124results about "Propulsion using dc motors" patented technology

The application discloses a traction transformer control cabinet and a rail train, and relates to the technical field of rail transit vehicles.The traction transformer control cabinet comprises a detachable shell and a control module arranged in the detachable shell; wherein the control module is used for determining the fan frequency of the fan in the cooling system of the traction transformer according to the first collection data sent by the whole vehicle controller of the rail train and the second collection data sent by the traction transformer, so as to utilize the fan frequency to perform frequency conversion control on the fan; the first collection signal comprises vehicle speed data, and the second collection signal comprises oil temperature data; through the arrangement of the traction transformer control cabinet, the control module in the traction transformer control cabinet performs frequency conversion control on the cooling fan according to the data such as the vehicle speed of the train and the oil temperature of the traction transformer, the low noise and the intelligentization of the traction transformer are realized, the noise of the rail train can be effectively reduced, and the passenger comfort is improved.

The utility model discloses a power supply device for an electric carry-scraper and the electric carry-scraper comprising the power supply device, and belongs to the technical field of engineering machinery. The power supply device comprises a charging device, a direct current distribution box and an auxiliary power supply, the charging device is used for converting alternating current into direct current and providing the direct current for the direct current distribution box, the direct current distribution box is used for tapping the received direct current, and the auxiliary power supply is electrically connected to the charging device and the direct current distribution box; and an auxiliary power supply for receiving power from the charging device and the DC distribution box and supplying power to the DC distribution box, the auxiliary power supply independently supplying power to the electric carry-scraper when the electric carry-scraper needs power and the charging device does not supply power to the electric carry-scraper. The maneuverability of the towing type electric carry-scraper can be improved, the efficiency of an original power system can be improved, and the comprehensive cost of the carry-scraper can be reduced.

The invention relates to a drive system for a rail vehicle, wherein the drive system comprises an internal combustion engine, a generator driven by the internal combustion engine and configured to generate a three-phase alternating voltage in generator mode, an uncontrolled first rectifier, a first connection electrically connecting the generator to the first rectifier, a first DC intermediate circuit in which at least one first intermediate circuit capacitor is arranged, at least one controlled first inverter, at least one first drive motor which can be operated by means of an alternating voltage from the first inverter, a second connection electrically connecting the first inverter to the first drive motor, and a control device.The drive system is characterized by the fact that the generator is designed to start the internal combustion engine in engine mode, that the drive system includes a third connection by means of which the generator can be electrically connected to the first inverter, and that the control device is additionally designed to control the first inverter in such a way that it provides an alternating voltage by means of which, with the third connection closed, the generator can be operated in engine mode.

Electrical architecture for a vehicle, comprising a propulsion electrical network (10L, 10R) and a non-propulsion electrical network (20), the propulsion electrical network comprising at least a first fuel cell assembly (30L, 30R) and a propulsion electric motor (1L, 1R) connected to the first fuel cell assembly comprising at least a first fuel cell (31L, 31R) and first auxiliary electrical equipment (32L, 33L, 34L, 32R, 33R, 34R), the non-propulsion electrical network comprising a second fuel cell assembly (40L, 40R) comprising at least a second fuel cell (41L, 41R) and second auxiliary electrical equipment (42L, 42R). The architecture comprises at least one electronic control unit connected to the fuel cell stacks (30L, 30R, 40L, 40R) to control them selectively in two start-up phases and one nominal operating phase. Aircraft comprising such an architecture.SUMMARY FIGURE : Fig. 1.

This overhead traveling vehicle system comprises: a track that is at least partially disposed in a grid pattern; a traveling unit that travels along the track; and an overhead traveling vehicle having a body unit that is disposed below the track and suspended from the traveling unit. The traveling unit includes a traveling wheel that rotates around a rotating shaft and rolls on the track; and a travel driving motor that drives the traveling wheel. The travel driving motor is installed on the rotating shaft of the traveling wheel.

The invention relates to an electrically driveable vehicle, in particular a rail vehicle (10), comprising an intermediate DC circuit (40), an in-vehicle, three-phase on-board electrical system (70) fed by the intermediate DC circuit (40), at least one drive motor fed via a converter (80), and at least one coolant pump (100) for pumping a coolant that cools the converter (80). According to the invention, in addition to the in-vehicle three-phase on-board electrical system (70), the vehicle also has a second on-board electrical system (110) and the at least one coolant pump (100) is connected to the second on-board electrical system (110).

A control method and system includes determining a resonant frequency of a vehicle system operably coupled with an external power source providing voltage and current to the vehicle system. A first filter extracts a phase or frequency component from the voltage provided by the external power source to produce a stable voltage component. A second filter extracts a phase or frequency component from the current provided by the external power source to produce a stable current component. The stable voltage component is out of phase with the stable current component. A control input for a converter device of the vehicle system is determined based on the stable voltage component, the stable current component, and the resonant frequency. The stable voltage component, the stable current component, and the control input are communicated with the converter device to change the resonant frequency of the vehicle system.

The invention provides a traction system optimization control method and device. The method comprises the steps of obtaining an intermediate link voltage of a traction system, an output voltage of an auxiliary inverter, an alternating current side voltage of a four-quadrant rectifier and a working mode of the four-quadrant rectifier; when the working mode is a controllable rectification mode, iteratively adjusting the intermediate link voltage according to the output voltage, a preset intermediate voltage step value and a preset upper limit value and a preset lower limit value of the modulation ratio of the auxiliary inverter until the modulation ratio of the auxiliary inverter is between the upper limit value and the lower limit value of the modulation ratio of the auxiliary inverter; generating a four-quadrant rectifier modulation ratio according to the adjusted intermediate link voltage and the AC side voltage; and when the modulation ratio of the four-quadrant rectifier is greater than the preset upper limit value of the modulation ratio of the four-quadrant rectifier, switching the working mode from a controllable rectification mode to an uncontrolled rectification mode. According to the invention, the self-adaptive switching of the working modes of the four-quadrant rectifier is realized, so that the four-quadrant uncontrolled rectification mode is fully utilized to supply power to the auxiliary inverter.

The invention relates to a battery simulator (200) for testing a test object (50), comprising: a first voltage step-down converter unit (1a) having - a first output (8a) and - a first voltage reference point (16a), wherein the first voltage step-down converter unit (1a) converts a first intermediate circuit voltage (UZKa) into a first output voltage (Ua); a second voltage step-down converter unit (1b) having - a second output (8b) and - a second voltage reference point (16b), wherein the second voltage step-down converter unit (1b) converts a second intermediate circuit voltage (UZKb) into a second output voltage (Ub), wherein the first output (8a) and the second output (8b) are electrically connected to one another and a battery simulator output (22) is connected to the first voltage reference point (16a) and the second voltage reference point (16b) such that a battery simulator output voltage (UA) is applied between the first voltage reference point (16a) and the second voltage reference point (16b). The invention also relates to a test setup, to a method for operating a battery simulator (200), and to a method for testing a test object.

In the case of this power conversion device for a railroad car, a converter control section (242) provided in a control device (240) comprises: a counter voltage computation unit (501) for computing a counter voltage to be used as a reference for current control of a converter (210) on the basis of a detected value of an overhead-line voltage; and a voltage phase estimation unit (502) for estimating the phase of an alternating-current voltage to be applied to an auxiliary power supply device (107) during an unpowered period on the basis of the counter voltage. The counter voltage computation unit (501) comprises: a phase difference estimation part (810) for estimating a phase difference between a first phase, that is, the phase of a first voltage which is an overhead-line voltage detected by an ACPT (102) after the unpowered period is ended, and a second phase, that is, the phase of an alternating-current second voltage estimated by the voltage phase estimation unit (502) on the basis of an overhead-line voltage detected by the ACPT (102) before the start of the unpowered period; and a switching part (820) for switching the sign of a frequency correction amount by which to correct the frequency of the second voltage on the basis of the estimated phase difference, that is, the value estimated for the phase difference.

A method and system include determining a resonant frequency of a vehicle system operably coupled with an external power source that provides voltage and current to the vehicle system. A first filter extracts a phase or a frequency component from the voltage provided by the external power source to generate a stabilizing voltage component. A second filter extracts a phase or a frequency component from the current provided by the external power source to generate a stabilizing current component. The stabilizing voltage component is out of phase with the stabilizing current component. A control input of a converter device of the vehicle system is determined based on the stabilizing voltage component, the stabilizing current component, and the resonant frequency. The stabilizing voltage component, the stabilizing current component, and the control input are communicated with the converter device to change the resonant frequency of the vehicle system.

A power supply module (102) for supplying power to at least one mining or construction machine (112), the power supply module (102) comprising: a receiving unit (104) operative for receiving alternating current, AC, power from a power grid or an external power source (106); an alternating current to direct current, AC-DC, converting unit (108) operative for converting the AC power received by the receiving unit (104) to DC power, wherein the power supply module (102) is operative for feeding the DC power to the at least one mining or construction machine (112) via at least one DC transmission line (110), and the power supply module (102) is mobile.

Transport system with rail profile section wherein a mobile unit can be moved in the direction of the rail on the rail profile section, wherein at least one line carrying alternating current is attached to the rail profile section by means of is attached to a bracket the line extends parallel to the rail direction of the rail profile section, where an electronic unit is attached to the rail profile section by means of the bracket, wherein the electronic unit comprises an antenna winding and signal electronics electrically supplied by the antenna winding.

In a non-contact power supply system, each of a plurality of non-contact power supply devices includes a filter circuit connected to an inverter to convert power supplied from a power source into AC power and including a reactor and capacitors. The non-contact power supply system includes an electrostatic coupler to electrostatically couple one non-contact power supply device to another non-contact power supply device. The electrostatic coupler includes two capacitors electrically connected in parallel, and a different-phase coil between the filter circuit of the one non-contact power supply device and the two capacitors. The different-phase coil includes an inductance component when a short-circuit or a ground fault occurs.

The present application relates to the technical field of sightseeing car traction system, and disclose a kind of traction system for straddle type monorail sightseeing car, including power supply brake detection module, path monitoring system, monorail overhead line and wireless communication module;The power supply brake detection module includes energy storage module and traction control module, the energy storage module is used to provide direct current, and the power energy is input to traction control module by DC / DC converter;The power supply brake detection module is used to change DC1500V into AC1500V;The power supply brake detection module includes direct current DC mode and alternating current AC mode;Power supply brake detection module includes ramp conversion module, ramp conversion module is used to track the slope on track in the process of running, path identification slope section, the path identification slope section is provided with climbing mode, flat slope mode and downhill deceleration mode.The present application has the advantages of automatic traction speed regulation and automatic conversion of switching direct current and alternating current.

An aerial vehicle system is provided with: a track at least partially disposed in a lattice shape; and an aerial vehicle that has a traveling part that travels along the track, and a main body part that is disposed below the track and overhangs from the traveling part. The traveling unit includes traveling wheels that roll on the track about the rotating shaft, and a traveling drive motor that drives the traveling wheels. The traveling driving motor is arranged on a rotating shaft of the traveling wheel.

Methods and systems are provided for a coupling device for a tractor and a trailer. In one example, a system, comprising a tractor comprising an engine, a motor, and an electrical energy storage device, a trailer comprising a battery bank and a power distribution unit, and a coupling configured to fixedly couple the trailer to the tractor and to electrically couple the power distribution unit to the electrical energy storage device.

To make a lamp clearly visible even when a driver of an oncoming vehicle views the lamp from an oblique direction.SOLUTION: An upper-side staircase 18 of a staircase 15 connected to a front part 7A of an upper deck 7 from a front side in order to access an upper deck 7 is formed by sandwiching a plurality of steps of treads 19A, 19B, 19C, arranged at intervals in a vertical direction, between a pair of stringers 20. Further, each stringer 20 is provided with a notch 21 at a position corresponding to heights of a direction indicator 9 and a side marker lamp 10 which are provided on either side of right and left sides of a front side 6A of a building 6 constituting a vehicle body 2. Thus, when a driver of an oncoming vehicle views the direction indicator 9 and the side marker lamp 10 from an oblique direction, the direction indicator 9 and the side marker lamp 10 can be clearly visually recognized by the driver of the oncoming vehicle through the notch 21.SELECTED DRAWING: Figure 2

In a non-contact power supply system 110, each of a plurality of non-contact power supply devices 1A, 1B, 1C, 1D, and 1E has a filter circuit 9 connected to an inverter 8 configured to convert power supplied from a power source 2 into AC power, the filter circuit 9 including a reactor and capacitors. The non-contact power supply system 110 includes an electrostatic coupling unit 112 configured to electrostatically couple one non-contact power supply device to another non-contact power supply device, the electrostatic coupling unit 112 having two capacitors C10 and C20 electrically connected in parallel; and a different-phase coil 114 that is provided between the filter circuit 9 of the one non-contact power supply device and the two capacitors C10 and C20, the different-phase coil 114 having an inductance component when a short-circuit or a ground fault occurs.

A power receiver (100) includes a power-receiver communication coil (170) and a power-receiver control unit (230) that controls energization of the power-receiver communication coil (170) for supply of a power supply request signal, requesting the power transmitter coil (22) to supply power, to the power-receiver communication coil (170). The power-receiver control unit (230) executes an abnormality determination process determining whether an abnormality related to wireless power transfer has occurred, and a prevention process preventing supply of the power supply request signal to the power-receiver communication coil (170) when the abnormality related to wireless power transfer is determined to have occurred.

The invention relates to an electrically operated civil engineering machine and to a method for electrically operating the civil engineering machine, having a mobile carrier device, at least one electrical consumption unit, at least one supply device by means of which electric current is supplied from an external energy source, which supplies electric current in alternating voltage with a first frequency and a first voltage value, the supply device having a first supply unit, which is arranged remote from the mobile carrier device and is connected to the external energy source, and having a second supply unit, which is arranged on the carrier device and is connected to the first supply unit via a connecting line for transmitting electric current. According to the invention, it is provided that the first supply unit has a frequency converter, which converts a frequency of the alternating voltage of the supplied current to a second frequency that is higher than the first frequency, and a first transformer, which increases the alternating voltage to a second voltage value, and that the electric current is transmitted from the first supply unit via the connecting line to the second supply unit on the carrier device with the second frequency and the second voltage.

The invention relates to a pantograph (2) for a road vehicle (1) for supplying traction energy from contact wires (5) of an overhead line system (3). It comprises an articulated support linkage (8) which can be rotatably supported on the road vehicle (1) via a base joint (15) and which carries two contact rockers (12, 13) rotatably mounted via rocker joints (22). Each of the contact rockers (12, 13) has two contact strips (14) which are resiliently supported on the respective rocker joint (22) by leaf springs (23). A lifting device (17) serves to raise the support rod (8) from a rest position in which the contact rockers (12, 13) are lowered close to the vehicle, into an operating position in which the contact rockers (12, 13) are raised to establish electrical contact between the slip rings (14) and the contact wires (5).The leaf springs (23) are electrically insulating to isolate the potential between the overhead line potential, on which the contact strips (14) are located when the contact wires (5) are electrically connected, and the vehicle potential, on which the support linkage (8) is located. According to the invention, a leaf spring (23) has a vibrating insulating body (32) with an elastically deformable body wall (33) which is upright on the leaf spring (23) and transverse to a longitudinal direction (L) of the leaf spring (23). The body wall (33) is coupled to the at least one leaf spring (23) via at least two fixing points (34) such that a spring movement (F) of the leaf spring (23) forces a flexural oscillation (S) of the body wall (33). This increases the availability of the pantograph (2) for supplying traction energy, even under winter road conditions.

The invention discloses a pantograph jumping detection and input voltage maintaining circuit and a control method thereof, and relates to the technical field of electrified road vehicle control. Comprising a voltage input unit, a current detection unit, a control unit, a power conversion unit, a voltage output unit and a load, the pantograph is powered on from a contact network, the voltage input units import the voltage received by the pantograph into a circuit system for operation, and the power conversion unit collects the voltage value of a loop between the voltage input units at a high speed to determine whether the pantograph jumps or not. The current detection unit performs real-time current detection on current input by the voltage input unit and current output by the voltage output unit, and the control unit blocks output of a switching network in the power conversion unit according to circuit voltage data, so that voltage support is facilitated, the discharge arcing phenomenon during pantograph jumping is effectively prevented, and the safety of the pantograph is improved. And fault alarm, shutdown and automatic reset can be realized, so that normal operation of electrified road vehicles is ensured.

The disclosure relates to an overhead line system for supplying electricity to the drive of one or more construction machines for piece good or bulk material transport, wherein the overhead line comprises at least one pair of lines which extend parallel along the route, carry current with opposing polarity and which can be electrically contacted by corresponding current collectors of the construction machines, characterized in that each line is provided at the end with at least one guide forming a feed channel for receiving the head of the current collector, the feed channel converging in the direction of the associated line.

An overhead traveling vehicle system includes a track at least partially disposed in a grid pattern, and an overhead traveling vehicle including a traveling section configured to travel along the track, and a main body disposed below the track and suspended from the traveling section. The traveling section includes a traveling wheel configured to roll on the track about a rotation axis as a principal axis, and a traveling drive motor configured to drive the traveling wheel. The traveling drive motor is provided on the rotation axis of the traveling wheel.

The invention relates to a transport system comprising a pair of rails with two rails (4) that extend in parallel, a primary conductor (3) through which a primary current flows, and a rail vehicle (8), wherein the rail vehicle (8) has a frame (12), a plurality of wheels (9) which are rotatably mounted relative to the frame (12), an electric motor (6) for driving the wheels (9), and a receiving unit (13) for contactlessly picking up energy from the primary conductor (3), and wherein the frame (12) has an electrically conductive housing, the wheels (9) are electrically conductive, the rails (4) are electrically conductive, and there is an electrically conductive connection between the housing of the frame (12) and the wheels (9) and an electrically conductive connection between the wheels (9) and the rails (4).

The present invention relates to a construction machine (10) comprising an upper structure (12), an undercarriage (14) having an undercarriage, on which the upper structure (12) is mounted rotatably about a vertical axis (18), and a feed arm (40) for at least one energy line (50) by means of which energy can be fed to the construction machine (10) from the outside, the feed arm (40) being adjustably mounted on the upper structure (12). According to the invention, at least one drive device (61, 62) is provided for actively adjusting the feed arm (40) relative to the upper structure (12).

Vehicle electrical architecture, comprising a propulsion electrical network (10L, 10R) and a non-propulsion electrical network (20), the propulsion electrical network comprising at least a first fuel cell assembly (30L, 30R) and a propulsion electric motor (1L, 1R) connected to the first fuel cell assembly comprising at least a first fuel cell (31L, 31R) and first auxiliary electrical equipment (32L, 33L, 34L, 32R, 33R, 34R), the non-propulsion electrical network comprising a second fuel cell assembly (40L, 40R) comprising at least a second fuel cell (41L, 41R) and second auxiliary electrical equipment (42L, 42R). The architecture includes at least one electronic control unit connected to the fuel cell assemblies (30L, 30R, 40L, 40R) to selectively control them in two start-up phases and one nominal operating phase. Aircraft comprising such an architecture.SUMMARY FIGURE : Fig. 1.

Systems and methods for managing electrical power at a worksite (100) are described herein. A control system (112) determines available sources of electrical power at the worksite (100). The control system (112) establishes communications with one or more work machines (102) at the worksite (100) and commences monitor power usage of the one or more work machines (102). Upon receiving an indication that a work machine (102) requires power, the control system (112) determines the type of power to be used by the work machine (102). The types of power can include a grid power supply (124) and a portable power supply (132). If the portable power supply (132) is required, the control system (112) transmits an instruction to move the portable power supply (132) to the location where the electrical power is to be used. Further, the control system (112) can transmit a command to the work machine (102) to have the work machine (102) transfer excess electrical power stored in a battery (106) to a regenerative power storage using a regenerative capture system (144).