604 results about "Traction motor" patented technology

The invention discloses a hidden danger pre-diagnosis method of an elevator traction system, relates to the technical field of elevator safety monitoring, and is used for solving the technical problems of poor real-time performance, low accuracy and difficulty in defect positioning of hidden danger diagnosis of the elevator traction system in the prior art. The hidden danger pre-diagnosis method for the elevator traction system comprises the steps that multi-source data are synchronously collected, specifically, a current transformer is deployed in a power supply loop at the input end of an elevator traction motor to collect a three-phase current instantaneous value, a speed measurement encoder is used for measuring the speed, the elevator running state, the speed, the floor position and the time-variable load weight are synchronously obtained, and a time-space correlation data set is constructed; signal self-adaptive preprocessing: performing layered noise reduction, working condition alignment and dynamic normalization processing on the acquired current signals; multi-scale feature fusion extraction: current signal features are extracted from a basic feature layer, a time domain feature layer, a frequency domain and a time-frequency domain feature layer; and feature optimization and decision making: after feature screening and dimension reduction fusion, inputting a pre-training classification model to output hidden danger types, positions and risk levels.

A working vehicle includes an electric storage device; a traction motor configured to propel the working vehicle and to generate electrical energy when braking; a hydraulic system including a hydraulic pump driven by a load motor, a hydraulic actuator and a control valve; and a control system. The control system is configured to determine a state of charge of the electric storage device; induce additional load on the hydraulic system by directing the load motor to drive the hydraulic pump and actuating the control valve to direct flow of hydraulic fluid to the hydraulic actuator when the state of charge is at or above a predetermined threshold.

A locomotive comprises a DC power bus, traction motors, batteries, and a charging source, but has no prime mover engine. Each traction motor includes armature and field windings connected in parallel across the DC power bus. The batteries provide power to the DC power bus when in a motoring mode, and receive power from the DC power bus when in a charging mode and a dynamic braking mode. The charging source is connected across the DC power bus to provide charging power to the batteries when in the charging mode. The traction motors also provide charging power to the batteries when in the dynamic braking mode. The power from the charging source is less than the power that would be provided by a prime mover engine. The charging source provides no power to the traction motors when in the charging mode.

A vehicle control method and apparatus, and a storage medium, which belong to the technical field of vehicle control. The method comprises: in response to the fault level being a target level and a first detection result indicating that an engine and an ISG are in a series operation mode, setting a target charging power of a traction battery to be 0, and performing rotational speed closed-loop control on the ISG by using a first rotational speed as a target rotational speed; in response to an actual torque of the engine being less than 0 and the current of a direct-current bus being less than a current threshold value, controlling the traction battery to disconnect from a high-voltage loop, performing rotational speed closed-loop control on the engine, and performing voltage closed-loop control on the ISG; and supplying power to a traction motor (TM) by means of the ISG. Therefore, the stability of the voltage of a direct-current bus can still be ensured when a traction battery is disconnected, thereby ensuring that a TM can still stably drive a vehicle to safely travel when the traction battery has a fault.

A method for controlling torque generated by at least one traction motor of a vehicle before a vehicle launch includes: determining that torque demand increases while simultaneously at least one brake of the vehicle is in an applied state; in dependence on the determination, limiting torque generation by the traction motor in response to torque demand; and removing the limit in dependence on release of the at least one brake.

A method includes receiving an indication of a charging current received at an on-board charging circuit of a vehicle from a source having a charging voltage. The on-board charging circuit includes a multi-phase traction motor, an inverter electrically coupled to the multi-phase traction motor and including an upper set of switching elements and a lower set of switching elements, and an energy storage device (ESD) electrically coupled to the inverter and having a storage voltage. The method includes determining whether the charging voltage is greater than or equal to the storage voltage. When the charging voltage is greater than or equal to the storage voltage, the method includes instructing at least one switching element in the upper set to operate in an on state and all of the switching elements in the lower set in an off state to cause fast charging of the ESD using the charging current.

A system and method for a hybrid electric axle. The hybrid electric axle system, in one example, includes an engine interface assembly with a one-way clutch that is rotationally coupled to an input shaft and a gear shaft in a gear set that is rotationally coupled to a differential and a dog clutch configured to selectively rotationally couple the input shaft and the gear shaft in the gear set. The hybrid electric axle system further includes an electric drive assembly including a traction motor that is rotationally coupled to a gear train. In the electric axle system, the gear train is rotationally coupled to the differential and the engine interface assembly and the electric drive assembly are packaged in an axle housing.

The invention relates to the technical field of welding equipment, and discloses multi-station linkage railway traction motor end cover welding equipment which comprises a machining table and a rotating table rotationally installed above the machining table, and a plurality of clamps used for limiting a machine shell and an end cover are arranged above the rotating table. A first support is fixedly connected to the top of the machining table, a first air cylinder is fixedly arranged at the top of the first support, an I-shaped rotating piece is fixedly arranged at the driving end of the first air cylinder, a welding mechanism capable of horizontally moving and rotating is arranged on the lower side of the I-shaped rotating piece, and collecting assemblies are installed on the inner side and the outer side of the machine shell. The collecting assembly comprises a dust collection head, an inner cylinder and an annular intercepting plate. The machine shell and the end cover are sequentially rotated to the welding mechanism station to be subjected to inner and outer double-layer welding and then rotated to the detection assembly station to be subjected to quality detection, automatic welding and detection of the traction motor end cover are achieved, and chippings can be automatically collected during welding.

The invention relates to a method for active dynamic braking of an elevator system (100). The method includes detecting (310) a dynamic braking condition, acquiring (320) speed data representative of a speed of the elevator car (102), and activating (340) an active dynamic braking operation for dynamically braking movement of the elevator car if the acquired speed data indicates (330) that the speed of the elevator car reaches a predetermined monitored speed level. The active dynamic braking operation includes operating a motor inverter of an elevator drive unit of an elevator system by switching a high-voltage side switch and a low-voltage side switch of the motor inverter in a controlled manner such that a rotating field is generated in a stator winding of a traction motor, therefore, the rotation of the traction motor is dynamically braked, and the movement of the elevator car is braked. The invention also relates to an elevator drive unit, an elevator system, a computer program and a computer readable storage medium.

A locomotive has DC or AC traction motors, powered by a hydrogen fuel cell, and optionally other sources such as regenerative braking. The traction motors of the locomotive may be connected to a set of independent DC choppers or AC inverters, linked via a common DC bus, configured to regulate power from the one or more power sources. A manager module, among other functions, may receive inputs and signals to coordinate delivery of electricity from the sources to the motor. A method for retrofitting a legacy locomotive may include removing a generator and a control apparatus configured for diesel fuel, and installing a kit of apparatus configured to be powered by a hydrogen fuel cell. A railway system for use by locomotives powered by hydrogen has one or more hydrogen-generation stations deployed near a track of the railway system.

A method of operating an EV in one of various states provides an inverter control system having a high voltage circuit powered by a high DC voltage power source; a low voltage circuit powered by a low DC voltage power source that is substantially less than the voltage of the high voltage power source, the low voltage circuit being configured to power a microcontroller; and an inverter circuit having a plurality of high side switches and a plurality of low side switches, the inverter circuit being configured to deliver AC power to a traction motor. Upon powerup of the high voltage circuit and with the low voltage circuit being unpowered, the method establishes an emergency tow state with each of the high side switches and each of the low side switches being open permitting the EV to be towed without damaging the motor.

The invention relates to a disengagement device, in particular to a mechanical disengagement device for a subway gear box, and solves the problems that according to an existing speed reducer dynamic disengagement device, when inner teeth of a gear sleeve are combined with outer teeth of combination teeth, a synchronous ring is used for a long time, friction force is reduced, and the failure rate is increased. The outer spline section is arranged on the axle, the out-of-gear sliding sleeve is meshed with the outer spline section of the axle through the inner spline on the inner wall and is in sliding fit with the axle in the axial direction, and when the traction motor breaks down, the shifting fork is driven by the executing mechanism to shift the out-of-gear sliding sleeve, so that the outer spline of the out-of-gear sliding sleeve is separated from the inner spline of the sliding groove of the driven gear; at the moment, torque is input from the axle and transmitted into the out-of-gear sliding sleeve, the out-of-gear sliding sleeve is not meshed with the driven gear any more, the driven gear is only rotationally connected with the axle, torque transmission is interrupted, the structure is simple, meshing of the out-of-gear sliding sleeve and the driven gear does not need a synchronizing ring, and fault points are reduced.

The invention discloses a traction motor bearing fault online detection method and system, a medium and equipment. The method comprises the steps that S1, a working condition signal and a leakage current signal of a traction motor under a stable working condition are acquired; s2, performing adaptive decomposition on the leakage current signal, and capturing a sensitive mode corresponding to the state change of the bearing, namely a corresponding high-frequency mode component of the traction motor bearing in the leakage current signal; s3, extracting a peak-to-peak value Apeak of a main wave crest in the high-frequency modal component time domain waveform, a fluctuation period Ta, a resonant frequency fc of a high-frequency modal component frequency spectrum and energy Ef corresponding to the resonant frequency fc; and S4, inputting the Apeak, Ta, fc, Ef and working condition signals into a pre-constructed and trained bearing fault multi-feature fusion diagnosis model, and outputting a motor bearing diagnosis result. The method has the advantages that the fault features of the motor bearing can be effectively and sensitively obtained, and accurate traction motor bearing fault early warning is achieved.

The invention relates to the technical field of rail transit equipment fault diagnosis, and discloses a lightweight traction motor fault diagnosis method and system.The method comprises the steps that a high-precision fault diagnosis teacher model can be obtained by training a fault diagnosis teacher model composed of a feature extractor and a classifier; the fault diagnosis student model is trained by combining the dynamic adjustment of the sample uncertainty and the multi-factor driven adaptive distillation coefficient, so that the parameter quantity, deployment cost and reasoning time delay of the fault diagnosis student model can be remarkably reduced while the same fault diagnosis precision as that of a fault diagnosis teacher model can be ensured. The method is easy to implement, extra hardware equipment is not needed, and the running state health monitoring level of the traction motor and the rail transit vehicle in a resource limited scene can be effectively improved.

The utility model discloses an angle module for traction and steering of a wheeled robot, which relates to the technical field of robot running parts, and comprises a vehicle body bracket and tires at four corner ends, a mounting shell is arranged above the tires, an angle module is arranged on the side of the tires, and the angle module comprises a traction module and a steering module. A traction motor in the traction module is connected with a traction rotating shaft through a speed reducer, a driving shaft and other parts to drive tires to rotate, and the axis of the traction driving shaft is coplanar with tire landing points; the steering module achieves steering through a steering motor and other components. The vehicle body support comprises a central framework, a bridge frame and modular bridges, one modular bridge is connected with the weeding module, and the other modular bridge is provided with a self-adaptive suspension and a suspension optical axis. The angle module solves the problems of power transmission, steering performance, structural stability and the like of an existing angle module, and has the advantages of being efficient, flexible, stable, universal, good in environmental adaptability and the like.

The invention relates to the technical field of property management, and provides a coordination control method and device for multiple motor devices in property elevator management and a storage medium. The method comprises the following steps: S1, collecting real-time people flow data and motor operation state data; s2, generating fusion data with a structured metadata format; s3, constructing a distributed passenger flow prediction model in the building, and outputting a predicted passenger flow demand matrix of each region in a future period; s4, generating a collaborative scheduling instruction for the elevator traction motor cluster; and S5, the elevator traction motor cluster is controlled according to the collaborative dispatching instruction. The device comprises a data acquisition module, a data fusion module, a passenger flow prediction module and a control execution module which are used for executing the method. A computer program is stored in the storage medium, and the method is implemented when the computer program is executed by a processor. Furthermore, the overall optimization of the transportation efficiency, the energy consumption management and the user experience is realized.

The present application relates to the technical field of engineering machinery, and provides a coal winning machine posture adjusting device, an adjusting method and a coal winning machine. The coal winning machine posture adjusting device comprises a swing-to-walking mechanism, a direction adjusting mechanism and a control system. The swing-to-walking mechanism is arranged on the coal wall side of the coal winning machine body and is in contact with the bottom surface of the roadway to assist the walking of the coal winning machine body. The direction adjusting mechanism is used to drive the swing-to-walking mechanism to turn and drive the coal winning machine body to turn. The control system is in communication connection with the swing-to-walking mechanism, the direction adjusting mechanism and the posture detection mechanism of the coal winning machine body. The control system controls the swing-to-walking mechanism and the direction adjusting mechanism to act according to the detection signal of the posture detection mechanism. The control system can control the swing-to-walking mechanism and the direction adjusting mechanism to act according to the detection signal of the posture detection mechanism, adjust the walking posture of the coal winning machine body, reduce the additional friction force between the walking wheels of the coal winning machine and the pin rows of the scraper, reduce the output current of the traction motor and accelerate the walking speed.

The invention discloses a coiling tension control method, device and system for a steel wire calender. The coiling tension control method comprises the following steps that the coiling thickness of a mandrel rubber sheet of the calender, the height of the rubber sheet stored by a cloth storage frame and the tension borne by a product in the coiling process are obtained; judging the working mode of the production line based on the height of the stored film of the cloth storage rack; adjusting proportional gain and integral gain in a PID (Proportion Integration Differentiation) control controller according to the speed ratio range of a coiling motor and a rear traction motor under the working mode of the production line on the basis of the preprocessed coiling thickness information of the calender mandrel film and the tension of the product in the coiling process; the rotation speed ratio of the coiling motor to the rear traction motor in different working modes of the production line is obtained, and then the actual speed of the coiling motor is obtained; and on the basis of the actual speed of the coiling motor, the speed difference between the coiling motor and the traction motor is controlled, and then control over constant tension in the steel wire rolling and coiling process is achieved.

A panel pouring slip form construction method, comprising the following steps: 1) bottom mold installation; 2) concrete pouring; 3) traction motor traction slip form panel; 4) the first pouring block is vibrated and troweled; 5) traction mold advances, forming a secondary pouring area; 6) repeating steps 2) to 5), completing the secondary pouring operation; 7) repeating steps 2) to 6), completing the slope protection slip form pouring construction. The application adopts the above method, which can solve the problems of poor stability of the slip form, influence of the concrete floating force on the construction and complicated control of the traction mechanism control system in the prior art, and realizes more convenient and stable panel pouring slip form construction.

A hybrid drive system (200) for a work machine (100) includes a drive system (202). The drive system (202) includes an engine (204) that generates a first energy supply. The drive system (202) also includes a generator (206) mechanically coupled with the engine (204) to drive the generator (206). The drive system (202) further includes a battery system (208) that generates a second energy supply. The drive system (202) includes a motor generator unit (210) mechanically coupled with the generator (206) to drive the generator (206). The motor generator unit (210) is driven by the battery system (208). The hybrid drive system (200) also includes a controller (216) communicably coupled with the drive system (202). The controller (216) is configured to control the drive system (202) to direct, towards one or more traction motors (110, 112) of the work machine (100), a portion of at least one of the first energy supply via the generator (206) and the second energy supply via the motor generator unit (210) and the generator (206).

This invention discloses a concrete pool masonry device. The device includes an upper and lower lifting track, a left and right lateral moving track, a base, a traction motor, a mortar spreading device, a brick placing device, and a grouting device. The upper and lower lifting track has a grooved track, and the left and right lateral moving track is slidably connected to the grooved track of the upper and lower lifting track. The left and right lateral moving track has a moving track, and the base is slidably connected to the moving track of the left and right lateral moving track. The traction motor is fixedly connected to the base and slidably connected to the left and right lateral moving track. The mortar spreading device is fixedly connected to the base and the brick placing device. The base has an adjustment latch, and the grouting device is slidably connected to the adjustment latch of the base. This invention can automate the mortar spreading, brick placing, and grouting processes in masonry work, greatly improving masonry efficiency, reducing overall machine power consumption, ensuring a beautiful wall appearance, and having a simple structure for easy maintenance.

A locomotive has a power bus that provides power to components of the locomotive when operating in a motoring mode or a charging mode. A plurality of batteries, one or more traction motors, and a charging source are all connected to the power bus. The batteries are operable to provide power to the power bus when operating in the motoring mode, and to receive power from the power bus when operating in the charging mode. The traction motors are operable to receive power from the power bus when the locomotive is operating in the motoring mode. The charging source intermittently provides charging power to the power bus to charge the batteries when the locomotive is operating in the motoring mode or in the charging mode. The charging source is selectively activated and deactivated based at least in part on the state of charge of the batteries.

The invention relates to a cooling device for a traction motor of a vehicle, to a related mechanical assembly, to a vehicle and to a method of replacement. A cooling device (28) for a traction motor (24) of a vehicle (10), the motor (24) being surrounded by a housing (26) having a wall (36) provided with at least one opening (38) for the entry of an air flow. The cooling device (28) comprises a casing (40) having a first face (48) and an opposite second face (50), the casing (40) delimiting an air duct (58) connecting an air inlet (52) located on the first face (48) to an air outlet (56) located on the second face (50), and an electric fan (42) mounted inside the casing (40) and configured to force the circulation of the air flow. The cooling device (28) is configured to be removably fixed to the housing (26).

This invention relates to the field of rail transit and discloses a traction system, method, electronic device, and storage medium for rail transit vehicles. The traction system includes a traction inverter, a traction motor, a battery power supply path, an auxiliary converter, and a control unit. When the rail transit vehicle is in battery traction mode, the control unit controls the battery power supply branch to draw power from the battery, and the auxiliary converter boosts the obtained DC power before providing it to the traction inverter for conversion into three-phase AC power to drive the traction motor. Furthermore, when the rail transit vehicle is in external power supply traction mode, the control unit controls the traction inverter to draw power from the external AC power grid and converts the obtained electrical energy into three-phase AC power to drive the traction motor. This solution provides traction power for multiple scenarios, including battery traction mode and external power supply traction mode, allowing the vehicle to flexibly switch traction modes according to actual scenario requirements.

The application provides a traction motor health diagnosis method and system, the method comprising: obtaining a plurality of existing electrical signals of a traction motor from a traction control unit of a converter, and performing equal-angle resampling and data preprocessing on the plurality of existing electrical signals respectively to obtain a plurality of equal-angle dimensionless stationary signals irrelevant to rotation speed, working condition and load; performing demodulation on the plurality of equal-angle dimensionless stationary signals respectively and extracting a plurality of fault feature indexes by using a signal time-frequency analysis method; taking the plurality of fault feature indexes as inputs, applying a preset multiple-input multiple-output diagnosis model to perform fault diagnosis, and outputting a fault mode of the traction motor and a severity corresponding to the fault mode; and performing health management on the traction motor according to the plurality of fault feature indexes. The application can effectively eliminate diagnosis errors caused by PWM power supply harmonics, variable rotation speed and variable load transient processes, and improve the accuracy of non-stationary weak signal feature extraction and fault diagnosis.

The invention relates to the technical field of traction motor maintenance, and discloses a worktable for dismounting and overhauling a rail transit traction motor, which comprises a platform base, a first turntable and a second turntable are rotationally arranged on the platform base, a clamping unit is fixed on the first turntable, and a locking structure is arranged at the bottom of the first turntable; a liftable rotor jacking mechanism is arranged on the second turntable; a first ejector rod is arranged on the long-end ejector mechanism, a second ejector rod is arranged on the short-end ejector mechanism, the first ejector rod and the second ejector rod are coaxially arranged, shaft sleeves are arranged at the ends of the first ejector rod and the second ejector rod, and the diameter of each shaft sleeve is larger than the outer diameter of a central shaft of a traction motor rotor. And the shaft sleeve is internally provided with an ejector head matched with a process hoisting hole in the end part of the rotor central shaft. The maintenance workbench can accurately position the stator and the rotor of the traction motor so as to conveniently disassemble and assemble the stator and the rotor, and can be matched with a robot so as to realize disassembly and assembly automation.

Transmission device provided between a drive shaft (39) coupled to a drive wheel (19) and a motor shaft (55) coupled to a traction motor (16), wherein the transmission device (12) comprises the following: - a first engagement mechanism (60) for switching, using operating oil, a first power transmission path provided between the drive shaft (39) and the motor shaft (55) between a power transmission state and a power blocking state; - a second engagement mechanism (61) for switching, using operating oil, a second power transmission path provided between the drive shaft (39) and the motor shaft (55) between a power transmission state and a power blocking state; - an oil passage switching valve (83) provided between an oil pressure supply source (81) and the first and second engagement mechanisms (60, 61), and switching between a state in which operating oil is directed to the first engagement mechanism (60) and a state in which the operating oil is directed to the second engagement mechanism (61); and - an output control valve (82) provided between the oil pressure supply source (81) and the oil passage changeover valve (83) and switching between a connected state in which operating oil can pass from the oil pressure supply source (81) through the output control valve (82) to the oil passage changeover valve (83) and a blocked state in which the operating oil is blocked from the oil pressure supply source (81) to the oil passage changeover valve (83) and is discharged through the oil passage changeover valve (83); wherein the oil passage switching valve (83) is designed in such a way as to ensure that operating oil is not supplied to the first engagement mechanism (60) and the second engagement mechanism (61) simultaneously.

The utility model discloses a converter system, and relates to the technical field of vehicle engineering. The converter system comprises a converter body formed by cascading a plurality of same basic power subunits, the input end of the converter body is used for being directly connected with a single-phase traction network, and the output end of the converter body is used for independently driving a plurality of traction motors. The output end of the converter body is provided with a three-phase output filter capacitor. According to the converter system, the basic power subunits are cascaded to form the converter main body, so that the current-carrying capability and the voltage endurance capability can be improved; and the output end of the converter main body is provided with a three-phase output filter capacitor, so that when the transformer main body outputs voltage to drive the traction motor, the torque ripple and electromagnetic noise of the traction motor can be reduced.

This utility model discloses a linkage unwinding system for a winding machine and newly added equipment, including an original winding controller, an original oscillating roller structure, an original unwinding mechanism, and an original traction mechanism. The original winding controller is communicatively connected to the controller of the newly added equipment, and the controller of the newly added equipment is connected to a new traction motor and a new traction encoder. This utility model enables communication between the original winding controller and the controller of the newly added equipment. The original unwinding motor and the new traction motor start synchronously, and the stopping of the new traction motor triggers the stopping of the original unwinding motor. Through the communication between the original winding controller and the controller of the newly added equipment, and the coordination between the new traction motor and the original winding motor, the linkage unwinding of the newly added equipment and the original winding equipment is achieved. This provides operational space for adding new process equipment without changing the layout and mechanical structure of the original winding machine, expanding the functions that the original winding machine can achieve, and reducing the production line modification cost.

The present disclosure provides "Asymmetric wire insulation for traction motor stators." A stator assembly is presented. The stator assembly includes a stator core defining slots and magnetic wires positioned within the slots. Each magnetic wire includes a conductive core and an insulation layer surrounding the core. The insulation layer can have a varying thickness, with thinner portions spanning certain sides of the wire and thicker portions spanning other sides.