366 results about "Electric traction" patented technology

Aspects of the present invention relate to a method and to a control system for controlling an electric traction motor of a vehicle, the control system comprising one or more controllers, wherein the control system is configured to: limit a rate of change of torque requested from the electric traction motor for changing speed towards a speed target, in dependence on a lash crossing protection rate limiter; and upon removal of the limit prior to the speed reaching the speed target, inhibit initial increase of a torque requested from the electric traction motor for changing speed towards the speed target.

A safety circuit for a high-voltage electrical traction system comprising a plurality of electric machines. The safety circuit comprises a primary high voltage interlock loop (HVIL) circuit configured to be connected to a battery and for each of the plurality of electric machines, a secondary high voltage interlock loop (HVIL) circuit, wherein each secondary HVIL-circuit is controlled by a corresponding switch unit configured to break the secondary HVIL-circuit if a fault in a corresponding electric machine is detected, and wherein the switch unit comprises a trigger device configured to break the primary HVIL-circuit if the switch unit is opened.

An arrangement for a vehicle includes a fuel cell, an electric traction and / or propulsion motor, and a single cooling circuit cooling the fuel cell and the electric motor. The cooling circuit includes two parts: a first, high-flowrate and high-temperature part including a high-temperature exchanger and a second, low-flowrate and low-temperature part including a low-temperature exchanger. The first part cools the fuel cell and the second part cools the electric motor. The first part includes a high-flowrate pump, in particular for a high flowrate of between 8000 l / h and 9000 l / h and the second part includes a low-flowrate pump, in particular for a low flowrate of between 2000 l / h and 3000 l / h.

The invention relates to an electrical traction network (1) for a motor vehicle, comprising a separately excited synchronous machine (2), a pulse-controlled inverter (3), a high-voltage battery (4), a DC / DC converter (6) and a charger (5), wherein the charger (5) has a mains connection (9) for an external AC voltage network, wherein the charger (5) is connected to AC voltage outputs of the pulse-controlled inverter (3) via first switching elements (S1), wherein the AC voltage outputs of the pulse-controlled inverter (3) are connected to the phases of the synchronous machine (2) via second switching elements (S2), wherein the DC voltage connections (HV+_PWR, HV-_PWR) of the pulse-controlled inverter (3) and an output of the DC / DC converter (6) are connected to the high-voltage battery (4) via third switching elements (S3), wherein the inputs of the DC / DC converter (6) are connected to the DC voltage connections (HV+_PWR, HV-_PWR) of the pulse inverter (3),wherein fourth switching elements (S4) are arranged between the output of the DC / DC converter (6) and two half-bridges of the DC / DC converter (6), wherein the DC / DC converter (6) is connected to a rotor winding of the synchronous machine (2) via fifth switching elements (S5), and a method for operating such an electrical traction network.

A ridable work vehicle includes an electric traction drive and an arm drive unit that is operable to move a loader arm assembly. The loader arm assembly includes a mechanical interface operable to mount a work attachment. The work vehicle includes a detachable operator control operable to wirelessly communicate with a controller of the work vehicle. One or both of the controller and the detachable operator control is operable to measure a proximity distance between the work vehicle and the detachable operator control. A platform sensor is operable to provide a platform signal in response to detecting an operator on the platform. The controller is operable to: determine a disposition of the operator relative to the work vehicle based on the proximity distance and the platform signal; and change an operating setting of the work vehicle based on a change in the disposition of the operator.

A driving dynamics system for a vehicle may include at least one wheel brake for dissipative braking of a wheel of the vehicle; at least one braking unit associated with the at least one wheel brake and designed to generate a dissipative braking torque via the at least one wheel brake; at least one electric traction motor controllable to generate a regenerative braking torque for at least one wheel or axle of the vehicle; and a central control unit configured to control the at least one brake unit and the at least one electric traction motor for a braking function in combination such that a combined braking torque is generated by means of the at least one brake unit and the at least one electric traction motor. The braking function relates to simultaneous control of a basic braking torque and a controlled additional braking torque.

Common mode voltage discharge shields are disposed over end turns of stator windings for a three phase electric traction motor within an electric vehicle. The common mode voltage discharge shields are capacitively coupled to the end turns to a ground strap, providing a low impedance path for common mode voltages accumulating at a neutral for electric traction motor as a result of high frequency switching of the motor drive voltage to produce desired torque. An insulating layer separates the common mode voltage discharge shields from the end turns. Accumulation of the common mode voltage in excess of a bearing breakdown voltage, and the associated potential for discharge through bearings between the stator and rotor and electrical discharge machining, is reduced or eliminated.

The invention relates to a driving dynamics system for a vehicle, comprising at least one wheel brake (RB1, RB2.RB3, RB4) for dissipatively braking a wheel of the vehicle; at least one brake unit (EMB, EHB) assigned to the at least one wheel brake (RB1, RB2, RB3, RB4) and configured to generate a dissipative braking torque by means of the at least one wheel brake (RB1, RB2, RB3, RB4); at least one electric traction motor (TM1, TM2, TM3, TM4) controllable to generate a regenerative braking torque for at least one wheel or axle of the vehicle; and a central control unit (M-ECU domain) which is configured to control the at least one brake unit (EMB, EHB) and the at least one electric traction motor (TM1, TM2, TM3, TM4) for a braking function in combination with one another such that a combined braking torque can be generated by means of the at least one brake unit (EMB, EHB) and the at least one electric traction motor (TM1, TM2, TM3, TM4).The braking function relates to a control case in which a basic braking torque and a controlled additional braking torque are controlled and / or regulated simultaneously; wherein optionally the basic braking torque is generated by the at least one braking unit (EMB, EHB) and the controlled additional braking torque is generated by the at least one electric traction motor (TM1, TM2, TM3, TM4); or the basic braking torque is generated by the at least one electric traction motor (TM1, TM2, TM3, TM4) and the controlled additional braking torque is generated by the at least one braking unit (EMB, EHB); or the at least one braking unit (EMB, EHB) and the at least one electric traction motor (TM1, TM2, TM3, TM4) each jointly generate the basic braking torque and the controlled additional braking torque.

The invention discloses a train carriage bulk material unloading device under an electric traction contact network. The rack lifting stand column is arranged on the walking trolley; the horizontal cantilever beam is arranged at the top of the lifting stand column of the rack, and a horizontal conveying pipe is arranged on the horizontal cantilever beam; the vertical connecting arm is movably connected with the end part of the horizontal cantilever beam; a vertical conveying pipe communicated with the horizontal conveying pipe is arranged on the vertical connecting arm; the vertical connecting arm can rotate around a first axial direction and a second axial direction relative to the horizontal cantilever beam, and the vertical connecting arm can be folded below the horizontal cantilever beam when rotating around the second axial direction; the material suction working head is arranged at the end part of the vertical connecting arm, is communicated with the vertical material conveying pipe, and comprises a negative pressure material suction nozzle communicated with the vertical material conveying pipe; and the revolving platform is used for controlling the horizontal cantilever beam to horizontally rotate around the axis of the rack lifting upright post. The device is used for sucking and unloading materials in a train carriage, is flexible to use, and does not interfere with an electric traction overhead line system in the working process.

A cooling system for an electric traction machine includes a looped conduit system for conducting a first cooling liquid and a circulation pump for conveying the first cooling liquid in a first circulation direction. The cooling system includes an expansion tank filled at least partially with the first cooling liquid and a gas, and a motor input terminal for fluidically connecting the looped conduit system on an input side to the electric traction machine. The cooling system includes a motor output terminal for fluidically connecting the looped conduit system on an output side to the electric traction machine and a first heat exchanger for dissipating heat from and / or supplying heat to the first cooling liquid. In the first circulation direction, the first heat exchanger is arranged downstream of the electric traction machine and connected via the motor input and output terminal and upstream of the expansion tank.

The invention relates to a motor vehicle comprising a passenger compartment, an electric traction machine, a battery pack, at least one power electronics unit, and a cooling radiator, a thermochemical system (10) comprising a first enclosure called a reservoir (1), containing gas in liquid phase and a second enclosure called a reactor (2) containing reactive salts, the two enclosures being configured to be selectively placed in fluid communication at least via a control solenoid valve (3), the reactor being able to be heated by supplying calories from the operation of the electric traction machine, and / or the battery pack, and / or the power electronics unit, and the reactor is capable of delivering calories, following an opening of the control solenoid valve, to the passenger compartment of the vehicle, and / or the battery pack, and / or the cooling radiator of the vehicle.

An electric energy dissipating system for a vehicle. An air flow producing unit provides a pressurized air flow through a fluid conduit. A polyphase electric machine runs on a predefined number of phases. The air flow producing unit is mechanically connected to, and operated by, the electric machine. An electric brake resistor arrangement is located downstream of the air flow producing unit, and comprises one resistor unit for each one of said phases. An electric power system is configured to receive electric power generated by an electric traction motor during braking of the vehicle. The power system comprises an inverter which converts a DC input into a polyphase AC output. The electric machine and the resistor arrangement are electrically connected to the inverter in parallel, such that each phase of the AC output of the inverter is connected to a respective phase of the electric machine and to a respective resistor unit, in parallel.

Aspects of the present invention relate to a control system (100) for controlling a hybrid vehicle (300) having a powertrain system (20) comprising an engine (202) and an electric traction motor (216). The control system (100) comprises one or more processors (120) collectively configured to: receive a first input signal (164) indicative that a first vehicle mode has been selected in which the use of the electric traction motor (216) as a source of motive power is prioritised; receive a second input signal (160) indicative of one or more operating conditions of a traction battery (200) of the electric traction motor (216), wherein the one or more operating conditions comprise an available battery power of the electric traction motor (216) and a state of charge level of the battery (200); determine, in dependence on the second input signal (216), a minimum state of charge level of the battery (200), wherein a first minimum state of charge level is determined if the available battery power is below a first predetermined threshold, and a second minimum state of charge level is determined if the available battery power is at or above the first predetermined threshold, wherein the first minimum state of charge level is greater than the second minimum state of charge level; and output a first control signal (170) to the powertrain system (20) to perform an engine start when the state of charge of the battery (200) reaches the determined minimum state of charge level. Aspects of the invention are also related to a system incorporating a control system (100) and a powertrain system (20) comprising an electric traction motor (216) and an engine (202), a vehicle (300) incorporating a control system (100), and a method (400) of controlling the vehicle (300).

An electric bicycle includes a front wheel, a rear wheel, an electric traction motor which drives the front and / or rear wheel, a traction battery which supplies the electric traction motor with electrical power, a controller for actuating the electric traction motor, a pushing-aid controller for controlling an adaptive pushing-aid function which is assisted by the electric traction motor depending on an interaction force between a person pushing and the electric bicycle, an inclination sensor for determining an inclination angle of the electric bicycle relative to the ground, a traction-motor torque determining device for determining a current traction-motor torque, an electric-bicycle speed sensor for determining a current electric-bicycle speed, and an electric-bicycle weight memory which stores a current electric-bicycle weight value. The interaction force is determined by the pushing-aid controller from the inclination angle, the current traction-motor torque, the current electric-bicycle speed, and the current electric-bicycle weight value.

An arrangement for a vehicle, the arrangement comprising an electric traction motor, an energy system comprising a traction battery, the energy system being configured to feed electric energy from the traction battery to the electric traction motor in a first load condition, and configured to receive electric energy generated by the electric traction motor in a second load condition, and an energy dissipater electrically connected to the energy system, wherein the arrangement further comprises processing circuitry configured to determine an indication of a load condition change of the energy system from the first load condition to the second load condition, and control the energy system to feed electric energy to the energy dissipater in response to the indication of the load condition change.

A trailer platform system with independent propulsion and control includes a steerable first axle connected to a pair of first wheels, a second axle connected to a pair of second wheels, and at least one electric traction motor configured to drive the steerable first axle and / or the second axle. A high voltage battery system is configured to power the at least one electric traction motor. A load platform is supported by a chassis and a suspension, wherein the load platform is a wagon-style platform with the first and second wheels located at the four corners of the load platform. A lead vehicle hitch connection is configured to removably couple to a lead vehicle.

A vehicle system for an electrified vehicle, which implements a launch control mode to launch the electrified vehicle with a torque pre-load, includes an electric traction motor configured to selectively provide drive torque to wheels of the vehicle, a thermal system configured to cool the electric traction motor, a brake system to brake one or more of the vehicle wheels, and a controller having one or more processors. The controller is programmed to determine whether one or more vehicle conditions are satisfied, and apply a torque pre-load to the vehicle wheels via the electric traction motor, based on the vehicle conditions being satisfied, while the vehicle is at a standstill by braking the vehicle wheels with the brake system.

A mobile device (10) that can be connected to an OBD2 interface (9) of an electrically powered motor vehicle (1) is designed to read data relating to the state of charge of an electric traction battery (2) of the motor vehicle (1) from the motor vehicle (1) via the OBD2 interface (9) and to transmit it to an external device (12) outside the motor vehicle (1).

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 discloses a harmonic suppression method and system of a rail transit electric traction system. The system comprises a traction unit harmonic response acquisition module, a traction group construction and intra-group influence analysis module, a traction group collaborative behavior analysis module, a collaborative suppression strategy generation module and a suppression resource regulation and control module. The method comprises the following steps: dividing a plurality of traction units on the same train into traction groups, analyzing harmonic response information of the traction units on a traction group level to generate comprehensive harmonic influence characteristics, analyzing action results of the plurality of traction groups on a traction power supply section level, and judging whether a harmonic collaborative amplification or collaborative instability trend exists or not; and thus, a collaborative harmonic suppression strategy for the traction group or the traction unit is generated. Through differential regulation and control on harmonic suppression resources and in combination with feedback correction, dynamic adjustment of a harmonic suppression process is realized, and pertinence of harmonic suppression under a complex operation condition and operation stability of a traction power supply system are improved.

The invention relates to a method for controlling a thermal conditioning system (100) for a motor vehicle, comprising a refrigerant circuit (10) comprising:- A main loop (A) successively comprising:- a compressor (7),- a first exchanger (1) thermally coupled with an interior air flow (Fi),- a second exchanger (2),- A first bypass branch (B), - A second bypass branch (C), comprising a third exchanger (3) thermally coupled with an element (25) of an electric traction chain,- A third bypass branch (D) comprising a fourth exchanger (4) exchanging heat with the interior air flow (Fi), the method comprising the successive steps:- circulating refrigerant at high pressure in the first exchanger (1),- expanding the refrigerant to an intermediate pressure and circulating it in the third exchanger (3),- expand the refrigerant fluid to a low pressure and circulate it in the fourth exchanger (4). Abstract figure: Figure 3,

An energy consumption optimization method for a hybrid electric vehicle (HEV) having a hybrid powertrain includes obtaining a plurality of operating parameters of the hybrid powertrain, the hybrid powertrain comprising one or more electric traction motors powered by a battery system and an engine configured to drive the HEV and selectively recharge the battery system, obtaining trip information indicative of a length or duration of a current trip of the HEV, determining a remaining energy in the battery system based on the plurality of operating parameters of the hybrid powertrain, determining a trip energy needed for the hybrid powertrain to complete the current trip of the HEV based on a plurality of operating parameters of the hybrid powertrain and the trip information, comparing the remaining energy in the battery system to the trip energy, and controlling operation of the hybrid powertrain based on the comparing.

The invention discloses a cable traction system and a cable traction laying method. A cable traction machine can realize electric traction of a traction rope and detect the traction force in real time. When the sudden change of the traction force is detected, the cable winding and unwinding mechanism can be controlled to reduce the winding speed, so that the traction rope wound on the traction wheel is properly loosened, and the traction force is gradually recovered to a stable state. Meanwhile, the cable winding and unwinding mechanism automatically adjusts the winding speed according to extrusion force data fed back by the pressure detection assembly, and it is ensured that the extrusion force is always kept within the preset parameter range. According to the embodiment of the invention, the extrusion force and the traction force are creatively combined to comprehensively regulate and control the winding speed of the cable winding and unwinding mechanism, and through the intelligent control mode, it is guaranteed that the cable traction system is always in a reasonable working range in the traction and winding process of the traction rope, and the cable traction efficiency is improved. Automatic traction and automatic winding of traction ropes such as steel wire ropes are successfully achieved, and then automatic traction operation of cables connected with the traction ropes is achieved.

An electric traction axle / beam, e-axle / e-beam, for a vehicle comprising at least one electric machine, a pair of drive shafts each connected to a respective wheel of the vehicle and a transmission chain operatively connecting the electric machine to the pair of drive shafts,the transmission chain comprising a first transfer system, a second transfer system, and a differential unit operationally interposed in series between them,the drive shafts being coaxial to a longitudinal axis of the axle, the electric machine being subtended by a parallel and separate axis of the longitudinal axis.

A mining machine having a hybrid diesel-electric drivetrain with launch control includes a diesel engine, an electric generator in communication with the diesel engine to produce electrical power, at least one electric traction motor, at least one brake resistor, and a power controller including a processor. The processor is configured to initiate launch control by receiving an instruction to initiate launch control, increasing electrical power to the at least one brake resistor, increasing power output of the diesel engine to cause the electric generator to produce the increased electrical power, and, upon receiving a launch command, redirecting the electrical power from the at least one brake resistor to the at least one electric traction motor.

The invention discloses a pipe diameter self-adaptive electric traction type threading apparatus for building electrical construction, and particularly relates to the technical field of electric traction type threading apparatuses, the threading apparatus comprises a hand-held threading apparatus body provided with a wire conduit, and the end part of the wire conduit is provided with an inclined pipe; elastic limiting plates which are arranged in a circular array mode and attached to the wire are movably arranged on the inner side of the end of the inclined pipe, and curved surface parts arranged on the elastic limiting plates face a port of the inclined pipe and protrude out of the port of the inclined pipe. According to the electric traction type threading apparatus, the curved surface part faces the port of the inclined pipe and protrudes out of the port, so that the threading apparatus can be directly attached to the surface of a wire, the threading apparatus is allowed to adapt to wires with different pipe diameters, meanwhile, the elastic limiting plate can reduce rigid contact between the wire and the pipe opening, direct friction between the wire and the edge of the fixed pipe opening is avoided, and the threading effect is improved. And the abrasion problem caused by sliding friction between the wire and the port corner is reduced.

The application provides a mobile filter cake crushing device and a plate-and-frame filter press, wherein the mobile filter cake crushing device comprises a mobile vibration and positioning integrated mechanism, a filter cake crusher, a guide rail, a vibration rod, a homing contactor and a return contactor; the mobile vibration and positioning integrated mechanism moves along the guide rail with the filter cake crusher under the traction of an electric traction mechanism. When discharging is completed, the mobile vibration and positioning integrated mechanism moves along the guide rail with the filter cake crusher under the traction of an electric driving mechanism, is automatically positioned at the lower part of the discharging filter plate, and vibrates and crushes the large filter cake. The application solves the problem of how to crush large filter cake to prevent them from forming an arch in the hopper below the plate-and-frame filter press.

1. The name of the design product: side guard plate. 2. The use of the design product: used for the side guard plate of the bottom replacement electric traction vehicle battery replacement system. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a motor constant speed control method for an electric tractor, and relates to the technical field of line construction, and the method comprises the steps: a tension detection module which collects a tension signal of a wire in the paying-off operation of a high-voltage transmission line in real time; the frequency identification module is electrically connected with the tension detection module and is used for performing frequency domain analysis on the tension signal and identifying a periodic disturbance frequency corresponding to tension fluctuation; the self-adaptive control module comprises a sliding mode controller, and the sliding mode surface design of the sliding mode controller is combined with the periodic disturbance frequency, and a sliding mode control signal is generated based on a traction machine motor rotating speed feedback signal and a rotating speed instruction signal. The sliding mode controller is combined with disturbance frequency design, the anti-interference capacity is high, even if external disturbance exists, constant-speed operation of a traction machine motor can be maintained, paying-off speed fluctuation is reduced, the straightness and tension consistency of wire laying are guaranteed, the operation risk is reduced, the overall efficiency is improved, and stable constant-speed and tension control is achieved; and the manual intervention and fault shutdown times are reduced.

The present invention discloses a method for preparing an ultra-high molecular weight polyethylene fiber electric rope, which relates to the technical field of electric traction ropes. The preparation comprises the following steps: paralleling and twisting; dipping: the ultra-high molecular weight polyethylene fiber strands are transported by guide rollers to the inside of a dipping tank for dipping, and the resin glue is a mixture of triallyl isocyanurate, phenolic resin, oily polyurethane and glass microbeads; extrusion and pre-drying; preliminary drying; braiding the rope core; pre-shaping; drying and shaping; braiding a double sheath; coating. The advantages of the present invention are that when the ultra-high molecular weight polyethylene fiber electric rope is prepared, it is functionalized by the composite resin glue in the dipping tank, and through the synergistic effect between triallyl isocyanurate, phenolic resin, oily polyurethane and glass microbeads in a specific ratio, and the optimization of the processing technology, the high temperature resistance and corrosion resistance of the electric rope are improved, the overall strength is enhanced, and the insulation resistance is good, which meets the use requirements of some specific occasions.