alternator
SRM design for starter‐ alternator system
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This paper deals with the design of starter- alternator system integrated to a car flywheel based upon SRM technology. We discuss the feasibility of this application by comparing four different structures of SRM. We particularly underscore the effect of the pole number in
Extracting more power from the Lundell car alternator
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Due to the increasing power demands in automotive applications, the conventional power generator (Lundell alternator ) is rapidly reaching its limits. This paper examines an approach that allows substantial increases in the output power and efficiency of automotive
Dynamic simulation of a free-piston linear alternator in modelica
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This paper presents the modeling and simulation of a novel development of a free-piston engine in Modelica. The investigated concept is a combination of a combustion process and a linear alternator designed to provide clean, efficient energy in a compact engine. To study
Homogeneous charge compression ignition free piston linear alternator
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An experimental and theoretical investigation of a homogeneous charge compression ignition(HCCI) free piston powered linear alternator has been conducted to determine if improvements can be made in the thermal and conversion efficiencies of modern electrical
Fault diagnosis in automotive alternator system utilizing adaptive threshold method
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In this paper, an observer-based adaptive threshold is developed as part of a fault diagnosis scheme to detect and isolate commonly occurring faults in a vehicle alternator system. Since the mathematical model of the alternator subsystem is quite involved and highly nonlinear;
Performance characteristics of 15 kVA homopolar inductor alternator for 400 Hz Brayton-cycle space-power system
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The measured performance of a 15 kilovolt ampere homopolar inductor alternator is presented and compared with design goals. Test results include alternator saturation, voltage unbalance, harmonic analysis, short circuits, machine reactances, and time
Compulsator A High Power Compensated Pulsed Alternator
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The Center for Electromechanics (CEM) of The University of Texas at Austin has proposed a new pulsed power supply utilizing inertial energy storage as a possible replacement for large capacitor banks. The compensated pulsed alternator , or compulsator, overcomes
Voltage distortion effects of SNAP-8 ALTERNATOR speed controller and alternator performance results
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The results of the SNAP-8 alternator tests that were performed at the Lewis Research Center are presented in this report. This alternator is rated 80 kilovoltamperes at a power factor range of 0.75 (lagging) to 1.0, 120/208 volts, 400 hertz, and 12 000 rpm. Loads
Spectral study on the voltage waveform of claw pole automotive alternator
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An increased number of vehicle functions necessitated by legislation and customer expectations have introduced many electronic control systems and electrically driven units in vehicles. The drastic increase in the non linear loads associated with the introduction of new
The diagnostic of technical condition of turbine engines bearing by means of method of alternator frequency modulation.
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The paper has been intended to discuss an application of a diagnostic method based on measurements and analyses of frequency modulation. The method has been developed at Instytut Techniczny Wojsk Lotniczych ITWL (Air Force Institute of Technology, Warszawa
Investigation of the homopolar inductor alternator for automotive applications
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Increased power consumption and new standards for fuel consumption in automobiles have led to the need for increases in power ratings and efficiency of alternators. To address this need, the MIT/Industry Consortium on Advanced Automotive Electrical and Electronic
An IPM machine with segmented magnet rotor for integrated starter alternator
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Ever decreasing fuel source and concern about air pollution by emission of carbon exhaust of car engine make it necessary to develop future automobiles more energy efficient which is forcing the industry to convert many mechanically driven parts to electrically driven ones
Inverterless high power interior permanent magnet automotive alternator
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This paper describes a high power brushless interior permanent magnet (PM) automotive alternator which does not use an inverter. The inverterless alternator is designed with a high back-emf voltage and high reactance, and thus operates as a constant current source
Experimental evaluation of the free piston engine linear alternator (FPLA)
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This report describes the experimental evaluation of a prototype free piston engine linear alternator (FPLA) system developed at Sandia National Laboratories. The opposed piston design wa developed to investigate its potential for use in hybrid electric vehicles (HEVs)
Design and construction of an armature for an alternator with a superconducting field winding.
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DESIGN AND CÜK STRUCTI J. OF AN ARATURE 3 OR AI AL PERATOR i I. Ti A SUPERCONDUC lIG FIELD INDILIG by James L. Kirtley Jr. Submitted to the Department of Electrical Engineering on August 1 197 in partial fulfillment of the requirements for the degree of Doctor of Philosophy
Thermal analysis of Stirling engine to power automotive alternator using heat from exhaust gases
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This paper investigates the development of small scale beta type Stirling engine to recover the exhaust heat from the main engine and to drive the alternator (decouple it from the main engine), thus providing the required electrical power for onboard devices. The ideal
Study of electromagnetic field in claw-poles alternator
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The paper presents the tridimensional analysis of electromagnetic field of an claw poles alternator , in whose construction has been used non-magnetic material, such aluminum, that form the rings in the rotors structure. This structure aims to establish lower levels of
Fatigue damage assessment of alternator fans by EBSD
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Components of new car alternators are subjected fatigue damage due to the start-stop cycles. Predicting their fatigue life still requires needs an experimental validation. Hence, identification of both monotonic and cyclic behaviour is required to integrate the right values
Analytic modeling of automotive claw-pole alternator for design and constrained optimization
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Most of car alternators are claw-pole synchronous machines with poor efficiency. A Claw- pole alternator computer design strategy is presented in this paper. First, a model based on magnetic equivalent circuit and first harmonic electric scheme is established. Then, initial
Experimental evaluation of a voltage regulator-exciter for a 15 kilovolt-ampere Brayton cycle alternator
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ABSTRACT A voltage regulator-exciter for a 15 kVA. 120/208 volts, 400 hertz alternator was experimentally evaluated. regulator-exciter on the alternator performance. voltage regulator- exciter output capacity, its regulating capability, its effect on alternator waveshape, and its
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