evidence is found for the occurrence...
- Influence on the rectifiers of rotor losses in high-speed permanent magnet synchronous alternator.
Seok-Myeong Jang; Han-Wook Cho; Yeon-Ho Jeong // Journal of Applied Physics; 4/15/2006, Vol. 99 Issue 8, p08R315
This article deals with the rotor losses in the high-speed permanent magnet (PM) synchronous alternator for distributed power generation system. Specifically, the influence of rectifiers on the rotor losses is investigated. On the basis of analytical field analysis and two-dimensional finite...
- Combined Optimal Sizing and Control for a Hybrid Tracked Vehicle.
Yuan Zou; Fengchun Sun; Xiaosong Hu; Guzzella, Lino; Peng, Huei // Energies (19961073); Nov2012, Vol. 5 Issue 11, p4697
The optimal sizing and control of a hybrid tracked vehicle is presented and solved in this paper. A driving schedule obtained from field tests is used to represent typical tracked vehicle operations. Dynamics of the diesel engine-permanent magnetic AC synchronous generator set, the lithium-ion...
- High-Output Alternator.
Clemans, John // MotorBoating; Mar2004, Vol. 193 Issue 3, p126
Introduces the Eco-Tech T-305-I alternator for boats from API Marine. Description of the alternator; Contribution of the patented magnet hybrid rotor design to the alternator's strength; Electric output; Costs.
- Charging systems.
Wilson, Marilyn // Fleet Owner; Jan2001, Vol. 96 Issue 1, p64
Deals with the design changes made in the charging systems and alternators of heavy-duty trucks due to increased power demands. Features of an alternator to be introduced by Robert Bosch company; Basic avenues to making 42 volt systems; Information on an alternator technology being developed by...
- Keep your alternators out of trouble.
Baxter, John // Commercial Carrier Journal; Oct2009, Vol. 166 Issue 10, p30
The article describes several alternators technology for trucks. Explanation is offered on how to choose alternators that will have the correct output characteristics. Suggestions are offered on alternator maintenance, including assessments of batteries, cables and connections in the charging...
- COMBINED VIBRATOR-SLOT STRUCTURES IN ELECTRODYNAMIC VOLUMES.
Baxter, John // Progress in Electromagnetics Research B; 2012, Vol. 38, p247
The article discusses a study which developed the problem of excitation of electromagnetic fields by a material body of finite dimensions in presence of coupling hole between two arbitrary electrodynamic volumes. A transition from the equations to one-dimensional equations for the currents in a...
- Different Self Excitation Techniques for Slip Ring Self Excited Induction Generator.
Devabhaktuni, Swati; Kumar, S.V.Jayaram // International Journal of Computer Applications; Jan2012, Vol. 38, p19
The paper discusses the different possible techniques to self excite the slip ring induction machine working as self excited induction generator. The generated voltage due to self excitation is initiated and sustained with constant value of power capacitors connected across the stator windings....
- A Z-Source Inverter for an Integrated Starter Alternator.
HANGIU, Radu-Petru; FILIP, Andrei-Toader; MARTIS, Claudia Steluta; BIR�, K�roly �goston // Journal of Computer Science & Control Systems; 2012, Vol. 5 Issue 2, p15
This paper presents an overview of an integrated starter alternator system used in mild hybrid electric vehicles. Inverter configurations that are used in HEV are assessed with an emphasis on the novel Z- source inverter topology. The final part presents a simulation model of a bi-directional...
- Alternator Repairs: Plane Power Tops.
HANGIU, Radu-Petru; FILIP, Andrei-Toader; MARTIS, Claudia Steluta; BIR�, K�roly �goston // Aviation Consumer; Feb2013, Vol. 43 Issue 2, p20
The article offers information regarding importance of troubleshooting and discusses several aspects of aircraft alternators including their function, failure and replacement options. It mentions that a careful troubleshooting in case of failure of charging system of an aircraft saves money. It...
- A Novel Maximum Power Point Tracking Control for Permanent Magnet Direct Drive Wind Energy Conversion Systems.
Ying Zhu; Ming Cheng; Wei Hua; Wei Wang // Energies (19961073); May2012, Vol. 5 Issue 5, p1398
This paper proposes a novel optimal current given (OCG) maximum power point tracking (MPPT) control strategy based on the theory of power feedback and hill climb searching (HCS) for a permanent magnet direct drive wind energy conversion system (WECS). The presented strategy not only has the...
- An Axial-Flux Permanent Magnet (AFPM) Generator for Defence Applications - Paradigm Shift in Electrical Machine.
Parlikar, V. V.; Kurulkar, P. M.; Rathod, K. P.; Kumari, Poonam // International Journal on Electrical & Power Engineering; Feb2012, Vol. 3 Issue 1, p33
This paper discusses the indigenous development of novel, innovative, compact, lightweight and highly efficient Permanent Magnet based Alternator incorporating Axial Flux technology. The above prototype alternator has been successfully developed and realized by the author team @ R&DE (Engrs),...
- Joy Global adds Optidrive to underground mining equipment.
Parlikar, V. V.; Kurulkar, P. M.; Rathod, K. P.; Kumari, Poonam // Mining Engineering; Sep2010, Vol. 62 Issue 9, p58
The article features the Optidrive alternating current (ac) variable frequency drive (VFD) from Joy Mining Machinery. They can be used in underground mining equipment and as an option on the Stamler products of feederbreakers also being produced by the company. It states that the company brought...
- The World Market for Electric Motors with Output Exceeding 37.5 w and AC Generators: A 2011 Global Trade Perspective.
Parker, Philip M. // Global Trade Perspectives; 1/ 4/2010, pN.PAG
Several tables and graphs related to the 2011 global trade perspective on the market for electric motors with output exceeding 37.5 watts (w) and alternating current (ac) generators for countries in Africa, Asia, Europe, Latin America, North America and the Caribbean, Oceana, and the Middle East...
- The World Market for AC Electric Motors with Output Exceeding 37.5 w: A 2011 Global Trade Perspective.
Parker, Philip M. // Global Trade Perspectives; 1/ 4/2010, pN.PAG
Several tables and graphs related to the 2011 global trade perspective on the market for alternating current (ac) electric motors with output exceeding 37.5 watts (w) for countries in Africa, Asia, Europe, Latin America, North America and the Caribbean, Oceana, and the Middle East are presented.
- The World Market for AC Electric Generators: A 2011 Global Trade Perspective.
Parker, Philip M. // Global Trade Perspectives; 1/ 4/2010, pN.PAG
Several tables and graphs related to the 2011 global trade perspective for alternating current (ac) electric generators market for countries in Africa, Asia, Europe, Latin America, North America and the Caribbean, Oceana, and the Middle East are presented.
- PLUG-IN VOLTMETER IS A JACK OF MANY TRADES.
Parker, Philip M. // Light Plane Maintenance; Jul2012, Vol. 34 Issue 7, p9
The article focuses on the benefits and advantages of plug-in voltmeters in aircraft mechanics and maintenance. It mentions that plug-in voltmeters are essential in monitoring a plane's battery health. It notes that such voltmeters monitor over or undercharging of a plane's alternator. It states...
- Improve your Alternator Charging System.
COTE, JEFF // Pacific Yachting; Feb2013, Vol. 55 Issue 2, p69
The article offers suggestions on how to improve a boat's alternator charging system. It suggests ensuring there is minimum loss of energy produced by the alternator. It suggests reducing the wire length between the alternator and the battery using an external regulator. It suggests taking care...
- Yoked waterwheel-windmill powers a remote ranch.
Lord, Ted // Popular Science; Apr82, Vol. 220 Issue 4, p51
The article focuses on the creation of an independent power system through a waterwheel-windmill in San Diego, California. The system composed with three-blade, 16 foot-diameter and its wind machine drives 12 volt-alternators. It is controlled by an electric valve, which is actuated either...
- Direct Power Control of Doubly-Fed Induction Generators Using an Analytical Optimized Switching Table.
Kamalzadeh, Abdulrahim; Radan, Ahmad // International Review of Electrical Engineering; Jan/Feb2010, Vol. 5 Issue 1, p70
In this paper the role of the voltage vectors of a two-level converter on variations of active and reactive power of a Doubly Fed Induction Generator (DFIG) is studied more deeply. Previous approaches only have a qualitative look toward this issue that consequently, leads to extraction of an...
- Air-Gap Eccentricity Effects on Harmonic Contents of Field Current in Synchronous Generators.
Raziee, Seyed Morteza; Kelk, Homayoun Meshgin; Reza-Alikhani, Hamid-Reza; Omati, Ali // International Review of Electrical Engineering; Jan/Feb2010, Vol. 5 Issue 1, p83
Mixed air gap eccentricity will produce extra harmonics in salient pole synchronous machines stator and field currents. It is determined that magnitudes of some harmonics will change with the variation of air gap eccentricity. In this paper, salient pole synchronous machines are modeled using...
- EXCITATION SYSTEM MODELS OF GENERATORS OF BALTI AND EESTI POWER PLANTS.
Attikas, R.; Tammoja, H. // Oil Shale; 2007 Supplement, Vol. 24, p285
This paper describes the requirements for the generator's excitation system. Different parts of the excitation system are also presented. Two totally different types of excitation systems are installed in generators of both Eesti and Balti power plants. The one -- fast static excitation system...
- Power Flow Modelling of a Self-excited Induction Generator.
Kulworawanichpong, T.; Sangsarawut, P. // World Congress on Engineering 2007 (Volume 1); 2007, p378
This paper presents power flow models of a self-excited induction generator. These models are used for steady-state power flow calculation in electric power systems in which a generating plant driven by renewable energy sources, such as wind energy, is connected to partially serve loads.?? This...
- Doubly Fed Induction Generator Analysis Through Wavelet Technique.
Jha, Bhola; Rao, K. Ram Mohan // Journal of Engineering Science & Technology Review; 2009, Vol. 2 Issue 1, p63
Because of the intermittent nature of wind, its integration to the power system is still promising with respect to power quality and stability. For the large penetration of wind energy, this paper using an embedded time-frequency localization features in wavelet, provides deep insight to the...
- APPLICATION OF WAVELET TRANSFORMS FOR ALTERNATOR STATOR FAULT LOCATION AND PROTECTION.
KUMAR, M. NARENDRA; CHANDRA, K. ANIL // Journal of Theoretical & Applied Information Technology; 2010, Vol. 16 Issue 1/2, p77
This paper presents the novel approach in protection and detection techniques of Alternator stator winding from the earth faults which are simulated between 2% to 10% distance point from the alternator neutral, since the impedence at that distance is very high we can not detect or protect by...
KUMAR, M. NARENDRA; CHANDRA, K. ANIL // American Heritage Student Science Dictionary; 2009, p11
A definition of the term "alternator" is presented. Alternator is an electric generator that produces alternating current. The current reverses direction, back and forth, because the generator's coiled wire rotates rapidly within the magnetic field created by its two magnets, causing the charge...
- System frequency regulation investigation in doubly fed induction generator (DFIG).
XUE YINGCHENG; TAI NENGLING // WSEAS Transactions on Power Systems; Jan2012, Vol. 7 Issue 1, p18
The conventional decoupling control in the variable-speed doubly fed wind turbines has little support to the system frequency. The characteristics of doubly fed induction generator (DFIG) wind turbines and conventional plant are compared. The contributions of DFIG to system inertial response and...
- Field Orientation Control of a Wind Driven DFIG Connected to the Grid.
MOSSA, MAHMOUD A. // WSEAS Transactions on Power Systems; Oct2012, Vol. 7 Issue 4, p182
This paper aims to develop a method of field orientation scheme for controlling both active and reactive powers of a DFIG (double fed induction generator) driven by a wind turbine. The controlled system consists of a wind turbine that drives a DFIG connected to the utility grid through AC-DC-AC...
- Troubleshooting electrical alternators.
MOSSA, MAHMOUD A. // Fleet Equipment; May2009, Vol. 35 Issue 5, p9
The article offers tips in troubleshooting electrical alternators. It is helpful to test first the batteries before installing the alternator. Wire and battery cables should be inspected to ensure that are tight and free of corrosion. The fan and pulley should also be inspected so that the...
- ADD AN AMMETER.
Banse, Tim // MotorBoating; Aug2006, Vol. 198 Issue 2, p76
The article offers advice on the significance of installing an ammeter to motorboats. Ammeter measures how much current is being used by operating electrical equipment such as stereo, running lights, cabin lights, etc. It also indicates how much charging current is being generated by a...
- Optimization of ultrasonic welding parameters for copper to copper joints using design of experiments.
Elangovan, Sooriyamoorthy; Prakasan, K.; Jaiganesh, V. // International Journal of Advanced Manufacturing Technology; Nov2010, Vol. 51 Issue 1-4, p163
Ultrasonic welding is a solid-state joining process that produces joints by the application of high-frequency vibratory energy in the work pieces held together under pressure without melting. In electronic and automotive applications, copper wires are connected to the equipment...
- BE A BATTERY SMARTY!
Elangovan, Sooriyamoorthy; Prakasan, K.; Jaiganesh, V. // PS: Preventive Maintenance Monthly; Aug2003, Issue 609, p43
Batteries of the diesel engine generator set (DEGS) on AN/TSC-154 secure mobile anti-jam reliable tactical terminal (SMART-T) can give trouble while trying to jump start the engine. Soldiers have been seen using jumper cables in an effort to bring dead DEGS batteries to life. If batteries are...
- Class 8 alternator.
Elangovan, Sooriyamoorthy; Prakasan, K.; Jaiganesh, V. // Commercial Carrier Journal; Jul2005, Vol. 162 Issue 7, p78
Evaluates the Class 8 high-output alternator from Mitsubishi Electric. Functions of the alternator; Remarks given by the company about the alternator.
- Alternator takes the heat.
Elangovan, Sooriyamoorthy; Prakasan, K.; Jaiganesh, V. // Commercial Carrier Journal; Oct2007, Vol. 164 Issue 10, p33
The article evaluates the heavy-duty Long Haul Alternator from Bosch.
- Rougher, tougher alternators.
Elangovan, Sooriyamoorthy; Prakasan, K.; Jaiganesh, V. // Fleet Owner; Feb2005, Vol. 100 Issue 2, p56
This article reports that the firm Delco Remy has introduced several enhanced heavy-duty brushless type alternators for the commercial truck and transit bus market that is says are more durable and reliable. Featuring Delco Remy's new Maximum Cooling Technology design, the alternators have dual...
Elangovan, Sooriyamoorthy; Prakasan, K.; Jaiganesh, V. // Aftermarket Business; Jun2004, Vol. 114 Issue 6, p32
Presents the survey results of the 8th Annual U.S. Consumer Attitude Survey Study for the automotive aftermarket category of alternators/starters. Buying habits; Reason for the purchase; Alternative user of the product; Source of the purchase; Influence of advertising on product purchase; Source...
- The numbers game.
Hunt, James // European Power News; Jul2006, Vol. 31 Issue 5, p11
The article reports on the growth of genset manufacturers in Europe with alternators a key area in the product development arena. Gensets comprising engines, fuel, cooling and exhaust systems, alternators, electrical systems and beds/enclosures are being provided in greater numbers. Genset...
- How to Care for Your Alternator.
Faulkner, Jimmy // Fire Chief Expert Blog; 6/11/2012, p1
The article discusses the maintenance for an alternator. It notes that load-rated alternators is the life blood of electrical systems on any emergency apparatus. It elaborates on determining the specific alternator needed for a specific job by creating a load chart of electrical devices that...