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Saturday, May 2, 2020 | History

2 edition of A 3-D magnetic analysis of a Stirling convertor linear alternator under load found in the catalog.

A 3-D magnetic analysis of a Stirling convertor linear alternator under load

A 3-D magnetic analysis of a Stirling convertor linear alternator under load

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  • 34 Currently reading

Published by National Aeronautics and Space Administration, Glenn Research Center, Available from NASA Center for Aerospace Information in [Cleveland, Ohio], Hanover, MD .
Written in English

    Subjects:
  • Linear alternators.,
  • Magnetostatics.,
  • Loads (Forces).,
  • Stirling cycle.,
  • Finite element method.,
  • Magnetic moments.,
  • Magnetic flux.

  • Edition Notes

    Other titlesThree D magnetic analysis of a Stirling convertor linear alternator under load.
    StatementSteven M. Geng ... [et al.].
    Series[NASA technical memorandum] -- NASA/TM-2001-211084., NASA technical memorandum -- 211084.
    ContributionsNASA Glenn Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18174293M

    1, linear generator products are offered for sale by suppliers on , of which magnetic materials accounts for 13%, sensors accounts for 3%, and alternative energy generators accounts for 2%. A wide variety of linear generator options are available to you, such as wind power generator. Of course, the number of magnets used depends upon the number of poles in the motor. A rpm motor would have 2 poles, rpm 4 poles, and 6 poles. Voltage is dependent upon the speed at which the magnetic field changes, so the more poles, the better candidate the motor would be for a low rpm alternator. Flat-type permanent magnet linear alternator: A suitable device for a free piston linear alternator. Design and performance prediction of miniaturized Stirling power generators Abstract - This work reports a theoretical study of the dynamic behavior of a beta cinematic Stirling engine (BCSE) coupled with a synchronous permanent magnet linear. Design study of a 15 kW free-piston Stirling engine-linear alternator for dispersed solar electric power systems. by G. R. Dochat,H. S. Chen,S. Bhate,T Marusak. Thanks for Sharing! You submitted the following rating and review. We'll publish them .


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A 3-D magnetic analysis of a Stirling convertor linear alternator under load Download PDF EPUB FB2

A 3-D Magnetic Analysis of a Stirling Convertor Linear Alternator Under Load Steven M. Geng and Gene E. Schwarze Glenn Research Center, Cleveland, Ohio Janis M. Niedra QSS Group, Inc., Brook Park, Ohio Timothy F. Regan Sest, hTc., Middleburg Heights, Ohio Prepared for the 36th Intersociety Energy Conversion Engineering Conference.

the Stirling convertor for space power applications is the development of a lightweight and highly efficient linear alternator. This paper presents a 3-D finite element method (FEM) approach for evaluating Stirling convertor linear alternators.

Preliminary correlations with open-circuit voltage measurements provide an encouraging level of. Get this from a library. A 3-D magnetic A 3-D magnetic analysis of a Stirling convertor linear alternator under load book of a Stirling convertor linear alternator under load. [NASA Glenn Research Center.;].

This paper presents a 3-dimensional finite element method (FEM) approach for evaluating Stirling convertor linear alternators. The model extends a magnetostatic analysis previously reported at the. Of critical importance to the successful development of the Stirling convertor for space power applications is the development of a lightweight and highly efficient linear alternator.

This paper presents a 3-D finite element method (FEM) approach for evaluating Stirling convertor linear. This paper presents a 3-dimensional finite element method (FEM) approach for evaluating Stirling convertor linear alternators.

The model extends a magnetostatic analysis previously reported at the 35th Intersociety Energy Conversion Engineering Conference (IECEC) to include the effects of the load current. They are (1) the Stirling Power Convertor with its linear alternator, (2) the power switching and control electronics to convert the 90 V, 80 Hz alternator output to DC for the use of the.

BibTeX @MISC{Geng01nasa/, author = {Steven M. Geng and Gene E. Schwarze and Janis M. Niedra and Timothy E Regan}, title = {NASA / TM IEC ECCT A 3-D Magnetic Analysis of a Stirling Convertor Linear Alternator Under Load}, year = {}}.

The U.S. Department of Energy (DOE), in conjunction with NASA John H. Glenn Research Center and Stirling Technology Company, are currently developing a Stirling convertor for a Stirling Radioisotope Generator (SRG).

NASA Headquarters and DOE have identified the SRG for potential use as an advanced spacecraft power system for future NASA Cited by: Most free piston Stirling engines that use a linear alter-nator are relatively low power levels, and therefore use only a single phase.

Two- and three-phase power gen-eration is possible in a linear generator, but will not be covered in this context. Moving Magnet LA’s: Most Stirling LA’s are moving permanent magnet type, since this configura. NASA / TM IEC ECCT A 3-D Magnetic Analysis of a Stirling Convertor Linear Alternator Under Load By Steven M.

Geng, Gene E. Schwarze, Janis M. Niedra and Timothy E Regan Abstract. A simplified layout of the ASC is shown below. The key technologies in this convertor that enable high efficiency and low mass are the hydrostatic gas bearings, a moving-magnet linear alternator, high-frequency operation, high-temperature hot end A 3-D magnetic analysis of a Stirling convertor linear alternator under load book and fabrication processes, and high-temperature, high-porosity regenerators.

A 3-D Magnetic Analysis of Stirling Convertor Linear Alternator Under Load free download ABSTRACT The NASA Glenn Research Center (GRC), the Department of Energy (DOE), and the Stirling Technology Company (STC) are developing Stirling convertors for Stirling Radioisotope Power Systems (SRPS) to provide electrical power for future NASA deep.

Historical development of the free-piston linear alternators. General Motors This picture looks very familiar, showing an opposed poston engine with an integrated linear alternator. 50 years ago, a patent for this principle was already filed in by Stirling A. Colgate. The work of GM is based on the Pescara-SIGMA free-piston engine and the history A 3-D magnetic analysis of a Stirling convertor linear alternator under load book GM ordered the.

Above figure shows the comparison of field analysis between the previous model (2-Air-Gaps) and the new model (1-Air-Gap).

The new model has achieved the same level of performance as shown in right figure with only a half mass of magnets by reducing the magnetic. The SCORE linear alternator has a target cost of £4 with a magnet assembly target of £ for a W unit.

By utilising NdFeB permanent magnets in a Halbach array, considerable functional improvements can be made whilst preserving the low cost mass-produced manufacturing the time of writing, a magnet supplier has estimated the price of NdFeB in very Cited by:   stirling engine WITH linear alternator GENERATOR x3 magnet coils powered by a large.

A 3-D magnetic analysis of a Stirling convertor linear alternator under load A CFD analysis of hydrogen leakage during on-pad purge in the ORION/ARES I shared volume A CFD-based study of the feasibility of adapting an erosion burner rig for examining the effect of CMAS deposition/corrosion on environmental barrier coatings.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Calibration and comparison of the NASA Lewis free-piston Stirling engine model predictions with RE RE free-piston Stirling engine sensitivity test results [microform] / Jeffrey G.

Schreiber, Steven A 3-D magnetic analysis of a Stirling convertor linear alternator under load [microform] / Steven M. Gen. The fundamentals of a permanent magnet linear synchronous generator are closely related to magnetic field and Maxwell equations.

Three of the four equations are related to permanent magnet linear synchronous generators by Ampere’s Law: r⇥H = J + @D @t. () Here J is the volume current density in the circuit. The second term (@D/@t). A 3-D magnetic analysis of a linear alternator for a Stirling power system.

Steven Geng, Gene Schwarze and; Long-term durability analysis of a ,+ hr Stirling power convertor heater head.

Paul Bartolotta, Randy Bowman, Assessment of the free-piston Stirling convertor as a long life power convertor for space. This is ever first Pakistani Free Piston Stirling Linear Alternator A Project for Lahore University Mechanical Engg Students.

Built by Ishtiaq Ahmed Shah. Nick (Real Scientist). Permanent Magnet Linear Alternator Magnetic Field Analysis Abstract Permanent magnet linear alternators are energy converting devices that have been under research and development for years.

This type of alternators have advantages of high efficiency and no need of liner motion to rotation converting, when the driving force is in linear.

Figure 2 shows the same rotary linear generator from figure 1, but now with a mechanical slanted bearing 16 supporting the slanted magnetic bearing in case the magnetic bearing is not accurate enough.

On the shaft 6 is a slanted bearing 16 accommodating a non-rotating ring 17 connected via a strong pin 9 to a ball 8 in a stationary embedment ball is able to rotate around its. The ATR can be used to test W class linear alternators, and is a variable stroke (up to 13mm) and variable frequency (up to Hz) linear dynamometer.

The performance of the alternator being tested is typically mapped at steady-state conditions over a range of temperatures, mover amplitudes, and linear alternator loads. was to build a permanent magnet linear synchronous generator prototype for wave energy conversion.

The electromagnetic analysis was done by the finite element method. With this analysis, the excitation system was defined and the cogging-forces were calculated. In this project, a double-sided stator was usedFile Size: KB. CAD case study, CAD case studies.

"A 3-D Magnetic Analysis of a Linear Alternator for a Stirling Power System," in Proceedings from the 35th Intersociety Energy Conversion Engineering Conference, Las Vegas, NV, AIAA, NASA TM,and "A 3-D Magnetic Analysis of a Stirling Convertor Linear Alternator Under Load," in.

UNDERSTANDING NONLINEAR LOADS AND GENERATOR SET INTERACTION Gregory M. Williams, P.E. Caterpillar Inc. () INTRODUCTION Many electrical power applications require continuous and high quality power.

Standby diesel-electric generating sets are integral parts of the solution. Standby genset sizing requires an understanding of theFile Size: 41KB.

A linear alternator is most commonly used to convert reciprocating (i.e. back-and-forth) motion directly into electrical energy. Because of this ability, this type of permanent magnet alternator is suitable for tidal action and production of electricity from that motion.

Theory. When a magnet moves in relation to an electromagnetic coil, this changes the magnetic flux passing through the coil, and thus induces the flow of an electric current, which can be used to do work.A linear alternator is most commonly used to convert back-and-forth motion directly into electrical energy.

This short-cut eliminates the need for a crank or linkage that would. We proposed the flat-type permanent magnet linear alternator (LA) for free piston linear alternators (FPLAs) instead of the tubular one. Using the finite element method (FEM), we compare these two kinds of LAs. The FEM result shows that the flat-type permanent magnet LA has higher efficiency and larger output specific power than the tubular one, Cited by: An alternator is an engine part that transforms moving energy into electric energy in the form of a changing current.

Typically, an alternator uses a rotating magnetic field with a non-moving armature. However, occasionally, a revolving armature is used with a non-moving magnetic field; Else, a linear alternator is used. Generator From Motor.

Very we used two 12 Volts toy/ Old Tap-recorder Motors(From trash). One as a Motor (Turbne) and other one as a Generator/alternator. A whitle LED is coneccted as a Load to the Generator That this is seems to be a Motor-Generator Set, but No.

Because Motor-Generator Set (AC. If the racing class is defined as "Formula 1K" then you are allowed a maximum of Watts of input power.

A Permanent Magnet would not work as well under the fixed input power concept. (this all fits together in something much larger that I'm working on) If I ran the alternator at 48 volts and 40 amps that translates to watts of input power. This paper investigates the performance analysis and mathematical modeling of a staggered-tooth transverse-flux permanent magnet linear synchronous machine (STTF-PMLSM), which is characterized by simple structure and low flux leakage.

Firstly, the structure advantages and operation principle of the STTF-PMLSM are introduced, and a simplified one phase model is Cited by: 4. Exploring EMG-Torque relationship in the quadriceps femoris and the hamstring muscle group and muscle activity duringthe sit-to-stand movement in female subjects a.

Experiment 10 The Alternator Under Load OBJECTIVE To determine the voltage regulation characteristics of the alternator with resistive, capacitive and inductive loading.

To observe the effect of unbalanced loads on the output voltage. DISCUSSION The output voltage of an alternator depends essentially upon the total flux in the air-gap.

At no-load, this flux is. Interesed in practical maximum efficiency of linear alternators. Suppose an object with a permanent magnetic attached moves along a linear track with a constant velocity, such that its kinetic energy is 1 joule. The object "collides" with a linear alternator or generator, such that the magnet interacts with the coils in the alternator.

An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature. Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used.

In principle, any AC electrical generator can be called. Pictured above is such a Permanent Magnet Generator (used pdf Dick Strawbridge in BBC2’s It’s Not Easy Being Pdf on his Waterwheel) available in 12, 24, 36, and 48 Volt g wastes energy and generates nuisance noise, so PM-Generators for wind (and waterwheel etc) applications are designed to produce high power outputs at low RPM.= Distribution factor or Breadth factor Alternator If there are N ph turns per phase, then (Synchronous Generator) E ph = f N ph Φ (Volts) () This gives the emf generated per phase in an Alternator and is similar to that giving theFile Size: KB.

If the Permanent Magnet AC alternator is satisfying ebook current requirement of the load then a tiny increase in RPM ebook increase the output voltage a tiny amount. There was no reply to this question for several days so I did my best to cover it quickly.

IMO you should have posted your answer days ago and not left an unanswered post hanging.