4212 results about "Electric drive" patented technology

The invention discloses an electric anastomat for a surgical department, comprising an osculating part and a driving device for driving an execution mechanism, wherein the osculating part is provided with a nail supporting seat, a nail bin and the execution mechanism; the driving device is an electric driving device which comprises a power supply, a control panel, a closed driving unit and a percussion driving unit; the closed driving unit consists of a closed motor and a closed driving mechanism; the input end of the closed driving mechanism is connected with the closed motor; the output end of the closed driving mechanism is connected with the execution mechanism of the osculating part; the percussion driving unit consists of a percussion motor and a percussion driving mechanism; the input end of the percussion driving mechanism is connected with the percussion motor; the output end of the percussion driving mechanism is connected with the execution mechanism of the osculating part; the closed motor and the percussion motor are respectively connected with the control panel through leads; and the control panel is connected with the power supply through a lead. According to the electric anastomat disclosed by the invention, the quality of an operation can be improved, the operation difficulty of doctors is reduced and the automatic operation can be realized.

A method of remotely updating control software in a heavy-duty vehicle having at least one programmed controller including securing the heavy-duty vehicle; determining that the vehicle is secured; establishing a wireless connection with the heavy-duty vehicle; downloading an updated control software; and updating the heavy-duty vehicle's control software with the updated control software in response to the determining that the vehicle is secured.

A fuel management control method for a hybrid electric vehicle drive having an internal combustion engine and an electric motor arranged in parallel such that both can propel the vehicle; the system including an electric motor driven fuel pump and a programmable microprocessor; and wherein the method further includes monitoring vehicle speed and sensing braking pressure and directing signals of both vehicle speed and braking to the microprocessor and processing such inputs in accordance with an aggressive fuel management program including shut-off of fuel flow to the gas engine in response to vehicle braking at vehicle speeds above a predetermined maximum hysteresis speed and maintaining the fuel shut off during vehicle coasting above a predetermined speed while controlling the electric motor to provide regenerative braking or vehicle start during such fuel shut off modes of operation.

One embodiment of an electric drive system includes first and second gear assemblies coupled to a hollow axle tube, and first and second electric motors respectively coupled to the first and second gear assemblies. Further, the electric drive system includes first and second drive axles positioned within the hollow axle tube. The first drive axle includes a first end portion coupled to a first wheel and a second end portion coupled to the first gear assembly. Similarly, the second drive axle includes a first end portion coupled to a second wheel spaced-apart from the first wheel and a second end portion coupled to the second gear assembly. Actuation of the first electric motor rotates the first drive axle and first wheel via the first gear assembly and actuation of the second electric motor rotates the second drive axle and second wheel via the second gear assembly.

Strategies other than immediate elimination of regenerative braking (FIG. 2) are invoked when an incipient wheel lock-up is detected, the ABS becomes active, and/or incipient wheel slip is detected. The strategies include: reducing the regenerative braking torque as a function of the coefficient of friction of a surface on which the vehicle is traveling (FIG. 3); and adjusting regenerative braking in relation to the rate at which wheel slip is changing (FIG. 4). Some of the strategies may be applied on an individual wheel basis (FIG. 5), and some of the strategies may be applied in conjunction with operating friction brakes of the vehicle to apply at least some of the reduction in regenerative braking torque as friction brake torque (FIG. 1).

An electric driven hydraulic fracking system is disclosed. A pump configuration includes the single VFD, the single shaft electric motor, and the single hydraulic pump mounted on the single pump trailer. A controller associated with the single VFD and is mounted on the single pump trailer. The controller monitors operation parameters associated with an operation of the electric driven hydraulic fracking system as each component of the electric driven hydraulic fracking system operates to determine whether the operation parameters deviate beyond a corresponding operation parameter threshold. Each of the operation parameters provides an indicator as to an operation status of a corresponding component of the electric driven hydraulic fracking system. The controller initiates corrected actions when each operation parameter deviates beyond the corresponding operation threshold. Initiating the corrected actions when each operation parameter deviates beyond the corresponding operation threshold maintains the operation of the electric driven hydraulic fracking system.

An electric driven hydraulic fracking system is disclosed. A pump configuration that includes the single VFD, the single shaft electric motor, and the single hydraulic pump that is mounted on the single pump trailer. The single VFD converts the electric power of at least 13.8 kV to a VFD rated voltage level of at least 4160V and drives the single shaft electric motor at the VFD voltage level of up to 4160V to control the operation of the single shaft electric motor and the single hydraulic pump. The single shaft electric motor drives the single hydraulic pump with the rotation at the rated RPM level of at least 750 RPM. The single hydraulic pump continuously pumps the fracking media into the well at the HP level of at least 5000 HP. The single hydraulic pump operates on a continuous duty cycle to continuously pump the fracking media at the HP level of at least 5000 HP.

The invention discloses an electric driving fracturing type power supplying semitrailer. The electric driving fracturing type power supplying semitrailer is characterized in that a high-voltage switch, a transformer and two rectifying unit sets are adopted to correspondingly drive a plurality of high-voltage converting units and a plurality of low-voltage converting units through common DC buses.The whole electric driving fracturing type power supplying semitrailer is small in size, compact in arrangement, and economic; the common high-voltage switch, the transformer and the rectifying unitsare adopted, so that the wiring of power supplying circuits can be reduced; the equipment quantity and investment output power can be decreased; and the use demand can be met.

System and method for non-invasive lysis of sub-dermal tissue by means of focused ultrasonic energy, the system comprising: a source of ultrasonic energy adapted to operate in continuous wave mode and to focus ultrasonic energy in a focal zone within the sub-dermal tissue, the ultrasonic energy being adapted to induce tissue cavitation in the focal zone; means for continuous displacement of the source over the skin surface; and means for determining a safe speed for the displacement, the safe speed allowing to avoid thermal tissue damage. The source of ultrasonic energy is accommodated in a hand-held applicator including a wheeled traction system powered by an electric drive.

The invention discloses a fracturing well site layout system. The fracturing well site layout system comprises a gas source, a processing device, a power supply system, a power distribution system, anelectric drive fracturing device, an electric drive sand mixing device, a sand supply device, a liquid supply device, an instrument device and a high-low pressure manifold, wherein the gas source provides fuel needed by power generation for the power supply system after being processed by the processing device; the power supply system drives the electric drive fracturing device and the electric drive sand mixing device through the power distribution system; the sand supply device provides fracturing sand needed by mixing for the electric drive sand mixing device; the liquid supply device provides needed liquid for the electric drive sand mixing device; the output end of the electric drive sand mixing device is connected with the electric drive fracturing device through the high-low pressure manifold; the electric drive fracturing device communicates with a well mouth through the high-low pressure manifold; and the instrument device is used for remotely controlling the electric drive fracturing device and the electric drive sand mixing device. The fracturing well site layout system has the beneficial effects that the occupied area is smaller, the output power of the single electricdrive fracturing device is larger, wiring of the whole well site layout is simpler, the wiring time is shorter, and application is more flexible.

An electric driven hydraulic fracking system is disclosed. A pump configuration that includes the single VFD, the single shaft electric motor, and the single hydraulic pump that is mounted on the single pump trailer. A pump configuration includes a single VFD configuration, the single shaft electric motor, and the single shaft hydraulic pump mounted on the single pump trailer. The single VFD configuration converts the electric power at the power generation voltage level distributed from the power distribution trailer to a VFD voltage level and drives the single shaft electric motor to control the operation of the single shaft electric motor and the single hydraulic pump. The VFD voltage level is a voltage level that is required to drive the single shaft electric motor. The VFD configuration also controls operation of the auxiliary systems based on the electric power at the auxiliary voltage level.

A method of controlling a hybrid drive train of a vehicle having, in series, an internal combustion engine, a clutch, an electric motor and a transmission with an output connected to the drive axle. During traction operation, the vehicle changes from an electric driving mode into a combination driving mode or a combustion engine driving mode, in that the clutch is engaged and the combustion engine torque is temporarily increased. The method includes regulating engagement of the clutch at least until reaching a starting rotational speed of the combustion engine such that the acceleration of the combustion engine occurs according to a predetermined progression of rotational speed and that the torque of the combustion engine is increased by the same amount as the transferable torque of the clutch is increased by the engagement process.

The invention discloses an electric-drive mixing device, and relates to the technical field of mixing equipment. The electric-drive mixing device comprises a motor power unit, a mixing tank, a discharge centrifugal pump, a suction centrifugal pump, a powder tank, a control chamber, a drainage manifold, a water-powder mixing manifold, a chemical adding pump and a suction header. The mixing tank is fixedly mounted on one side of the motor power unit, and the control chamber is fixedly mounted on one side of the mixing tank. The electric-drive mixing device has the advantages that a selected motor is a variable-frequency all-in-one machine, that is to say, a frequency converter is integrated with the motor, and there is no independent frequency conversion cabinet, so that the occupied space is remarkably saved, and the device is suitable for vehicle transportation; the variable-frequency all-in-one machine has much lower heat than the motor, a radiator is integrated to a cabinet casing of the motor and the frequency converter, and no plate-fin radiating holes are provided; a large-channel air duct is arranged at a motor and frequency converter casing position of a fan, and accordingly, blockage is avoided.

The invention discloses a single-machine single-pump electric drive fracturing semitrailer. A traditional power supply semitrailer and a fracturing semitrailer are integrated in an optimized manner torealize a semitrailer simultaneously having power supply and fracturing functions; the power supply semitrailer and the fracturing semitrailer do not need to be used in a matched manner so that the single-machine single-pump electric drive fracturing semitrailer is more flexible in actual use and the oil and gas field well site layout is greatly optimized; the transportation is convenient; a working state can be reached only by using one group of high voltage cables to be connected with high voltage power supply so that the wiring mounting is faster; compared with diesel oil drive fracturing,electric drive fracturing has the advantages of small noise and no waste gas exhaust pollution; and as a driving source is electric power, compared with the diesel oil, the electric power has the advantage of lower use cost.

The invention discloses a high-power five-cylinder plunger pump. The stroke of the high-power five-cylinder plunger pump is 10 in, the cylinder spacing is 11.5 in, and the braking power is 5000 HP. The plunger pump has the beneficial effects that the power is large, and the displacement is large; the pump is suitable for electric drive fracturing and turbine fracturing; the integral power end assembly or the split type power end assembly can be selected according to specific operation working conditions, so that the arrangement mode of a fracturing unit or a fracturing vehicle is better realized; and the stable operation with the long stroke and the braking power of 5000 HP is guaranteed by means of the size of the cylinder spacing.

The present invention provides an electric-driven vehicle, which comprises a supporting platform and an upright tube, wherein the supporting platform has first and second ends and a longitudinal axis perpendicular to the first and second ends, the upright tube is fitted at the first end of the supporting platform and operatively connected with the supporting platform, a handle frame is provided on a top end of the upright tube. The electric-driven vehicle further includes two driving wheels operatively mounted at opposite sides of the first end of the supporting platform, at least one steering wheel operatively mounted on a bottom of the second end of the supporting platform, a driving means for the driving wheels, and a power supply means mounted on the bottom of the supporting platform and electrically connected with the driving means. The present invention also provides a support platform structure for an electric-driven vehicle, which comprises a first portion and a second portion, wherein the first portion having sleeves for operatively mounting the driving wheels, and a first side; the second portion having a steering knuckle for operatively mounting the steering wheels, and a second side corresponding to the first side; the first side and the second side are connected via a connecting member, and at least one of the first side and the second side can rotate about the bond-linkage element.

An insulated glazing unit includes a spacer defining a framed area, first and second glazing panes attached to the spacer, a pane conductive layer on an inner surface of the first glazing pane, and a dielectric layer disposed on the pane conductive layer. A shade for use with the insulated glazing unit is affixed to the first glazing pane. The shade includes one or more layers selected from a resilient layer, a substantially transparent shade conductive layer, and an opaque shade conductive layer. When an electric drive is applied between the pane conductive layer and the shade conductive layer, a potential difference between the pane conductive layer and the shade conductive layer causes the shade to extend from a retracted configuration to an extended configuration. The shade can further include at least one ink coating layer including pigments that selectively reflect or absorb certain visible colors and infrared.

A hybrid vehicle drive control system selectively switches from an electric drive (EV) mode in which a first clutch is released and a second clutch is engaged, and a hybrid drive (HEV) mode in which both clutches are engaged. A slip control of the second clutch is executed when the first clutch is being connected to start the engine during switching from EV mode to HEV mode by controlling a torque transfer capacity of the second clutch to a required drive force, and by simultaneously increasing a motor/generator torque by an amount corresponding to a torque required to start the engine while maintaining a slipping state of the second clutch until connection of the first clutch is completed. Thus, a loss of torque is not felt by the driver and the shock is small when the engine is started during switching from EV mode to HEV mode.

An electric drive system (1) operated by muscle power for a vehicle (2) includes a foot pedal (5) and a mechanical generator (6) mechanically connected to the foot pedal. The drive system also includes an electric transmission (4) and an electric control system (20) with a control program (21) of the generator, which is able to generate a counter or load moment (GM). The drive system also includes a starting control system (22) for the generator, by means of which a standstill pedal resistance (TW) and a high starting moment (MA) is produced at the foot pedal. When used in a stationary training apparatus (3), the drive system includes a motor operation control system (23) with a bi-directional converter (31), by means of which the generator is also able to be operated as a motor.

A power split hybrid wheel drive system of the present invention comprises a planetary gear train (16) coupled to the output shaft of a driving engine (12). A primary motor or generator (18) is coupled to an output shaft of the planetary gear train (16) for receiving power therefrom, and a secondary motor or generator (30, 32) is associated with each driven vehicle wheel (14) to provide an electrical power pathway. A mechanical differential gear train (20) is coupled between the output shaft of the planetary gear train (16) and each driven vehicle wheel; (14) to provide a mechanical power pathway, while a mechanical clutch (22) and brake system (24) is configured to regulate the mechanical power routed to the differential gear train (20). A control system (48) is included to regulate the flow of electrical power between the primary motor (18) and secondary motors or generators (30, 32).

An intelligent multi-loop thermal management system for and electric vehicle has components including a battery pack, an electric-drive module, an on-board charger a DC/DC converter, a battery radiator, a battery refrigerator, a motor radiator, an electric water pump, an electric oil pump, an expansion tank, a PTC heater, a heat exchanger, an electric compressor, a condenser, an evaporator, a receiver drier, and a heater core. The system also includes an electric-drive module having a drive motor and a motor control unit. The components are thermally connected to each other by using a pipeline and a four-way valve, a three-way valve, a straight-through valve, and an electronic expansion valve that are disposed in the pipeline, to form a plurality of loops that separately performs thermal management and control the battery pack, the electric-drive module, and a passenger compartment air conditioner.

A hybrid vehicle drive control system has a first clutch interposed between an engine and a motor/generator, a transmission including several gear position clutches arranged between the motor/generator and a drive wheel, and a controller. The controller selectively starts the engine using torque from the first clutch during a mode drive change from an electric drive mode to a hybrid drive mode. When an engine start command occurs during the drive mode change, the controller selects the engaged gear position clutch that has the maximum torque transfer capacity from the engaged clutches constituting a vehicle running gear occurring during an engine starting process as a second clutch to be controlled. Then the controller executes a slip control of the second clutch when the first clutch is being connected to start the engine during the mode change from the electric drive mode to the hybrid drive mode.

The invention relates to an authentication and/or energy auditing system for a plug-in electric drive vehicle. A first device connects to a first power apparatus and establishes an electrical power path between the first and a remote device. The latter is connectable to a second power apparatus. The authentication system preferably includes a powerline transceiver to receive a request containing an identifier from the remote device over the power path. Control means controls operation of the first device and responds to the request to initiate an authentication process to determine whether or not the remote device is authentic and authorised to exchange power with the first device, and to activate a control switch to electrically connect the first device to the first power apparatus only upon an authentic and authorised determination. The energy auditing system measures energy received by each device in a specified time interval and electrically disconnects the first device from the first power apparatus when a power loss between the respective devices is detected.

A hand-held power tool has a device housing having a battery pack compartment. An electric drive motor is arranged in the device housing. An output for driving a working tool is connected to the electric drive motor and arranged in the device housing. A battery pack is arranged in the battery pack compartment and is substantially received completely in the battery pack compartment. At least one grip for guiding the power tool is provided. The device housing has a housing volume and the battery pack compartment has a compartment volume located inside the device housing. A ratio of the housing volume to the compartment volume is approximately 1.5 to maximally io approximately 5.

The invention discloses a power system of a mixed power automobile and a control method thereof. The power system comprises a rear electric motor drive system, an integrated type starting generator drive system, a power supply system and a control system; the rear electric motor drive system comprises a rear electric motor, a speed reducer, a differential and a rear electric motor controller and separately drives rear wheels; the integrated starting generator drive system comprises an engine, a front electric motor, a gear box, a front differential and a front electric motor controller; as the nose cabin power assembly, the power system can work under the integrated starting generator drive mode, the pure electric drive mode, the regenerative braking mode or the four-wheel drive mode. The invention omits the middle drive device in a traditional four-wheel drive vehicle, has higher drive flexibility, can reduce the automobile weight, not only can meet the requirements of a SUV vehicle for the complete-vehicle power performance, trafficability characteristic and the like, but also can achieve the purposes of energy saving and emission reduction.

A method for operating a powertrain in a vehicle is provided. The powertrain includes an electric drive and an internal combustion engine. The method comprises providing torque to drive the vehicle from both the electric drive and the engine, where engine torque is varied within an allowable range; and when operating the engine at an edge of the range, adjusting the range based on whether a selected operating condition can be provided by the engine.

A vehicle transmission includes a differential gear set having five coaxial gear elements and an output member. Two of the gear elements are controllable via torque transmitting mechanisms such as electric motors to establish a plurality of speed ratios between the input shaft and the output shaft. Two of the other gear elements are selectively operatively connectable to an output shaft via a gear arrangement that allows for a plurality of speed ratios between the gear elements and the output shaft. Additional torque transmitting mechanisms such as clutches are selectively engageable to provide continuously variable speed ranges between the input shaft and the output shaft, fixed gear ratios and an electric drive mode. The various speed ratios enable a plurality of compound split operating modes as well as an input split mode.

A control system for an engineless, motor-driven lawnmower vehicle includes electric motors and controllers. At least one of the electric motors is an electric drive motor connected to a drive wheel of the lawnmower vehicle to enable transmission of motive power. At least one other electric motor is a mower-related electric motor connected to a lawnmower rotary tool to enable transmission of motive power. At least one of the controllers is a drive wheel controller which includes a drive wheel driver and which controls operation of the electric drive motor in response to a signal from at least one operator sensor for detecting an operation amount of at least one operator. At least one controller controls to activate or stop the mower-related electric motor. At least one controller is connected to the drive wheel controller and transmits a control signal thereto in response to a signal from the operator sensor.

A compressed air powered vehicle is disclosed. The vehicle includes a vehicle chassis having wheels. An electric drive motor drivingly engages at least one of the wheels. An electric generator is electrically connected to the electric drive motor, and an air motor drivingly engaging the electric generator. A compressed air source is pneumatically connected to the air motor, and an air compressor is provided on the chassis and pneumatically connected to the compressed air source to replenish compressed air in the compressed air tanks as needed.

An electrical generator, consisting of a high phase order generator and a high phase order cycloconverter. Output from said cycloconverter may be high phase order, three phase, single phase, or direct current. Output from said cycloconverter may be of arbitrary frequency, voltage, and phase.Power electronic components are smaller and more efficiently used. Slower and therefor less expensive devices may be beneficially used. Variable speed resources may be used without the use of a DC to DC converter, enhancing power production efficiency.In a beneficial embodiment of the present invention, said cycloconverter is used to provide power directly to a high phase order motor, whereby diesel electric drive means may be constructed to higher specific power and higher efficiency.