30results about How to "Increase the maximum torque" patented technology

The invention discloses a three-phase motor stator structure and motor. The stator comprises an annular stator core and stator windings arranged on the stator core; The inner wall of the stator core is provided with a plurality of slots; the stator windings comprise two winding elements connected in a parallel mode, and each winding element comprises three branches windings connected in a star-shaped mode; each branch winding comprises an outgoing line, a plurality of conducting bars and a neutral line, which are connected in order; the conducting bars are formed by two legs and a transition part connected between the two legs in an integrated mode, and the transition part comprises two parallel straight arms part and a u-shape part connected between the straight arms part in an integrated mode; each branch winding is provided with six circles of windings along the circumferential direction of the stator core, and each circle of winding forms three turns of active winding. Optimizing the stator structure makes it low of the motor no-loads opposite potential harmonic and the electromagnetic noise, and insures the torque of the motor large enough under the condition of the maximum torque and the maximum velocity, and it is suitable for drive motor of electric vehicle.

The invention provides a stator for an axial clearance type motor and the axial clearance type motor. Stator teeth stator windings are symmetrically arranged on the two end faces of the stator to support the axial clearance type motor to adopt a dual-rotor mode which can make the stress of a rotating shaft balanced, so that improvement in the bearable maximum torque and rotating speed of the axial clearance type motor is facilitated. In addition, a stator slot formed on the stator replaces a collector ring and a cooling shell, so that the structure of the axial clearance type motor can be simplified. Moreover, clearance slots of the stator are equal in width along a radial direction, so that the utilization of air clearances is improved; and chambers are formed at the end part edges of the stator teeth of the stator, so that the dispersion of lines of magnetic force can be suppressed. Therefore, the specific power of the axial clearance type motor can be improved.

The invention provides a hybrid supercharging system, a control method of the hybrid supercharging system, and a vehicle. The system comprises an electronic supercharger, an exhaust gas turbosupercharger and a controller, wherein the controller is separately connected with the electronic supercharger and the exhaust gas turbosupercharger, and is used for obtaining the accelerator pedal change rate of the vehicle; when the accelerator pedal change rate is larger than a first preset change rate and the allowed start-up conditions of the electronic supercharger are met, the electronic supercharger is controlled by the controller to start up, and an engine is supercharged at the same time by the electronic supercharger and the exhaust gas turbosupercharger; and when the accelerator pedal change rate is smaller than the first preset change rate, the electronic supercharger is controlled by the controller to shut down, and the engine is supercharged by the exhaust gas turbosupercharger. Through the adoption of the hybrid supercharging system disclosed by the invention, the coupling problem of the electronic supercharger and the exhaust gas turbosupercharger is solved, and the maximum torque and the acceleration response of the engine are increased, so that the acceleration property of the whole vehicle is improved.

The invention relates to large-discharge electric submerged screw pump oil extracting equipment. Compared with the traditional electric submerged screw pump oil extracting equipment which belongs to a large-discharge series and also mainly comprises an underground motor, an underground rotating type mechanical drive device, an underground screw pump, and the like, the large-discharge electric submerged screw pump oil extracting equipment has the technical scheme key that the underground screw pump is connected with an underground multistage motor by the underground rotating type mechanical drive device; the screw pump is rigidly fixed on the sleeve pipe wall of an oil well by adopting the underground multistage motor with high torque output and vibration resistance, a drum-gear coupling with high torque output, vibration resistance and an opening type structure, a series combined stopping type bear joint and an underground rotating type mechanical drive device of a compensating type lubricating oil tank through an anchoring device; the problem of oil leakage of an oil pipe of a large-gradient well or a horizontal well is solved by adopting a hydraulic type oil pipe oil drainer; and the large discharge of the electric submerged screw pump is realized by the technical measures, and thus the invention can be used for the oil well with large-discharge (more than 200m<3> / d) on the electric submerged screw pump.

The invention disclose a non-salient pole type hybrid excitation motor constant-power loss model prediction control method, and realizes quick and stable operation of a hybrid excitation synchronous motor while constant power loss is maintained. By comparison of given power loss and actual power loss and by combination of a constant power loss control strategy, a d-axis reference current i<dref>,a q-axis reference current i<qref>, and an excitation reference current i<fref> are calculated; and model prediction control is performed based on a voltage prediction model, a reference current and an actual current feedback value, and non-salient pole type hybrid excitation synchronous motor constant-power loss model prediction control is realized finally. By virtue of the control method provided by the invention, the output capability of the motor and an inverter is given into full play; the maximum output torque is improved in a wide speed range, the speed regulation range is expanded, andsystem efficiency is improved; high dynamic response, low torque fluctuation, and high interference resistance and robustness are realized; and in addition, the control method is simple and can be realized easily, and real-time environment application can be facilitated.

The invention relates to a method for controlling a friction clutch (3) in a vehicular drive line further provided with an engine (1), a friction-type continuously variable transmission (2) and a driven wheel (5), which method comprises the steps of controlling a slip value (Cs) of the clutch (3), of detecting the occurrence of a torque jolt (block A) and, if no such torque jolt is detected, of performing the clutch slip (Cs) control closed-loop (block B), or, if a torque jolt is detected, of performing the clutch slip (Cs) control open-loop (block C).

The invention relates to a one-way clutch retainer, which comprises two circular flanged disks (1,2; 11,12); the flanged disks are connected with each other and arranged with an axial gap; action bodies (4; 14) are disposed there between; the action bodies can be arranged in the retainer by a swinging way and is pre-tightened on the joint direction by a spiral torsion spring; the action bodies perform the acting swinging motion on the separation direction against the spring under the effect of centrifugal force; at least two guiding surfaces (5c,5d; 15) are arranged for each action body in its axial extension; a guiding surface is joined on the regions on the end peripheries of the action bodies, can guide the action body at least on the circumferential direction of the flanged disk and has a fracture on at least the radial inner side; the action body is passed throught the fracture and is extended towards an action surface on the radial inner side; the axial length of the action surface on the radial inner side of the action body is equal to the total length of the action body. According to the invention, The guiding surfaces are each formed integrally by recesses on opposite end faces of the flanged disks.

The invention discloses a switch reluctance motor. By changing of top end radian of each rotor pole tooth, a variable air gap is formed between a rotor and a stator, so that inductance of the motor ischanged, a starting torque is increased, an output torque is increased, and torque ripple is reduced. By adoption of a variable air gap structure, the stator on the inner periphery comprises twenty-four stator tooth poles, the rotor on the outer periphery comprises eighteen rotor pole teeth, twenty-four winding coils include four phases A, B, C and D, every six windings in each phase are in series connection, the maximum torque of each single phase is high, each position of the maximum torque is appropriate, and torque ripple reduction and output torque increase are realized after superposition. Under a starting condition, in single-phase excitation, the peak torque is increased by 40% due to changing of an inductance performance curve; under a rated speed condition, due to air gap variability, the rotor saturation degree is decreased, the average output torque is increased by 1.4%, and the torque ripple is reduced by 38%.

The invention discloses a double-VGT two-stage supercharged diesel engine variable altitude simulation test system and method. The double-VGT two-stage adjustable supercharged diesel engine variable altitude simulation test system comprises an environment pressure simulation system, an engine power measuring system, a combustion analysis system, a calibration system, a high-pressure stage VGT, namely, an HVGT, a low-pressure stage VGT, namely, an LVGT, a diesel engine control unit ECU and a supercharger control unit TCU, the ECU controls the oil injection quantity, the oil injection advance angle and the common rail pressure in real time, and the TCU controls the blade opening degree of the high-pressure stage VGT and the blade opening degree of the low-pressure stage VGT. According to the method, under the conditions of variable altitudes and variable working conditions, based on the optimal MAP of oil injection parameters and pressurization control parameters obtained through coupling optimization of a neural network and a genetic algorithm, an eight-factor and three-level orthogonal test is designed, and a two-stage pressurization and oil injection parameter variable-altitude collaborative calibration test is carried out. Oil-gas-chamber optimal matching of a 0-5500 m diesel engine is achieved, and the variable altitude and variable working condition dynamic property and economical efficiency of the diesel engine are greatly improved.

The invention discloses a maintenance suspending ladder for municipal bridge engineering, structurally comprising a winding box, a suspending rope ladder, a motor, a controller, a cooling fan, and a base; the top end of the suspending rope ladder is movably connected with a mechanical part inside the winding box; a spindle of the motor is fixed horizontally to the right of the outer wall of the winding box via bots; the cooling fan is mounted in a cavity in the front end of the controller via screws; the top end of the base is welded horizontally to the bottom end of the winding box; the controller is electrically connected with a rotor of the motor via a wire. The maintenance suspending ladder for municipal bridge engineering has the advantages that the suspending rope ladder is operatedvia a ladder winder, the modified maintenance suspending ladder is fixed to the upper end of a bridge and is convenient to operate, the ladder is placed and wound freely via a remote control, and efficiency of inspection personnel is greatly improved.

The invention relates to an energy management system capable of being remotely controlled and switched. The energy management system is characterized by comprising a supercapacitor, a motor, a wireless charging power supply, one or more new energy power supplies and an energy management control board, wherein the energy management control board comprises an energy switching module and a management module, the management module is used for controlling charging and discharging of the supercapacitor and controlling the energy switching module to switch the wireless charging power supply and the new energy power supply so as to be used for charging the supercapacitor, and the supercapacitor outputs electric power to drive the motor to operate. The energy management system enables a user to control and switch multiple power inputs conveniently to act as energy sources through wireless remote control. In addition, the supercapacitor is applied to replace a traditional battery to act as a power source of the motor, the energy conversion efficiency is improved, and the endurance is increased.

The invention discloses an excitation control method of a wide plate roller type straightening machine, and relates to the technical field of aluminum alloy plate straightening. The invention aims torealize the straightening of a wide plate. The excitation control method of the wide plate roller type straightening machine comprises the following steps of: collecting an actual rotating speed v ofa bottom straightening roller driving motor in the straightening machine, obtaining an adjusting magnetic flux phi1 according to the actual rotating speed v and a given rotating speed v1, obtaining anadjusting speed v2 according to the adjusting magnetic flux phi1, obtaining an adjusting torque according to the adjusting speed v2 and a given torque T, feeding back (1.4-1.5) phi to the straightening roller driving motor as an excitation control signal when T1 is greater than or equal to 1.4T, and feeding back phi to the straightening roller driving motor as an excitation control signal when T1is less than T. The excitation control method is suitable for the straightening of the wide plate.

The electric machine (1) has a drive shaft (2) on which a rotor (3) and a connector (4) are arranged. A partial actuated torque transmission connection between the rotor and the connector is formed in drive shaft. An attachment element (6) is provided for axially defining the connector into the direction turned away from the rotor. The drive shaft and the connector are made in active connection with a connector (18). An external teeth (19) of connector is engaged with an internal gear (10). An independent claim is included for assembly method of electric machine.

The invention provides a motor controller which can suppress the shortening of the power cycle life and the thermal cycle life of electrical semiconductor elements, and increase the maximum current of the motor controller and the maximum torque of the motor. The motor controller comprises a motor and a controller part which is used for controlling the motor. The controller part increases the maximum absolute value of the motor torque with the increasing of velocity absolute value when the absolute value of the motor velocity is lower than a specified value under instaneous driving of the motor.

The invention provides an induction motor flux weakening control method based on optimized six-beat operation, and belongs to the technical field of motor control. The control method comprises the following steps: firstly, a voltage given value in a flux weakening controller to be 2Udc / piis set so as to ensure that the system can reach a six-beat operation mode, and the frequency of a feedback current resonant filteris set to be a larger value between omega * c and 6 * omega s; when the rotating speed exceeds the rated rotating speed, the motor enters a flux weakening area; the inverter outputs six-beat voltage; the six-beat voltage causes six-time harmonic generation of current, feedback current with six-time harmonic passes through a resonance filter and then is subtracted from a given value to enter a complex vector current regulator, the current regulator generates given voltage, and inverter trigger pulse is generated through an SVPWM modulation strategy to control a motor to operate in the flux weakening area. The method is applied to six-beat operation fluxweakening control of the induction motor.

A control apparatus (137) is applied to a vehicle including (i) a rotating electrical machine (10) and (ii) a wheel speed sensor (134) detecting a wheel speed. The rotating electrical machine includes: (i) a slotless stator (50) including a stator winding without slots formed by magnetic teeth; and (ii) a rotor (40), wherein the rotor (40) comprises a magnet unit (42). The control apparatus comprises: (i) a setting circuit (139) which is configured to set a rotation angle of the rotating electrical machine based on an estimated value of the rotation angle which is estimated based on a detection value of the wheel speed sensor; and a drive controller (110) which is configured to control the drive of the rotating electrical machine based on the rotation angle set by the setting circuit.

Timepiece including: a spring housed in said barrel, an electric power generator coupled to said barrel, a rectifier circuit connected to said generator, and a regulator circuit supplied by the direct voltage from the rectifier circuit and intended to control the rotational speed of the generator. The rectifier circuit comprises: a voltage doubler rectifier connected to the output of the generator, a first capacitor and a first diode connected in series between said first output terminal of the rectifier and the first output terminal of the generator, a second capacitor and a second diode connected in series between the first output terminal of the generator and the second output terminal of the rectifier.

The invention discloses a permanent magnet synchronous motor rotor used for driving a new energy automobile. Permanent magnet magnetic steel (3) is placed in linear permanent magnet magnetic steel grooves (4) to compose V-shaped magnetic steel of a pole of a rotor (2); magnetism-isolating magnetic bridges (5) are arranged among the permanent magnet magnetic steel (3); big grooves (1) are closed triangular grooves; small grooves (2) are open triangular grooves; both the big grooves (1) and the small grooves (2) are in the shapes of isosceles triangles and 14-28 big grooves and 14-28 small grooves are provided; the big grooves (1) and the small grooves (2) are arranged at intervals and are uniformly distributed in the periphery of the rotor; the bisector of the top angle of each isosceles triangle shaped small groove (2) is overlapped with the radius of the rotor (2), and pointing direction of each top angle is opposite to the center (O) of the rotor; the bisector of the top angle of each isosceles triangle shaped big groove (1) is overlapped with the radius of the rotor (2), and each top angle points towards the center (O) of the rotor; and the polarity of the permanent magnet magnetic steel (3) is opposite to that of each permanent magnet magnetic steel groove (4).

A permanent magnet rotating electrical machine includes a stator and a rotatable, approximately cylindrical rotor. The rotor includes a shaft, rotor cores, radial permanent magnets, and side plates. The shaft includes projected and depressed engagement portions. The rotor cores are separated from each other on a magnetic pole basis. The rotor cores constitute circumferentially arranged pole shoes. The radial permanent magnets are each on a circumferential side of a pole shoe among the pole shoes. Each of the radial permanent magnets is engaged with an engagement portion among the engagement portions of the shaft. The side plates are on axial ends of the rotor. The side plates support the rotor cores and the permanent magnets in a radial direction of the rotor.

The invention discloses a three-phase asynchronous motor with ultrahigh efficiency and high torque. The three-phase asynchronous motor comprises a base, a fixed block and a shell; the fixed block is arranged at an upper side of the base, the shell is arranged at the upper side of the fixed block, a bearing outer cover is arranged at one side of the shell, and an end cover is arranged in the bearing outer cover; a bearing inner cover is arranged at one side, far away from the bearing outer cover, of the end cover, and a rotor is arranged in the bearing inner cover. The motor disclosed by the invention has the advantages that the start current can be reduced by 2-10% by utilizing a skin effect, the impact on the motor by the peak current and surge current of the surrounding grid can be reduced, the variable loss and invariable loss of the motor can be realized, and the motor efficiency can be improved; by arranging the novel alloy cast-aluminum rotor and motor optimization design, the motor has a flexible mechanical feature, and the motor can be adapted to a demand of the oil production technology of the petroleum industry preferably.

The invention discloses a position-limiting shock absorber structure, which includes a fixed cylinder, a spring and a fixed plate. The fixed cylinder is composed of an inner cylinder body and an outer cavity, and both ends of the bottom and top of the fixed cylinder pass through reserved grooves. A force column is installed, the force column is located in the inner cylinder, a movable plug is connected to one end of the force column, a buffer block is arranged inside the movable plug, a hollow cavity is arranged between the buffer blocks, the bottom of the hollow cavity and The tops are equipped with jacking posts through sleeve holes, one end of the jacking pins is connected to the buffer block, the other end of the jacking pins is located in the hollow cavity and connected with a pressure plate, and the two ends of the hollow cavity are provided with infusion tubes, and one end of the infusion tubes is connected to the outer tube. A cavity, a fixing block is arranged on the outside of the fixing cylinder, and a reinforcing layer is arranged on the outer surface of the fixing cylinder. The invention can conveniently carry out two-way shock absorption, can also conveniently reduce the length, can conveniently adjust the feedback time, has high overall strength, and is suitable for being widely popularized and used.

The invention discloses a limit shock absorber structure which comprises a fixed cylinder, a spring and a fixed disc. The fixed cylinder is composed of an inner cylinder body and an outer cavity body,two ends of the bottom and the top of the fixed cylinder are respectively provided with a force column through a reserved groove, the force columns are positioned in the inner cylinder body, one endof each force column is connected with a movable plug, the inner side of each movable plug is provided with a buffer block, and a hollow cavity is arranged between the buffer blocks, top columns are arranged at the bottom and the top of the hollow cavity through sleeve holes, one end of each top column is connected with the corresponding buffer block, the other end of each top column is positionedin the hollow cavity and connected with a pressing plate, two ends of the hollow cavity are provided with infusion tubes, one end of each infusion tube is connected with the outer cavity, a fixing block is arranged outside the fixed cylinder, and a reinforcing layer is arranged on the outer surface layer of the fixed cylinder. According to the limit shock absorber structure, bidirectional shock absorption can be conveniently carried out, the length can be conveniently reduced, the feedback time can be conveniently adjusted, the integral strength is high, and the limit shock absorber structureis suitable for being widely popularized and used.

A free-wheel cage ring, having two annular flanged disks that extend radially and are connected to each other to form an axial intermediate space and have clamping bodies therebetween pivotally arranged in the cage ring and are biased for coupling by a spring, the clamping bodies perform, due to centrifugal force, a pivoting motion for decoupling against the spring force, and at least two guide surfaces are allocated to each clamping body in its axial extent, that engage opposite end peripheral regions of the clamping body, guide them at least in the peripheral direction, and have a break through which the clamping bodies extend to a radially inner clamping surface. The axial length of the clamping body radially inner clamping surface is equal to the total length of the clamping body. The guide surfaces are each formed integrally by recesses on opposite end faces of the flanged disks.

The invention relates to a self-starting rare-earth permanent magnet synchronous motor rotor. A novel rotor structure is designed by comprehensive analysis and calculation according to the structure characteristics of the rare-earth permanent magnet synchronous motor, so that not only is the pull-in torque of the motor improved, but also harmonic torque is effectively inhibited, and iron loss is reduced. Especially, a deep rotor-bar which is mainly used for starting is replaced with a matched design of large and small grooves, the cogging effect is reduced, and the effective utilization area of the rotor is increased, so that the efficiency of the motor is improved, the power factor is increased, the maximal torque is increased, a space is saved for teeth and yokes of the rotor, the design method capable of optimizing the overall size of the motor can be achieved, and the starting performance and the working characteristics of the motor are improved.

A motor has windings and a control device, which applies appropriately one-way current to each of the windings. Two full-pitch windings, which are located adjacently to both ends of an A-phase stator magnetic pole, and driving transistors are connected in series to each other to supply an A-phase current component, thereby exciting an A-phase magnetic flux component passing through the A-phase stator magnetic pole, resulting in generation of torque. This excitation is also applied to other phases. The respective stator magnetic poles can be excited selectively, and voltages across both ends of the serially connected windings become a voltage for corresponding magnetic flux components which should be provided by the windings, thus providing a more simplified motor structure and higher motor performance. The windings and transistors can be used commonly in two phases, providing an improved usage rate, thus making the motor more compact in size and reducing manufacturing cost.

The invention relates to an energy management system capable of being remotely controlled and switched. The energy management system is characterized by comprising a supercapacitor, a motor, a wireless charging power supply, one or more new energy power supplies and an energy management control board, wherein the energy management control board comprises an energy switching module and a management module, the management module is used for controlling charging and discharging of the supercapacitor and controlling the energy switching module to switch the wireless charging power supply and the new energy power supply so as to be used for charging the supercapacitor, and the supercapacitor outputs electric power to drive the motor to operate. The energy management system enables a user to control and switch multiple power inputs conveniently to act as energy sources through wireless remote control. In addition, the supercapacitor is applied to replace a traditional battery to act as a power source of the motor, the energy conversion efficiency is improved, and the endurance is increased.

The invention disclose a non-salient pole type hybrid excitation motor constant-power loss model prediction control method, and realizes quick and stable operation of a hybrid excitation synchronous motor while constant power loss is maintained. By comparison of given power loss and actual power loss and by combination of a constant power loss control strategy, a d-axis reference current i<dref>,a q-axis reference current i<qref>, and an excitation reference current i<fref> are calculated; and model prediction control is performed based on a voltage prediction model, a reference current and an actual current feedback value, and non-salient pole type hybrid excitation synchronous motor constant-power loss model prediction control is realized finally. By virtue of the control method provided by the invention, the output capability of the motor and an inverter is given into full play; the maximum output torque is improved in a wide speed range, the speed regulation range is expanded, andsystem efficiency is improved; high dynamic response, low torque fluctuation, and high interference resistance and robustness are realized; and in addition, the control method is simple and can be realized easily, and real-time environment application can be facilitated.