43results about How to "Increase working point" patented technology

An electromechanical infinite variable speed wind generating device is capable of realizing the real variable speed constant frequency operation, remarkably improving the reliability and the operation efficiency of a system as well as the operating factor of the wind energy, remarkably promoting the working point and the operating efficiency of an electrical variable transmission as well as the efficiency of the whole system. The device includes a wind machine (1), a mechanical speed increaser(2), an electrical transmission (3), a generator (4), a first power inverter (5), a second power inverter (6) and a third power inverter (7). If a DC power consists of an energy storage unit (storage battery, capacitor, etc), partial power can be stored in a form of electricity, or the energy in the energy storage can be released into an output shaft. When the power of the wind machine is larger than that of the generator, the redundant energy can be converted into electricity and stored; on the contrary, when the power of the wind machine is smaller than that of the generator, the energy in the energy storage unit can be released to complement the insufficiency of the inputted power.

The invention discloses a mid-series type hybrid permanent-magnet adjustable flux motor having passive adjustable flux magnetic barriers, and belongs to the field of permanent-magnet motors, and solves the problem that advantages of serial and parallel hybrid permanent-magnet adjustable flux motors cannot be combined. The mid-series type hybrid permanent-magnet adjustable flux motor comprises a stator iron core, an armature winding, a rotor iron core and a rotating shaft; the rotor iron core is fixed on the rotating shaft, and is positioned inside the stator iron core; the armature winding isarranged on the stator iron core; the mid-series type hybrid permanent-magnet adjustable flux motor further comprises low-coercivity permanent-magnet slots, low-coercivity permanent magnets, radial slots, high-coercivity permanent magnets and the passive adjustable flux magnetic barriers; the low-coercivity permanent-magnet slots and the radial slots are distributed on the rotor iron core alternately and uniformly along a circumferential direction; the low-coercivity permanent-magnet slots and the radial slots are penetrated through the whole motor along an axial direction; the low-coercivitypermanent magnets are installed in the low-coercivity permanent-magnet slots; and the high-coercivity permanent magnets and the passive adjustable flux magnetic barriers are jointly installed in the radial slots.

A differential magnet-control shape-memory alloy performer includes MSMA elements, a magnet, an excitation coil, iron-core, two pairs of magnet baffle plates, a connecter and an excitation circuit controller. Excitation coil is winded on the iron-core laminated by dynamic steel, the connector is at center of the gap preserved between two cores, the MSMA elements magnet baffle plates and the magnet are set symmetrically along the gap from the connector to both sides, the two cores are connected by a press board and screws, finally, the excitation coil is connected to the current controller. The magnet generates bias magnetic fields with equal diameter and same direction in two MSMA elements and the excitation coil current generates a control magnetic field in equal diameter and counter direction, one field is increased, the other is reduced by laminating the two fields. The connector moves since the deformation volumes of the two MSMA elements are different to control the shift of the performer.

The invention discloses a rotor structure used for a tangential permanent magnet direct current brushless motor, and the tangential permanent magnet direct current brushless motor. The rotor structure comprises a rotor iron core, tangential permanent magnets and a rotation shaft; an even number of tangential permanent magnet grooves are formed in the circumference of the rotor iron core radially at the equal intervals; the tangential permanent magnets with the opposite polarities are arranged in the adjacent tangential permanent magnet grooves; the tangential permanent magnets are connected with or disconnected from the near air gap side; the central symmetry of the rotor iron core is maintained; the sides, close to the rotation shaft, of the tangential permanent magnet grooves are communicated with flux-insulation grooves on the two sides of the tangential permanent magnet grooves; the near air gap side of the flux-insulation grooves and the central line of the corresponding tangential permanent magnet grooves extend outwardly at an angle of alpha; and a radially-distributed flux-insulation bridge is formed between the adjacent flux-insulation grooves. The rotor structure used for the tangential permanent magnet direct current brushless motor is simple and compact in structure, small in magnetic leakage factor, high in mechanical strength, convenient to produce, low in manufacturing cost, higher in resistance to demagnetization, and high in overload capacity, so that the tangential permanent magnet direct current brushless motor is higher in torque / current ratio, torque / volume ratio and motor efficiency; and therefore, the rotor structure used for the tangential permanent magnet direct current brushless motor, and the tangential permanent magnet direct current brushless motor are brighter in the application prospects.

The invention discloses an analytical algorithm for optimization design of magnetic conductivity of a permanent-magnet-motor sheath. The analytical algorithm includes creating a permanent-magnet-motor equivalent model and a permanent-magnet-motor equivalent magnetic circuit, determining a magnetic leakage coefficient according to an undetermined coefficient by the iterative convergence method and calculating an induced electromotive force. Through the analytical algorithm and setting of corresponding variables, motors in different sizes can be analyzed rapidly, certain universality is realized during calculation and analysis, and analysis of electromagnetic fields is facilitated. According to the design method, the magnetic conductivity of the magnetic sheath is set as a variable, so that influences of the magnetic sheath on air gap fields and induced electromotive forces of the motors can be analyzed rapidly, and further optimization design of the magnetic conductivity of the sheath is performed.

A rotor, an axial gap type motor comprising the rotor having reverse salient polarities and rotatable around a prescribed axis, a motor driving method, and a compressor. A plurality of magnets (12a, 12b) are annularly disposed on a substrate (11) with their polarities set symmetrical about a shaft hole (10). For example, the magnets (12a, 12b) present N-poles and S-poles on their stator side (toward you from paper surface). The plurality of magnetic substances (13a, 13b) are disposed vertically to the rotating axis direction, more specifically, extendedly between the magnets (12a, 12b).

The invention relates to a high-torque-density asymmetrical rotor structure. The rotor structure comprises a one-way displacement asymmetrical rotor structure and a two-way displacement asymmetrical rotor structure. Ferrite permanent magnets and neodymium-iron-boron permanent magnets are distributed on a rotor, the ferrite permanent magnets are distributed in a spoke shape, and the neodymium-iron-boron permanent magnets are distributed in a linear shape and arranged on the outer circle of the rotor. The axis of each neodymium-iron-boron permanent magnet of the one-way displacement structure anticlockwise deflects by an angle alpha from the central line of the ferrite permanent magnet adjacent to the neodymium-iron-boron permanent magnet of the one-way displacement structure; the neodymium-iron-boron permanent magnets of the two-way displacement structures clockwise and anticlockwise rotate by an angle beta and an angle gamma respectively. By means of the hybrid permanent magnet structure, the peak hybrid permanent-magnet torque and the peak reluctance torque reach the maximum at the same time at a same current angle, and the permanent-magnet utilization rate and the output torque of a motor are improved; the air-gap flux density waveform is effectively improved, the cogging torque and the torque pulsation are reduced, and the core loss and the eddy-current loss are reduced.

The invention discloses a split type combined permanent magnet brushless motor for an electric vehicle. A rotor is coaxially positioned in the internal of a stator; a rectangular neodymium iron boron permanent magnet steel and two same rectangular ferrite permanent magnet steels are fixedly embedded in each pole of the rotor; the neodymium iron boron permanent magnet steels are close to air gaps and are symmetrical relative to the central line of the rotor poles; the two ferrite permanent magnet steels are close to a rotation shaft, are distributed on the two sides of the central line of the rotor poles and are symmetrical relative to the central line of the rotor poles; a magnetic conductive bridge is between the two ferrite permanent magnet steels; the permanent magnet steel on each pole is magnetized along the tangential direction of the circumference; the magnetizing directions on the same pole are the same, and the magnetizing directions on the adjacent two poles are opposite; the rare earth permanent magnet material and the non-rare-earth ferrite permanent magnet material are adopted at the same time; on the basis of ensuring the power density and the torque density of the permanent magnet motor with a small amount of rare earth, the cost of the motor is reduced by more than 50%; and in addition, the requirements on the torque and the power in the electric vehicle applications can be met on the premise of keeping the relatively high power density and the torque density.

The invention discloses a double-V-shaped hybrid permanent magnet adjustable magnetic flux memory motor, and belongs to the field of permanent magnet motors. According to the invention, the problem inthe prior art that the advantages of serial and parallel hybrid permanent magnet adjustable magnetic flux motors cannot be considered at the same time can be solved. According to the technical schemeof the invention, 2P V-shaped low-coercive-force permanent magnet grooves and V-shaped high-coercive-force permanent magnet grooves are alternately and uniformly formed in a rotor iron core in the circumferential direction. Each V-shaped low-coercive-force permanent magnet groove is provided with a pair of low-coercive-force permanent magnets. Each V-shaped high-coercive-force permanent magnet groove is provided with a pair of high-coercive-force permanent magnets. Each straight groove of each V-shaped high-coercive-force permanent magnet groove is provided with an additional magnetic flux path. A pair of low-coercive-force permanent magnets of the V-shaped low-coercive-force permanent magnet grooves and the high-coercive-force permanent magnets in the two V-shaped straight grooves adjacent to the low-coercive-force permanent magnet grooves are combined to form a magnetic pole. The V-shaped low-coercive-force permanent magnet grooves and the V-shaped high-coercive-force permanent magnet grooves penetrate through the whole motor in the axial direction.

FIELD OF THE INVENTION that present invention relate to the field of hybrid vehicles, and more particularly to hybrid powertrain and hybrid vehicles. The hybrid system includes a transmission including a first input shaft, a second input shaft, an output shaft, a plurality of synchronous engagement mechanisms and a plurality of gear gears disposed on each shaft, each shaft being selectively drivably coupled through the plurality of synchronous engagement mechanisms and the plurality of gear gears; An engine and a clutch, the engine being drivingly coupled to the first input shaft via the clutch; A first motor having an input / output shaft drivingly coupled to a second input shaft; And a second motor whose input / output shaft is drivingly coupled to the output shaft. Thus, when the engine andthe electric motor are used for driving, the speed of the engine and the speed of the electric motor do not have to be the same, so that the problem that the operating point of the engine is limitedcan be avoided; In addition, the most efficient operating point of the engine and the most efficient operating point of the motor can be realized simultaneously.

A method of manufacturing a bonded-magnet rotor of the present invention comprises: a step for forming bonded-magnet compacts; and an arranging step for integrating an inner-diameter supporting jig, a rotor core, and a rotor-core supporting jig, arranging the bonded-magnet compacts onto the outer circumference of the inner-diameter supporting jig, and arranging an outer-diameter supporting magnet-pressing jig for supporting the outer circumference face. The method of manufacturing a bonded-magnet rotor further comprises: a deformation step for pressing the bonded-magnet compacts with a molding jig to move the bonded-magnet compacts to the rotor core, and deforming the bonded-magnet compacts so as to match the outer circumference dimension of the rotor core; a joining step for joining end sections of adjacent bonded-magnet compacts with each other; and an integrating step for compressing the bonded-magnet compacts to integrate the bonded-magnet compacts with the rotor core. In such a way, bonded-magnet rotors with high precision in the shapes thereof can be attained.

The invention discloses a hybrid excitation permanent magnet brushless motor for an electric vehicle. A rotor is internally embedded with an inner layer of permanent magnetic steels and an outer layer of permanent magnetic steels distributed uniformly along the circumferential direction; V-type NdFeB permanent magnetic steels are in the outer layer; spoke-shaped ferrite permanent magnetic steels are in the inner layer; the two kinds of permanent magnetic steels are located on the same pole; the NdFeB permanent magnetic steels and the ferrite permanent magnetic steels are symmetrical about the central axis of the pole; the V-type openings of the NdFeB permanent magnetic steels face the ferrite permanent magnetic steels; each NdFeB permanent magnetic steel is composed of a first NdFeB permanent magnetic steel and a second NdFeB permanent magnetic steel which are the same and are symmetrical about the central axis of the pole; and the top parts of the V-type openings of the NdFeB permanent magnetic steels and the outer ends of the ferrite permanent magnetic steels are directly fixedly connected. by adopting a rare earth permanent magnetic steel and ferrite hybrid excitation mode, parallel connection of the two kinds of permanent magnetic steel main magnetic circuits is realized, and torque density and power density of the motor are further improved.

The invention discloses a permanent magnet synchronous direct-drive motor. A rotor iron core sleeves a shaft. The outer periphery of the rotor iron core is evenly equipped with a plurality of semi-open slots. A plurality of permanent magnets are adhered to the outer periphery of the rotor iron core. Epoxy resin is arranged among the permanent magnets and among the semi-open slots through embedding. The two end faces of the rotor iron core are equipped with non-magnetic-conductive metal end plates. A stator iron core of a stator is evenly equipped with a plurality of open slots at the periphery. Notches of the open slots face the inner side of the stator, and stator windings are disposed in the open slots respectively. The notches of the open slots are provided with magnetic conductive blocks, and are plugged by the magnetic conductive blocks. The motor of the invention is increased in pass mass ratio, exhibits high structural reliability, is easy to manufacture, and can response quickly. The harmonic wave content of an air gap magnetic field of the permanent magnet motor and the rotor loss of the motor are reduced, the magnetic leakage coefficient and the reactance of the motor are increased, short circuit currents are minimized, the operating points of the permanent magnets are improved, and the reliability of the permanent magnet synchronous direct-drive motor is improved.

In a phase discriminator device for receiving, as input, a complex signal whose argument represents a phase error, and for producing, as output, an estimate of the phase error for each signal sample Zn+1 received, the device includes a frequency discriminator and a computation part for determining the phase estimate obtained at an instant (N+1)T1. The computation part determines the phase estimate according to predetermined relations, and T1 is the time interval between two samples Zn and Zn+1, received consecutively.

The invention discloses a U-shaped structure magnetism gathering type permanent magnet motor. The permanent magnet motor mainly structurally comprises a rotor and a stator and can be a linear motor or a rotary motor. The permanent magnet motor is mainly characterized in that the stator (mover) is of a U-shaped structure, the mover (stator) is embedded into the U-shaped stator (mover), and a certain air gap is kept between the mover (stator) and the U-shaped stator (mover). The rotor and the stator are provided with a plurality of permanent magnets which are installed according to a characteristic installation mode, a strong magnetic gathering effect is achieved, a magnetic field working point of a main magnetic circuit is remarkably increased, a magnetic leakage coefficient is reduced, then higher thrust density is obtained under the condition of smaller volume and weight, and meanwhile the magnetic field magnetic field magnetic field permanent magnet motor has lower cost and a simpler assembly mode. In addition, by saving the number of permanent magnets on the U-shaped stator (mover), the stator (mover) non-magnetic track motor structure can be simplified into a stator (mover) non-magnetic track motor structure which is lower in cost, simpler to assemble and more suitable for long-stroke occasions.

The invention relates to a magnetic circuit split type V-shaped parallel combined magnetic pole adjustable magnetic flux motor with a double-layer magnetic barrier, belongs to the field of a permanentmagnetic motor and aims to solve a problem that a motor utilizing the high coercive and low coercive permanent magnet combined magnetic pole structure has the function of suppressing demagnetizationof a high coercive permanent magnet is solved. The motor is characterized in that a V-shaped axially-through high coercive permanent magnet slot is disposed under each pole of a rotor core, a pair ofrectangular axially-through low coercive permanent magnet slots are symmetrically disposed under each pole of the rotor core, two slot ports of the high coercive permanent magnet slot are respectivelyconnected with one low coercive permanent magnet slot, two adjacent low coercive permanent magnet slots are parallel under different poles, the rotor core in the enclosed area of the two low coercivepermanent magnet slots and the high coercive permanent magnet slot under the same pole is symmetrically provided with a pair of double-layered arc-shaped magnetic barriers, two long arcs of the adjacent double-layered arc-shaped magnetic barriers under different poles are on the same concave arc, and two short arcs are on the same concave arc.

The invention discloses a motor rotor punching sheet, a permanent magnet driving motor rotor body and a permanent magnet driving motor, and relates to the technical field of motors. The motor rotor punching sheet comprises a rotating shaft hole, and is further provided with a plurality of permanent magnet grooves which are used for placing permanent magnets and are uniformly distributed on the same circumference and concentric with the rotating shaft hole, two adjacent permanent magnet grooves are combined to form a U-shaped or V-shaped structure, the permanent magnets are embedded into the permanent magnet grooves in an N-pole and S-pole alternating mode, the torque of a rotor combined by the rotor punching sheet approximates a sine wave, and the permanent magnets are distributed along the circumference and embedded in the rotor body in an approximately sine mode, so that the torque ripple is small, the control accuracy of a control system is high, the flux weakening acceleration of apermanent magnet synchronous motor is facilitated, and the performance of the permanent magnets is better improved.

An optical receiver suitable for connecting to a photodiode generating a photocurrent with a sensing resistor and a diode circuit in parallel with the sensing resistor to limit the voltage across the sensing resistor. The diode circuit allows for a larger resistor providing greater sensitivity without risking violating the necessary headroom available to the photodiode.

The invention relates to a fluid magnetic processor. The fluid magnetic processor is composed of a body (2), an inlet joint (1) and an outlet joint (3). The inlet joint (1) and the outlet joint (3) are connected to the body (2). The body (2) is composed of a cover plate (21), a housing (23) and a magnetic steel combination (27). The magnetic steel combination (27) is a permanent magnet string enclosed by end-to-end connection of multiple permanent magnet sources along a magnetism direction from N poles to S poles. An air gap is kept between adjacent permanent magnet sources. The permanent magnet sources are different from the vertical sectional area of the magnetism direction in terms of the area. As for the permanent magnet sources, the middle areas are the biggest with areas close to air gaps gradually becoming smaller. Compared with the prior art, the fluid magnetic processor has the following beneficial effects: high magnetic field intensity and high magnetic field gradient for the working air gaps are realized.

The invention discloses a series-parallel magnetic pole type hybrid permanent magnet memory motor. The motor comprises a stator, an armature winding, a hybrid permanent magnet rotor and a rotating shaft. The armature winding is arranged on the stator; the hybrid permanent magnet rotor is arranged inside the stator; the rotating shaft is arranged inside the hybrid permanent magnet rotor; and a plurality of V-shaped magnetic poles with the same structural form are evenly distributed in a circumferential direction of the hybrid permanent magnet rotor, each V-shaped magnetic pole comprises a firstpermanent magnet and a second permanent magnet which are symmetrically distributed in a V-shaped radial direction, a coercive force of the first permanent magnet is smaller than that of the second permanent magnet, and the first permanent magnet and the second permanent magnet are magnetized in a tangential direction. In the invention, a design space of the rotor can be further expanded through the series-parallel magnetic pole structure so that a magnetic regulation range of the motor is improved, and the motor has high torque density and a strong magnetic stabilization capability.

The invention discloses a three-section type variable magnetic circuit series-parallel connection adjustable magnetic flux motor, belongs to the field of permanent magnet motors, and aims at solving the problems of an existing adjustable magnetic flux motor. The motor comprises a stator core, a stator winding, a rotor core and a rotating shaft. The rotor iron core is fixed on the rotating shaft and located in the stator iron core, and the armature winding is arranged on the stator iron core; the series-parallel connection adjustable magnetic pole comprises a first high-coercive-force permanent magnet, a first low-coercive-force permanent magnet, a second low-coercive-force permanent magnet and a second high-coercive-force permanent magnet; a V-shaped permanent magnet groove and a linear permanent magnet groove are arranged below each pole of a rotor iron core, symmetry axes of the two permanent magnet grooves coincide, a pair of first high-coercive-force permanent magnets and a pair of first low-coercive-force permanent magnets which are connected in series are symmetrically installed in the V-shaped permanent magnet grooves close to the air gap side, and a pair of second low-coercive-force permanent magnets are symmetrically installed in the V-shaped permanent magnet grooves away from the air gap side. Second high-coercivity permanent magnets are installed in the linear permanent magnet grooves.