| Patent application number | Description | Published |
|---|
| 20080205094 | Power Supply Unit for the Motor of a Magnetic Levitation Railway System - A power supply to the motor of a magnetic levitation railway system is provided with higher shut-off security which is comparably more economical and compact, and has a shorter shut-off time. As a result, a power supply device of at least one embodiment is provided with a frequency converter which is connected in a direct manner to an energy supply network with the input switching system. The frequency converter contains a rectifier which is arranged downstream from the input switching system, an intermediate circuit which is connected to the rectifier, an inverted rectifier end step which is arranged downstream from the intermediate circuit and which comprises an associated control device and an output switching system which is connected to the inverted rectifier end step and which is directly connected to the motor. The control input of the input switching system and the control input of the output switching system are connected to an operational control device which produces a shut-off command, and the intermediate circuit includes a short circuiter for the discharge thereof, the short circuiter being connected with the control input thereof to the operational control device. | 08-28-2008 |
| 20090072820 | Method and system for determining the distance between a profiled surface from a functional surface moving in relation thereto by using two exploring coils - A method and a system are disclosed for determining the distance between a conducting surface which is profiled in the direction of distance determination and a functional surface moving in relation to the surface by using a measuring system. Two exploring coils are applied to an oscillator system and are connected on the output end to an analog-to-digital converter via a demodulator, the analog-to-digital converter being connected to an arithmetic module. In at least one embodiment of the invention, a method and a system are provided which allow to effect a distance measurement substantially uninfluenced by the profile of the conducting surface and by variations in ambient temperature. For this purpose, a sensor is used whose second exploring coil is mounted on the first exploring coil facing away from the surface at a defined, known distance. An arithmetic module calculates the distance of the functional surface from the profiled surface using the digital measured values to the two exploring coils and a digital reference value and the fixed distance. | 03-19-2009 |
| 20090201012 | Device for Locating a Vehicle Tied to a Roadway - A cost-effective system provides reliable location information for locating a vehicle tied to a guideway. Reference markers are mounted to the guideway and scanning devices are disposed in the vehicle and generate at least one output signal when they pass a reference marker. The scanning devices are formed from several individual sensors which are extended in the driving direction with an average scanning length equal to or greater than a distance between neighboring reference markers. | 08-13-2009 |
| 20090283008 | METHOD AND ARRANGEMENT FOR MEASURING A GAP - A method for measuring the gap between a levitation magnet of a vehicle of a magnetic levitation railway and a fixed reaction rail of the magnetic levitation railway and for generating a gap measured value which specifies the size of the gap. In order to form the gap measured value, the magnetic field, which is generated by the levitation magnet, or at least a measured variable associated with the field is evaluated. | 11-19-2009 |
| 20090315542 | Pole Position Measuring Device for a Magnetic Levitation Vehicle on a Magnetic Levitation Track and Method for Operation Thereof - A pole position measuring device for a magnetic levitation vehicle on a magnetic levitation track has a magnetic field sensor pair, for measuring the stator magnetic field of a track side stator, both magnetic field sensors of the magnetic field sensor pair being arranged at a given separation from each other and an evaluation device, which determines the pole orientation angle between the stator magnetic field of the track side stator and the magnetic reference axis of the magnetic levitation vehicle by means of the measured values from both magnetic field sensors. The separation between the two magnetic field sensors is less than half the wavelength of the fundamental wave of the track side stator magnetic field and the evaluation device is configured to determine the pole orientation angle from the measured values of the magnetic field sensors arranged thus. | 12-24-2009 |
| 20100019763 | Method and Device for Measurement of the Pole Orientation Angle of a Magnetic Levitation Vehicle of a Magnetic Levitation Railroad - A method for measuring the pole position of a magnetic levitation vehicle in a magnetic levitation railway, wherein a supporting magnetic field is generated on the maglev vehicle as a result of a supporting magnetic current on the vehicle side being fed to at least one supporting magnet. The voltage in the stator on the track is measured and the pole position angle between a reference axis of the stator and a reference axis of the maglev vehicle is determined. The magnitude of the supporting magnetic current on the vehicle side and thus the supporting magnetic field is temporally modified and a voltage induced in the stator by the temporal modification of the magnitude of the supporting magnetic field is detected. The pole position angle is formed using the measured values for the induced voltage. | 01-28-2010 |
| 20100026291 | METHOD AND DEVICE FOR MEASURING THE POLE ORIENTATION ANGLE OF A MAGNETIC LEVITATION VEHICLE ON A MAGNETIC LEVITATION TRACK - A method for measuring the pole position of a magnetic levitation vehicle on a magnetic levitation track. The pole orientation angle between the stator magnetic field of a track side stator and the magnetic reference axis of the magnetic levitation vehicle is determined by way of measured values from magnetic field sensors. The measured values for the stator magnetic field are measured using at least three magnetic field sensors, arranged along the vehicle longitudinal direction, a field strength value is determined for each measured value from the magnetic field sensors for each magnetic field sensor position and the pole orientation angle determined from at least a subset of the measured values from the magnetic field sensors when the determined field strength values meet given minimum requirements and, if not, an error signal is generated. | 02-04-2010 |
| 20100060269 | METHOD AND DEVICE FOR MEASURING THE POLE POSITION ANGLE OF A MAGNETIC LEVITATION VEHICLE OF A MAGNETIC LEVITATION SYSTEM - A method for measuring the pole position angle between the magnetic field of a track-side stator of a magnetic levitation train track and the magnetic reference axis of a magnetic levitation vehicle located on the track. When the levitation magnet of the magnetic levitation vehicle is energized, a direction component of the magnetic field of the stator, which component is predefined by a preferred measurement direction of the magnetic field sensors, is measured using a pair of magnetic field sensors, and the pole position angle is determined using the measured values of the two magnetic field sensors. The preferred measurement direction is set in such a way that at least one of the two magnetic field sensors has a minimum measurement sensitivity for the magnetic field of the levitation magnet. | 03-11-2010 |
| 20100126373 | METHOD AND DEVICE FOR CONTROLLING THE DRIVE OF A MAGNETIC LEVITATION VEHICLE ON A MAGNETIC LEVITATION TRACK - A method provides for the traction control of a maglev car on a maglev track. A levitation magnetic field is produced by supplying a levitation magnetic flux on the car side to at least two levitation magnets to produce a defined air gap between the maglev car and a reaction rail on the track side. A stator current is supplied to the stator to produce a propulsion force on the maglev track, the propulsion force acts upon the maglev car being determined by the magnetic coupling between the magnetic stator field and the magnetic levitation field. An oscillating movement of the maglev car in relation to the magnetic stator field is dampened by changing the magnetic coupling between the magnetic stator field and the magnetic levitation field on the car side. The levitation magnets are operated on the car side with at least two different individual levitation magnetic fluxes. | 05-27-2010 |
| 20130201734 | DEVICE FOR SUPPRESSING HIGH-FREQUENCY CURRENTS IN INFEED LINES OF AN INVERTER - A device for suppressing high-frequency currents in infeed lines to an inverter having a common-mode impedance. A magnetic core is configured for inductively coupling the infeed lines, wherein the current load on the common-mode impedance is minimized. A snubber impedance unit is inductively coupled to the common-mode impedance and has a frequency-dependent impedance. | 08-08-2013 |
