Baseline Geometries

Designers commonly devise a figure of merit -- a raw number calculated froiri parameter values combined in such a way as to guide the designers in their approach to optimization of the device or system in question. Such figures of merit can be applied legitimately in comparisons among several variants, if they all have the same generic character or basis. In the following discussion, the ratio of magnetic lift to magnetic drag (L D) to the mass of aluminum per unit length of guideway has proven...

Oto

Fig.7 The vertical acceleration of each nodule on the rail with loose bolts A Dynamic Computer Simulation of a High Speed Maglev Vehicle Advanced Programs, Hughes Aircraft Company, Fullerton, California Abstract - The Maglev Performance Simulation (MPS) program is a computer simulation tool which provides performance assessment of high speed magnetically levitated transportation systems. Using MPS, a simulated maglev vehicle is made to traverse a hypothetical route. The performance of the...

References

Hull, H. T. Coffey, J. G. Daley, and R. F. Giese, Maglev vehicles and superconductor technology integration of high-speed ground transportation into the air travel system, Argonne National Laboratory Report ANUC.NSV-67, Argonne, IL, 1989. 21 I. Nair, M. G. Morgan, and W. K. Florig, Biological effects of power frequency electric and magnetic fields -- background paper, Office of Technology Assessment Report 0TA-BP-E-53, Washington, D. C. U. S. Govt. Printing...

80

Simulation results of a start-up procedure Fig. 5. Simulation results of a start-up procedure numerical evaluation of the derivatives of the magnetic flux with respect to all the state variables. The introduced state variables are the vertical, the lateral and the rotational positions of the magnet unit, the corresponding velocities and the control currents. They appear in the differential equations with inhomogeneous constants. The simulation results of a start-up procedure are shown...

Introduction

The Federal Government organized the National Maglev Initiative (NMI) to determine whether it should actively encourage maglev investment. As part of this effort, the NMI awarded four System Concept Definition (SCD) contracts to teams led by Bechtel Corp., Foster-Miller, Inc., Grumman Aerospace Corp. and Magneplane International, Inc. These S2M, 10-month contracts resulted in very thorough descriptions and analyses of four different maglev concepts. The NMI's Government Maglev System Assessment...

03

Conclusions and Recommendations 1) The MPW maglev concept hypothesized by Kozoriz is a speculation based on the magnetic attraction and repulsion force vs levitation distance characteristics observed experimentally, with a classic magnetic physics laboratory scale apparatus consisting of two superconducting coils in a coaxial configuration, fig. 1. 2) Furthermore, the MPW linear motor acceleration and deceleration concepts were also hypothesized from the magnetic force characteristics...

T I

Fig. 2 A three-phue Voluge Source Inverter. phase bridges in series, as described in 20 . We can carry the series converter idea one step further by using a separate H-bridge for each phase, and putting all the phases in series. A series-connected design makes it feasible to take power directly from a medium voltage dc distribution bus through a chopper, reducing transformer and distribution line costs. A degree of fault tolerance may also be obtained by this approach. For LSM designs where the...

Magnetuf Levitation In Civil Construction

The Environmental Impact of MAGLEV A Comparative Study Mark C McClintock Rochester, New York Abstract - The rising economic and environmental cost of today's existing transportation infrastructure has necessitated the development of alternative transportation means. This study has been conducted to evaluate the environmental impact of a magnetic levitation system. It was found that maglev potentially operates at energy intensities less than that of airplanes or automobiles. Further reduction in...

Pcxes

Position of Magnet Poles on Guideway Rail (LSM Stator) tc Provide Stability Against Lateral Motion. (Grumman) Due to the high magnetic intensities in the poles and guideway, Vanadium-Permendur and M43 steel are proposed by Grumman for use in the poles and rails, respectively. In our calculations, only M43 steel was used. The forces normal to the faces of the poles calculated by Grumman and ANL are shown in Figure 9 as functions of the current in the trim coils with the baseline...

Info

(e) Energy Demand for One Vehicle The energy consumption for one vehicle to traverse the route in the forward direction from Terminal 1 to Terminal 4 is given in Table V. The energy required using the standing ride comfort values for acceleration and braking is indicated in the top row. The succeeding rows of the table show the energy requirements as the acceleration and braking values are reduced. The energy reduction from using an acceleration limit of 0.2g's and a braking limit of 0.2g's to...

Maglev Screening Geometry

w> MPH Operation Minimum Curve Radius Spiral Length Minimum Tangent Between Spirals 250 MPH Operation Minimum Curve Radius Spiral Length Minimum Tangent Between Spirals 200 MPH operation Minimum Curve Radius Spiral Length Minimum Tangent Between Spirals SIMULATION SUMMARY SITE 1 (NEWBURGH TO SAUGERTIES) 50 MILE ALIGNMENT

The Magneplane Configuration

The Magneplane maglev configuration relies upon a trough shaped guideway supporting a vehicle with saddle shaped arrays of levitation and propulsion magnets as shown in Fig. 1. The levitation magnets are tilted 35 degrees with respect to the horizontal plane. They provide a center of lift in the vehicle above the center of mass so that the suspension is naturally stable. This configuration also couples lateral and vertical motions. The Magneplane system uses a . 15m (6) levitation gap lowering...

Lclsm

Foster-Miller's LCLSM could become a significant innovation in vehicle propulsion. Its advantages include high overall efficiency (91 as seen at electrical supply), significant degraded mode capability, and use for power transfer. Its principal risk is that solid-state inverters are at present too expensive for the LCLSM to be economical. Foster-Miller has argued that the large number of inverters needed (about 2,400 km) v ill enable mass production to reduce their cost by a factor of 10. This...

Converter Station

R, jX( I R, JX, A s jyrm J-A sAr7 01 Fig. 10. Electrical Model for Fig. 9 Fig. 10 shows the circuit element details for modeling the active and inactive portions of the LSM block length, as well as the feeder cables from the converter station. From Fig. 10, the inactive portion of the LSM block is modeled as an extension to the feeder cable distribution with values Rt RL(L-lv) Land Xt XL (L-1V) L. We will define RL and jXL as the resistance and reactance of entire LSM block length where jXL is...

Five Degree of Freedom Analysis of the Grumman Superconducting Electromagnetic Maglev Vehicle Control and Guideway

Gran Director, Advanced Concepts, Grumman Corporation, Bethpage, NY 11714 Maglev Program Manager, Grumman Aerospace and Electronics Group Abstract - This paper describes the control system and the five degree of freedom (5 DOF - heave, sway, pitch, yaw, and rol ) model of the Grumman Maglev Vehicle described in 1 . The simulation model has 12 magnet modules (4 magnets per module) mounted along the vehicle canted at the appropriate angle to give both lateral and lift forces acting...

Flux Canceling Guidance

The suspension system provides some guidance, but for the design described above the guidance force is only about 10 of the suspension force. It would be possible to design a flux canceling suspension system that produced greater guidance force, but there is a disadvantage of making the guidance force proportional to suspension force. In the interest of increasing efficiency and minimizing interaction between suspension and guidance we developed a separate guidance system. The guidance system...

10

Fig. 1 Outside view of the superconducting magnet Fig. 1 Outside view of the superconducting magnet Fig.2 Illustration of the superconducting magnet Fig.2 Illustration of the superconducting magnet impregnated with epoxy resin to suppress the micro movement of the superconducting wire. The impregnated superconducting coil is fixed in the inner vessel made of stainless steel. Many spacers along- the coil axis keep a distance between the inner vessel and superconducting coil. Liquid helium...

2 Safety Assessment Of Relevant Subsystems And Components

In the past four years TUV's experts have successfully completed the safety assessment of relevant TVE subsystems and components which - on the threshold of the first maglev demonstration project - may be regarded as prototypes for a revenue application of maglev. These items comprise a complete new vehicle (two-car trainset), the TR 07, the OCS (Operational Control System) to operate the TR 07, guideway components and the operational safety of the entire system. 2.1 The Maglev Vehicle TR 07...

Methods Of Calculation

We analyzed the magnetic forces exerted on a coil carrying a constant current moving at constant speed near a conducting medium utilizing three distinct computational tools. These tools can be characterized by the approximations used in modelling the currents induced in the passive conductors. They are (1) a flat sheet of finite thickness and infinite extent (2) a thin sheet of finite extent and (3) a filamentary model of precisely defined geometry Manuscript received April IS, 1993. This work...

Lsm Equivalent Circuit

With reference tc one section of the armature winding and to the n-th harmonic, Fig.4 gives the LSM single-phase equivalent circuit. It is En LSM counter e.m.f. Rn,Ln armature resistance and inductance (included the series impedance of the connections) Un converter applied voltage In armature current Given a reference system (x,y,z) fixed to the field coils, X,Y Yo < 9t,Z AZ are the coordinates of a generic armature coil (Fig.2). The mutual inductance per polar pitch between the field winding...

40

Daewoo's Maglev vehicle Daewoo's maglev program is reported separately in this conference(PS 1 2). A short remark may be made here. Starting from scratch, Daewoo developed a full size vehicle in shortest time( 2 Year) and demonstrated successfully on 100m track. This vehicle is shown in Figure 3. Eventhough Korean maglev teams made remarkable progress in short time, major portion of the work remains for the future. The problem areas and future tasks are Power Conversion Equipments The EMS LIM...

Onvehicle Power Generation at all Speeds for Electromagnetic Maglev Concept

Grumman Corporation, Bethpage, New York Abstract*' The electromagnetic suspension (EMS) maglev utilizes attraction force between two electromagnets for generating levitating force. The Grumman EMS maglev levitation magnets 1 are iron-cored superconductive type. A significant amount of power (150 kW) is needed on vehicle for powering superconducting magnets and their cooling system, for airconditioning and heating systems, and for lighting. This power must be transferred to vehicle magnetically...

Ml100

ML100 which was the first experimental small vehicle for superconducting Maglev system debuted in 1972 (Fig.l). It had 4 seats. In 1972 ML100 succeeded in levitated running at a speed of 60 km h on the Experimental Short Test Track in J.N.R.'s Kunitachi Laboratory. In 1975 ML100A succeeded in levitated perfect non-conducted running. The results of repeated experiments by ML100 series made us confident of the possibility of 500 km h running. That was the first step in Maglev system.

Block Diagram Of Maintenance System

Compressor Maintenance Block Diagram

Ooo oo oooo ooo oooooooo a m o o Fig. 4 No Radii Less Than 3000 Meters Maglev Automated Preventive Maintenance System Joseph S. Ng Arthur L. Harris Maurice E. Amoon Product Support Division Aerospace and Defense Sector Hughes Aircraft Company, FuIIcrton, CA 92634 Abstract - When maglev technology is implemented, it must not only be operationally efficient and safe, but it must also be reliable and cost competitive to operate and maintain. Unexpected failures and high maintenance costs must be...

150

The guideway has several phases of propulsion windings, each carrying the same frequency current, but with currents phased such that there is a traveling magnetic field that moves at the same speed as the vehicle. A simplified winding diagram for a 3-phase motor is shown in Fig. 2. The wavelength X is the distance between equivalent points in the periodic magnetic wave, and is equal to twice the pole pitch, which is the distance between successive magnetic poles. The three phase currents are i...

Necessity Of Developing Maglev Train In China

The unreasonable structure of the transportation system in China is the main cause of crowded traffic and the difficulty to take trains or buses, whether looking at the traffic state in some railway district on the trunk lines or in the large cities. Passenger and freight transport should be separated, and special high-speed passenger transport railways should be constructed. The number of bicycle should be reduced in large cities. It is not realistic to drive a private car to go to work...

1

Dimensions, Configuration, and Currents of Magnets used at one end of Magneplane 140-Passenger Vehicle. A Mirror Image of these Magnets is Used at the Opposite End of the Vehicle.(Magneplane) Analytic models are available for calculating the magnetic lift and drag forces on magnets moving above an infinitely wide conducting ground plane. Analyses for single magnets have been given by Chilton and CoffeyJ5J and Reitz and Davis 6 . A similar analysis, by Lee and Menendez 7 , accounts...

Using Existing Infrastructure To Make Maglev Work In The United States

Gilcrease, Jr., P.E. May 20, 1993 Parsons Brinckerhoff Quade & Douglas, Inc. If maglev systems are to be commercially and economically viable, they will have to access the centers of major metropolitan areas. The focus of this study was to investigate the feasibility of using existing railroad rights-of-way to access center-city terminals, in one of three possible methods maglev vehicles traveling ower existing railroad tracks with the use of steel guide...

Dc 600 V

The height of the coulmn is Urn and the distance between columns is 1.2m. Two kinds of guide rail are used, one 4.8m long and the other 2.4m long. These are arranged in zig-zag formation. The mass produced method would probably entail an extrusion, a welded structure was used for the development track. The structure of the car body and end sections are mainly welded aluminium alloy covered with FRP. Three large boxes under the cabin contain the electrical equipments (converter, inverters and...

005 010 015 020 025 030 035

Fig. 6 - Static force-height characteristic. Fig. 7 - Undamped response for a vertical perturbation. Fig. 7 - Undamped response for a vertical perturbation. Fig. 8 shows the step response for the same perturbation when copper damping coils are placed at a distance d 0.10 m. As it is possible to see, the operation in constant current mode results in a lower settling time. The copper losses Ej (j-1,2,3,4) in the damping coils, during the transient in constant current mode, have been determined...

Chsst

HSST demonstrated its maglev operations at six expos (two International expos included), however, the operations were made at low speed due to limited track lengths available and the conditions were not enough for the complete system test. To be certified as the public transit system, HSST has to demonstrate its system performance for safety, reliability, economy, etc through the repeated runs on the test line with sufficient length, necessary curves and slopes. CHSST was founded in 1989 by...

Overview Of System Concepts

Table 1 lists physical characteristics of the six high-speed ground transportation (HSGT) concepts studied. TGV-A is a steel-wheel-on-rail technology optimized for high-speed operation (83 m s). It uses fixed-consist, non-tilting train sets powered by a.c. synchronous rotary traction motors. Roof-mounted pantographs collect power from an overhead catenary. Braking is by a combination of rheostatic brakes and axle-mounted disc brakes. The track consists of continuous-welded rail on concrete...

Conclusion

As a result of the reform and opening, the Chinese economy has developed quickly in the last 14 years. The passenger and freight traffic have increased year by year. The intense state of communication and transportation is quite out standing. It needs to find a new transport means to relax the heavy traffic loads in large cities or between large cities and their satellite towns. It is an effective measure to adopt the overhead maglev train, which can satisfy the passenger traffic demands of...

104

Frequency Response Plot of the Position to Gap Error Transfer Function for the Magnet Servo The transfer function (4) has the magnitude and phase plot shown in Fig. 3. As can be seen, the magnitude of the frequency response is damped to .707 and the bandwidth of the servo is 10 Hz (62.8 rad sec). These are the design parameters we used for the servo design previously discussed. The result of combining the servo transfer function with the frequency response from (3) is shown in Fig. 4....

Dynamics Stability and Control of Maglev Systems

Mulcahy, D. M. Rote, and H. T. Coffey Argonne National Laboratory, Argonne, Illinois 60439 Abstract - This paper presents an overview of the work on dynamics of maglev systems completed at Argonne during the last two years. Specifically, vehicle guideway interaction and ride quality, active and semiactive suspension control, and stability analysis are summarized. The dynamic response of maglev systems is important in several respects safety and ride quality,...

Maglev Track Department Of Civil Engineering

Die Betriebsleittechnik des TRANSRAPID in Magnetbahn TRANSRAPID, MVP Versuchs- und Planungsgesellschaft f r Magnetbahnsysteme mbH und TRANSRAPID International Gesellschaft f r Magnetbahnsysteme, Darmstadt 1989, p. 60 - 64, 2 Knigge, R. Systembeschreibung, Siemens AG, Technischer Bericht TB06 1991. 3 Siemens AG Lastenhefte Forschungsvorhaben BMFT TV 9223 B, Technische Berichte 1993. 4 Freitag, V. Betriebsleittechnik f r Magnetschnellbahnen in der Erprobung. Signal + Draht 84...

0455

2) Skin Friction Drag Coefficient Two different methods are used to predict the skin friction drag coefficient. The first is from Raymer 4 . This method allows for a wide variation of fuselage parameters including a choice of laminar, turbulent, or mixed boundary layer flow. The second method is from Roskam 5 . It is less flexible in its range of parameters and allows for only turbulent flow on the body. As a check of the compatibility of the methods, the analysis from Raymer was run for a...

3 The Restriction For Thrust Force Control

A LIM module of HSST is composed of three phased L'M coil and a pair of levitation magnet coils. Though each coil system is electrically independent, the normal force of LIM which acts across the air gap between magnetic cores and reaction plates interferes with the levitation force. Fig.2 shows the characteristic curve of thrust force and normal force vs. slip frequency of LIM. The thrust force reaches its maximum value when slip frequency equals to 5Hz. But the normal force at that slip...

Boundary Conditions

The computation of the Navier-Stokes flow over a Maglev vehicle is distinguished by the ground effect due to the small distance between the vehicle and the ground plane or rail upon which it rides. Both the air and the ground are stationary, and the vehicle is moving. As is typical in most CFD computations, the vehicle is stationary with the air moving relative to the vehicle. For the ground effect problem, the typical (hard surface) no-slip surface boundary conditions cannot be applied to the...

T

The Arrangement of Dashboard The magnet of the DMV system has two wirings which are connected in parallel Serial connection was tried but parallel connection proved to provide better control. The lifting and guiding forces of the magnet were simulated with a computer program, and after manufacturing a sample magnet, the forces were measured using a test bed Six load cells - four for lifting force, two for guiding force - were used to measure the forces of the magnet. Fig. 12. Overview...

Results

Navier-Stokes computations were carried out for both the simplified and the advanced configurations. In each case, the freestream Mach number was prescribed to be 0.40, corresponding to approximately 300 mph at sea level. Fig. 7 shows several views of the computed flow pattern about the simplified model. The flow is characterized by a vortex shed by the rather blunt nose of the vehicle. This vortex is caused by flow separation around the nose of the vehicle and is shed axially, running along...

Table Of Contents

Development of Maglev Transportation in Japan Present State and Future Prospects 1 Status Quo of Development of Super-conducting Magiev System in Japan 7 Syohiko Miyata, Kazuhisa Matsuda, and Mamoru Minemoto The Development of the Superconducting Maglev System 10 Kan-ichro Kaminishi, Akio Seki, and Hitoshi Tsuruga Outline of HSST-100 System and Test Line in Nagoya 16 High-Speed Magnetic Levitation Train Transrapid, Planning of the Development Program until 1995 and Prospects of Utilization in...

20 2530 35 40 U5 50

New Structure Electro-magnetic Guideway for Maglev Shunsuke Fujiwara, Kazuo Sawada Railway Technical Research Institute Hirotaka Natsuhara Japan Railway Construction Public Corporate Nobuhito Uchiyama Central Japan Railway Company Shigeya Oohama Mitsubishi Electric Corp. Superconductive Maglev aims to be a super speed transportation system, that speed conventional rail system can never attain. One of the reason of superconductive Maglev's super speed ability is the large clearance between...

2

Fig. 1 Equivalent Circuit of a Single SCM Interacting with a Null-Flux Coil Letting Is and v be the current and speed of the SCM, and M,i and MS2 be the mutual inductances between the SCM and the upper and lower loops of the null-flux coil, respectively, one can express e, and The voltage equation for the system is The three components of time-dependent magnciic forces fx, fy, fz existing between the moving SCM and the null-flux coil are (1) to (6) can only be solved step by step numerically...

Gps

Minimum 200 km h 300 km h 400 km h 500 km h The sinusoidal transition curves and superelevation ramps are of equal length. Minimum 200 km h 300 km h 400 km h 500 km h Crest m 500 5,145 11,575 20,575 32,150 Trough m 500 2,575 5,790 10,290 16,075 points for the determination No The specially developed computer program used to generate this space alignment, also has the ability to generate the sinusoidal forms for the transition elements in the planview and the clo-thoidal forms for the elevation...

Conference Committee

Howard T. Coffey Dr. John Harding Mr. Stu Kissinger Mr. Patrick Sutton Prof. Anthony R. Eastham Prof. Ji San Lian Mr. Dieter Rogg Mr. K. Kurian John Prof. Augusto Morini Prof. Eisuke Masada Dr. Yong-Joo Kim Prof. J.L. Mahtani Prof. Eugeny Yu Klimenkl Dr. Jianliang He Dr. Thomas Mulcahy Mr. Lawrence Blow U.S. Federal Railroad Administration U.S. Army Corps of Engineers U.S. Department of Energy Southwest Jiaotong University, People's Bharat Heavy Electricals...

Power Supply System for Superconducting Magnetic Lvitation System

Haruo Ikeda, Hisao Ohtsuki MAGLEV System Development Division, Railway Technical Research Institute, Tokyo, Japan Jun-ichi Kitano, Yutaka Osada Linear Express Development Division, Central Japan Railway Company, Tokyo, Japan Nobuo Katoh Toshiba Corp., Tokyo, Japan Naoki Morishima Mitsubishi Electric Corp., Hyogo, Japan Hidetoshi Aizawa Hitachi Ltd., Ibaraki, Japan Abstract - A development for the superconducting magnetic levitation system as a new high speed transportation has been progressing...

Acknowledgements

It is a pleasure to acknowledge the advice and cooperation of Dr. Larry Johnson and Dr. John Hull of Argonne National Laboratory who served with the co-chairmen as the Conference Organizing Committee. Ms. Laverne Franek served as Secretary of the Conference, and with the help of Ms. Christine McGhee and Ms. Carolyn Kowalski has patiently answered questions from participants, prepared materials mailed to each of you, and assembled this volume of proceedings. The conference program could not have...

39

Fig. 3 ISO acceleration plots for segment of hypothetical route. Fig. 3 ISO acceleration plots for segment of hypothetical route. Technology and Costing Considerations for Full Maglev System Development, As Derived from Bechtel's System Concept Definition Exercise Manager, Advanced Civil Systems, Research and Development, Bechtel Corporation P.O. Box 193965, San Francisco, California 94119-3965 The recent NMI-sponsored System Concept Definition exercise provided an opportunity to assess our...

Ac900a

Conversion type Cooling type Element Asynchronous PWM typed inverter Water cooling G TO thyrister 4,500V-3,000A 2S-1 P-4A full-bridge Many harmonics caused by PWM controller are contained in the output voltage of PWM inverter. To reduce the harmonics content, a filter is installed at the output of inverter as shown in Fig.3. The filter serves to suppress harmonics resonance occurring in feeding circuit in addition to reducing the harmonics. The output transformer for LSM drive, which is...

Michael J Siclari Gilbert Carpenter Robert Ende

Grumman Aerospace & Electronics Group Bethpage, New York 11714 Abstract - The revival of interest in the U.S. in highspeed rail technology has necessitated an increase in attention to the aerodynamics of high-speed ground vehicles. Maglev vehicles, in particular, present several unique aerodynamic problems due to their very high speeds ( 300 mph) and close proximity to a stationary rail or guideway. In conjunction with its System Concept Definition (SCD) study for the National Maglev...

Table

Relevant Physical Parameters for Example Maglev System t Wetted and cross-sectional area conventions are shown in Figure 4 * 22 taper recommended by (7) ** Included for bogie guideway interaction Dealing factor t Wetted and cross-sectional area conventions are shown in Figure 4 * 22 taper recommended by (7) ** Included for bogie guideway interaction Dealing factor B. Evaluation of Reynolds Number and Skin Friction Drag For the skin friction drag calculations, it is important, to determine how...

Lateral Restoring Force For Different Gaps But The Nominal Gap Field

0.5 1 1.5 2 2.5 3 3 5 OFFSET DISTANCE (cm) GAP 5cm Ar- GAP-3cm GAP 4cm GAP 2cm 0.5 1 1.5 2 2.5 3 3 5 OFFSET DISTANCE (cm) GAP 5cm Ar- GAP-3cm GAP 4cm GAP 2cm Figure 7 Lateral Restoring Force E. Stray Magnetic Field Level 3-D magnetic field calculations were performed to estimate stray field in the passenger compartment and the surrounding areas. The flux density levels below the seat are less than 1 G, which is very close to the ambient earth's field (0.5 G). On the nlatform. maono id levels do...

Rail Irregularity and Module Response in HSST100 System

Mituru Iwaya Engineering Department, HSST Corporation Abstract - This paper shows the relation between rail irregularities and magnet responses on rolling stock. The chosen irregularities can cover almost all the modes which can arise during practical operation of the vehicle. The test run data are also confirmed by theoretical study. The test run of the HSST-100 system in Nagoya was almost completed in 1992 1 . Among others, we have ac-cumlated a lot of data with regard to the relation between...

Maglev Performance Simulation

George Anagnostopoulos Volpe National Transportation Systems Center J. Edward Anderson J.E. Anderson Associates Frank L. Raposa F.L. Raposa Services Abstract - This paper summarizes the results of the development of a maglev simulation program for the performance evaluation of ground guided vehicles operating over a complex route such as a freeway. The program as developed has been tailored to evaluate maglev vehicles on a route termed the Severe Segment Test route developed by the National...

Guideway

Testllne length Girder structur Rail gauge Mln curve radii (horizontal) (vertical) Max Cant angle Max Gradient Switch 100 m (main line). 25 m (branch) 1000 m SIGNAL SYSTEM Train control Switch control Train Overrun Protection ATP (Automatic Train Protection) Relay Interlocking Pattern Belt (Signal Cable) ,7oo(mm) Pattern Belt (Signal Cable) ,7oo(mm) Fig.4 Cross section of guldeway (standard) Fig.4 Cross section of guldeway (standard)

94

Magneplane Vehicle Dynamics Simulation 101 Technology and Costing Considerations for Full Maglev System Development as Derived from BechteS's SCD Exercise 106 System Concept Definition of the Grumman Superconducting Electromagnetic Suspension (EMS) Maglev Design 111 M. Proise, L. Deutsch, R.J. Gran, R. Herbermann, S. Kalsi, and P. Shaw Maglev Cost and Performance Parametrics 119 Analysis of Maglev Corridors 125 Market and Energy Demand Analysis of a U.S. National Maglev System 131 Reducing...

Snow And Ice Removal

There are drain holes on both sides of the central stem. These take advantage of the heat available from the propulsion windings which can be used to melt ice. Snow is removed by a combination of low-speed snow removal equipment and special scoops on the passenger vehicles. After the guideway has been idle for some period of time, such as in the early morning, automated snow removal equipment will clear it for the passage of the first vehicle. As more snow falls, it will accumulate in the...

Alignment and Surveying of Magnetic Lvitation Train Guideways

Hans-J rgen Marx Wei ensteinstr. 70,4200 Oberhausen 11, Federal Republic of Germany Thyssen Industrie AG Henschel, Anzinger Str. 11, 8000 M nchen 80, Federal Republic of Germany Abstract - This report will detail the steps required for the alignment and surveying of a Transrapid application route. The system parameters which need to be considered during the planning of the route are listed and innovative solutions are presented to accomplish the stnn-gend requirements of the surveying process....

203

I Coils fur Power Generator Mounted on to the Pole Iron field amplitude at the poleface. This does not work well. For example at 20 mm gap, the levitation force increases for the same excitation level in the poles. Because the levitation torce level must remain unchanged, it is necessary to reduce the excitation proportionally which in turn reduces the airgap harmonic Field. After adjustment of excitation for the desired levitation force level, the 19th harmonic amplitude is comparable to...

Howard Coffey Jianliang He and Zian Wang

Argonne National Laboratory Argonne, Illinois 60439 Abstract - Four System Concept Definition (SCD) contractors to the National Maglev Initiative (NMI) developed conceptual designs of maglev systems in 1991-1992. The objective of the work reported here was to perform independent calculations of the magnetic forces and fields of these four systems to assess the reasonableness of the results presented to the government. Commercial computer software was used for computing forces in the system...

K

More details on the calculation of Kc, Kmd and Kmq The leakage reactance, Xu, of the LLSM may be viewed as being composed of three components 13 . The first of these components, Xa, is the armature reaction reactance, and is directly analogous to the armature reaction reactance in a rotating synchronous macliine. The stator currents in the machine will produce a magnetic field of their own which interacts with the main flux field produced by the field magnets. Xa models the change in induced...

4

Fig. 7 Block diagram of demodulator circuitry The synchronous demodulators must be clocked at the carrier frequency. Since an unmodulated carrier is not explicitly available, the carrier frequency must be reconstructed from information contained in the modulated carriers. This reconstruction is accomplished by phase locking an oscillator to the sum of the squares of the modulated carriers. The oscillator frequency is divided by two to obtain the reconstructed carrier. The reconstructed carrier...

Work Breakdown Structure

An excellent Maglev Work Breakdown Structure (WBS) was prepared by Parsons Brinckerhoff for their Capital Cost study conducted for the Volpe National Transportation Systems Center 2 . This WBS was adopted without modification and is illustrated in Fig. 1 along with the cost estimates for each element which resulted from the Grumman SCD study. It is intended to examine the cost elements in this WBS in order to gain a feel for the important cost drivers and to investigate possible means to reduce...

Existing System For Digital Driving System Block Diagram

System Concept Definition of the Grumman Superconducting Electromagnetic Suspension (EMS) Maglev Design, presented at the Maglev '93 Conference, Argonne National Laboratory, May 19-21, 1993. Present State of Development of Synchronous Long-Stator Propulsion System for TRANSRAPID Maglev Trains Dr.-Ing. habil. Uwe Henning Siemens AG, Transportation Systems Group, Erlangen, Germany Abstract - The synchronous long-stator motor for the TRANSRAPID maglev vehicle is a propulsion...

05

Details of the trade-off studies used for characterizing the passive secondary suspension system are beyond the scope of this paper, but can be found in 11 and 51,. The design parameter values are listed in Table 4. P.I. 1.0 0.50 17 0ji 17oy 0.1 dB N - 65 To obtain a linear state space perturbation analysis model, we need to determine vehicle steady-state sideslip angle, fi, and the location of the center of pressure CP relative to the CG. This is performed through a force balance analysis,...

Mlu002n

In December 1992 the latest vehicle named MLU002N debuted on Miyazaki Test Track Fig.6 . We designed it taking lessons from the fire accident. We chose kinds of material, structure of body and, bogie and equipment for fire-protection. For example, all-aluminum body instead of FRP'use, noil-combustible material in the body, new aluminum wheels without using magnesium alloy, safety tires, use of fire-resistant hydraulic oil, fire extinguishing appliances, fire warning systems, and so on. MLU002N...

Ml500

In 1975 we constructed Miyazaki Test Track with a length of 7 km. In 1977 ML500 was fabricated for the new test track with inverted-T shaped guideway Fig.2 . ML500 attained a maximum speed record of 517 km h run on 21 December 1979. We could succeed in the experimental 500 knvh running only in 7 years after taking the first step. 500 knvh running only in 7 years after taking the first step. In 1980 Miyazaki Test Track was reconstructed. The in-vert-T shaped guideway was transformed into...

T [sec

Fig. 7 Simulated behavior of the inertial gup control length, and when the control error exceeds specific limits, the reference input can be switched. The curves depicted in Fig. 7 are the results of a simulation. A sinusoidal 5 Hz oscillation was applied to simulate the periodic disturbances of the track, and at time t, an additional ramp disturbance was superimposed. The positive characteristics of the inertial control not only determine the energetic behavior of the magnet but also...

0282

Two comments can be made about the results presented in Table VI. First, the major weakness of the component buildup method is the uncertainty in the bogie and the bogie guideway interaction drag. It is also the largest of the three components. Second, the uncertainties of the results based on 2 and 3 are unknown and hence a comparison cannot be used to vahdate the component buildup method. drag of Maglev vehicles. It includes procedures, commonly used in subsonic aircraft studies, to estimate...

Eddy Current In An Eds Maglev

Miyazaki Test Track

Train Control Systems for Super-conductive Magnetic L vitation System 424 K. Kubota, T. Tanaka, Y. Osada, S. Sasaki, and Y. Yokota Maglev Demonstration Project Site Location Study 430 The Environmental Impact of Maglev, a Comparative Study 434 Safety Evaluation Test for Electromagnetic L vitation Transport System H-100 441 A Dynamic Computer Simulation of a High Speed Maglev Vehicle 446 Maglev Automated Preventive Maintenance System 452 Using Existing Infrastructure to Make Maglev Work in the...

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Assuming a pole pitch of 2 m for the SCM and a vehicle speed of 138 m s, one obtains vcl 13.9 m s and vc2 16.1 m s. The time constant of the coil is about 42.6 ms. Figure 6 shows the dependence of the null-flux lift force components on the vertical displacement with a lateral shift of -5 cm and an effective air gap of 20 cm. One can see that the lift forces Fzll and Fz22 are dominant, and Fz 2 and Fz2j, resulting from the cross-connection, are relatively small. It should be noted that Fzi l is...