342 results about "Permanent magnet rotor" patented technology

The invention relates to the technical field of energy-saving permanent magnet motors, and discloses a permanent magnet rotor system capable of guaranteeing ultra-high-speed stability, which comprises a permanent magnet rotor and a controller, and is characterized in that the controller injects current synthesized by fundamental waves and specific space harmonics into a stator winding on the basis of not depending on rotor radial position feedback, so that the permanent magnet rotor is controlled to rotate; an electromagnetic potential well with radial self-recovery force is constructed in an air gap of the motor; moreover, the controller also monitors the change rate of an internal torque instruction, foreseeably and instantaneously reinforces the potential well to resist impact, and synchronously corrects the fundamental current to eliminate parasitic torque pulsation associated with reinforcement. And the rotor stability is converted from a dynamic adjustment problem depending on external high-speed closed-loop control to an intrinsic constraint problem of motor self-guarantee, so that the risk of failure caused by signal delay at an ultra-high speed in traditional reaction type control is reduced.

For interventional surgery, robot-assisted operation and image guidance are urgently required clinically. However, due to limitation of size, magnetic component interference and the like, tracking and positioning of magnetic imaging catheters in IVUS and OCT forms are difficult problems. The interventional imaging catheter, the six-degree-of-freedom positioning method, the six-degree-of-freedom positioning system, the six-degree-of-freedom positioning equipment and the medium are different from a magnetic positioning method of a transmission embedded sensor, and the interventional imaging catheter is compatible with a magnetic part in a permanent magnet rotor form. Meanwhile, in cooperation with a magnetic positioning search strategy for linearly solving an initial value, positioning of the catheter can be rapidly achieved.

The invention relates to a novel parallel pole-arc-changing hybrid excitation brushless synchronous generator, which comprises a first magnetic circuit, a second magnetic circuit and a third magnetic circuit, the first magnetic circuit is formed by an original stator permanent magnet rotor of the motor; corresponding hybrid excitation rotors are arranged on the left and right outer sides of the stator, and a second magnetic circuit is formed between the hybrid excitation rotors and the iron core of the stator; an excitation winding is further arranged on the outer side of the corresponding hybrid excitation rotor, and the excitation winding enables common teeth of the hybrid excitation rotor to be magnetized into different polarities, so that a third magnetic circuit for increasing or weakening magnetism is formed. The motor has the beneficial effects of wide rotating speed adjusting range, high power density and high efficiency.

An electric machine having a shaft, a rotor with a magnetic core comprising a series of stacked laminations and a plurality of seats oriented axially, a plurality of magnetic poles, each having two permanent magnets, and a stator. The magnetic core comprises first laminations alternated with different second laminations, with at least ten second laminations interposed between two first laminations. Each first lamination has, for each seat, two first fixing blades, which are parallel to each other, and arranged on the same side of the first seat and bent by 90° against a same larger side wall of a corresponding permanent magnet, and also has, for each seat, a second fixing blade, which is oriented perpendicular to the corresponding first fixing blades and bent by 90° against a smaller side wall of a corresponding first permanent magnet. Each second lamination lacks fixing blades bent against the corresponding permanent magnet.

The invention discloses a permanent magnet motor magnet performance degradation evaluation method, belongs to the field of permanent magnet motor tests, and is used for solving the technical problem that reversible demagnetization and irreversible demagnetization are difficult to effectively distinguish in the prior art. The method comprises the following steps: step 1, installing a selected adaptive permanent magnet rotor assembly on a motor installation seat of a test bed; 2, hardware debugging is completed; 3, test parameters are set, and a cooling module is started; 4, starting the to-be-tested permanent magnet motor according to a set rotating speed, gradually applying a load by a loading device according to a test requirement, and monitoring the running state of the motor in real time; step 5, collecting performance data of the permanent magnet motor to be tested according to a preset sampling frequency; step 6, repeating the steps 2-5 to carry out a cyclic test, wherein the cumulative operation time is greater than or equal to 100 hours; sampling is conducted after circulation, and the coercive force change rate delta Hcj and the residual magnetism change rate delta Br of the sample are measured. According to the invention, whether irreversible performance degradation of the magnet occurs can be determined.

The novel magnetic suspension bearingless motor comprises permanent magnet rotors, a main shaft and a stator assembly, the two permanent magnet rotors are coaxially arranged along the axial direction, the two permanent magnet rotors are respectively and fixedly connected with the main shaft, the number of magnetic poles of the two permanent magnet rotors is the same, and the arrangement directions of the magnetic poles are the same. The two stator assemblies are located on the outer sides of the two permanent magnet rotors respectively, and the two stator assemblies drive the two permanent magnet rotors to suspend and rotate through magnetic force respectively. The two stator assemblies correspond to the permanent magnet rotors respectively, two independent magnetic circuits are formed, the total electromagnetic force borne by the permanent magnet rotors is improved, and therefore under the condition that the sizes of motors are the same, larger power is provided for a main shaft, and the flow and lift of a pump are improved.

A permanent magnet rotor assembly for an electric motor, an electric vehicle, and a method are provided. The assembly includes an annular stack of rotor lamination layers ("rotor laminations") constructed from a magnetic core material. The rotor laminations have inboard axial surfaces that collectively define a set of first openings through the magnetic core material and a set of second openings through the magnetic core material. The annular stack includes a first arrangement of permanent magnets and a second arrangement of permanent magnets.

The present disclosure relates to an electromechanical apparatus (100) and to a transmission unit comprising the electro-mechanical apparatus (100) for changing motion parameters and to a vehicle comprising the transmission unit, the electro-mechanical apparatus (100) comprising a first rotating electromechanical ma-chine (110) comprising a first stator (112) and a first rotor (120), a second rotating electromechanical machine (130) having a smaller radial extension than the first rotating electromechanical machine (110) and comprising a second stator (132) and a second rotor (140), wherein the second rotating electromechanical ma-chine (130) is arranged radially within the first rotating electromechanical ma-chine (110) thereby forming an interleaving region (176) of the electromechanical apparatus (100), and wherein the first stator (112) and the second stator (132) are ironless, and wherein the first rotor (120) and the second rotor (140) are per-manent-magnet rotors or rotors comprising a winding for electrical excitation.

The invention discloses a high-inertia multi-port composite motor for new energy grid connection. The high-inertia multi-port composite motor comprises a brushless doubly-fed motor, an axial permanent magnet motor and a magnetic gear structure. The brushless doubly-fed motor comprises a radial stator and a squirrel cage rotor, a power winding and a control winding are arranged in the stator and serve as a first electric port and a second electric port respectively, the axial permanent magnet motor comprises an axial stator and an axial permanent magnet rotor, and an armature winding is arranged in the stator and serves as a third electric port. The magnetic gear structure is arranged on the inner side of the squirrel cage rotor and the outer side of the rotating shaft, a brushless doubly-fed motor rotor magnetic field is used as a modulation magnetic source, the phase and amplitude of the magnetic field are adjustable, dynamic adjustment of the transmission ratio of the magnetic gear is achieved through a control winding, and electromagnetic and mechanical dual coupling is achieved. The equivalent rotational inertia of the composite motor is obviously higher than that of a single machine, stronger inertia support and frequency stability can be provided for a power grid in a new energy grid connection process, and the composite motor is provided with three independent electric ports, realizes multi-mode operation, and is compact in structure and high in power density.

The invention provides a hybrid excitation magnetic circuit structure, a motor with the structure and a control method of the motor. According to the hybrid excitation magnetic circuit structure, basic magnetic flux is provided through a permanent magnet rotor assembly, the magnetic flux is dynamically adjusted through an electro-magnetic winding assembly, and superposition enhancement or partial counteracting of a main air gap magnetic field can be achieved only by switching the direction of electro-magnetic current; the output torque of the motor is obviously enhanced; and second-direction current is conducted in a constant power area to counteract part of magnetic flux and expand the speed regulation range of the motor, so that various working condition requirements can be met, and wide-range efficient operation is realized.

The application relates to the technical field of rotor detection, and discloses a motor rotor core permanent magnet detection method, which is characterized by comprising the following steps: S1, fixing a magnetic field detection device at a tangent point position of the permanent magnet rotor; placing a detection probe of the magnetic field detection device at a certain position away from the rotor, the magnetic field detection device needs to be aligned with the diameter of the rotor, and the spacing between the detection probe and the rotor can ensure that the magnetic tiles placed later will not contact the detection probe; S2, a speed detection motor detects the rotating speed and rotating position of the rotor while the motor drives the rotor to rotate. The application compares multiple'magnetic field strength-mechanical angle' models, and compares the magnetic field strengths under the four mechanical angles of 0-90 DEG, 90-180 DEG, 180-270 DEG and 270-360 DEG in the same coordinate system, so that whether the four main tiles on the rotor appear the phenomenon of magnetic field deficiency can be intuitively analyzed.

The invention belongs to the technical field of submersible pumps, and provides a medium-high-lift full-cross-flow submersible mixed-flow electric pump which comprises a water suction chamber, an impeller and a water outlet cylinder which are coaxially connected in sequence, a rotating shaft is arranged in the center of the impeller, the two ends of the rotating shaft are in rotatable supporting connection with the water suction chamber and the water outlet cylinder respectively, and a motor shell is arranged on the outer side of the impeller. The two ends of the motor shell are fixedly connected with the water suction chamber and the water outlet cylinder respectively, a wet stator is fixed to the inner side of the motor shell, a permanent magnet rotor is fixed to the outer side of the impeller, the wet stator drives the permanent magnet rotor to drive the impeller to rotate, and a fixing sleeve for fixing the permanent magnet rotor is arranged on the outer side of the impeller. And gaps are formed between the end parts of the two sides of the fixing sleeve and the water suction chamber and between the end parts of the two sides of the fixing sleeve and the water drum and are tooth-shaped. And through the arrangement of the tooth-shaped gaps, the path length of the gaps is prolonged, and a vertically staggered blocking structure is also formed, so that particulate matters in a water body can be prevented from entering the motor cavity.

The utility model relates to a disc type permanent magnet rotor magnetic steel assembly tool, a disc type permanent magnet rotor comprises magnetic steel and a supporting piece, the supporting piece comprises a rotating shaft, a supporting plate and a columnar fixing core which are coaxially arranged, and the tool comprises a swing rod, a first jacking piece and a second jacking piece; one end of the swing rod is rotatably fixed to the rotating shaft, the first jacking piece and the second jacking piece are adjustably fixed to the end, away from the rotating shaft, of the swing rod, the moving direction of the first jacking piece is parallel to the axial direction of the rotating shaft, and the moving direction of the second jacking piece is in the radial direction of the rotating shaft. Compared with the prior art, the device has the advantages of convenience in operation, high adaptability and the like.

The invention relates to the technical field of magnetic steel sheet separation for permanent magnet rotors, in particular to a magnetic steel separation device and method for a permanent magnet rotor, and the device comprises a supporting table, a limiting baffle, a movable baffle, and a pushing assembly. The limiting baffle is fixedly arranged on the supporting table, the movable baffle is movably arranged relative to the limiting baffle, a placement space is formed between the movable baffle and the limiting baffle, and through grooves are reserved between the bottoms of the movable baffle and the limiting baffle and the supporting table; the pushing assembly comprises a pushing plate and a driving assembly which is connected with the pushing plate and drives the pushing plate to push out the lowermost magnetic steel sheet; two clamping assemblies are symmetrically arranged on the side wall, facing the limiting baffle, of the movable baffle in the pushing direction. Each clamping assembly comprises an eccentric roller stretching across the stacked magnetic steel, a supporting frame and a driving motor. And a position sensor is arranged below the movable baffle. Through controllable clamping arrangement of the two eccentric rollers, the magnetic steel sheets are prevented from being abraded in the return stroke process of the push plate while automatic progressive feeding of the magnetic steel sheets is guaranteed.

A built-in tangential mixed magnetic steel magnetism gathering type permanent magnet rotor relates to the technical field of motors, the rotor comprises a rotor iron core and a rotating shaft, the rotor iron core is provided with a plurality of permanent magnet units which are symmetrically arranged around the axis of the rotor iron core, and the permanent magnet rotor is characterized in that each permanent magnet unit comprises a middle magnetic steel, middle air permanent magnet grooves and radial magnetic steel are arranged between the adjacent permanent magnet units, the middle air permanent magnet grooves and the radial magnetic steel are arranged on the q shaft, the middle air permanent magnet grooves are arranged on the inner sides of the radial magnetic steel, and the middle magnetic steel and the adjacent radial magnetic steel on the two sides of the middle magnetic steel are arranged in a U shape. The rotor provided by the utility model can reduce motor noise and torque ripple.

The application discloses a small generator and relates to the technical field of generators.The generator comprises a shell, double-end heat dissipation ventilation holes, a shieldable permanent magnet rotor and a temperature control and torque limiting protection assembly.A groove on the outer periphery of the rotor and an embedded paddle build through air flow when rotating, so that self-driven heat dissipation is realized.The temperature rise of a coil triggers a triode driven protection electromagnet through a thermistor, the torque transmission of a toothed disc friction coupling is adjusted, continuous derating is realized, and the generator can be stopped until zero coupling.The permanent magnet adjusting assembly is combined with an electromagnetic locking mechanism through an iron shell body-aluminum strip-permanent magnet combination, the magnetic field output is quickly cut off, and no induced voltage is generated during maintenance.

A permanent magnet rotor assembly for an electric motor, an electrified vehicle, and a method are provided. The assembly comprises an annular stack of rotor lamination layers (“rotor lamellae”) constructed from a magnetic core material. The rotor lamellae have internal axial surfaces that together define a group of first openings through the magnetic core material and a group of second openings through the magnetic core material. The annular stack comprises a first array of permanent magnets and a second array of permanent magnets.

The invention relates to the technical field of collaborative design of ultra-high-speed motors and fluid machinery, in particular to a structure-electromagnetic collaborative optimization device of a centrifugal hydrogen circulating pump driven by an ultra-high-speed permanent magnet motor, which comprises an ultra-high-speed permanent magnet motor module consisting of a stator iron core, a permanent magnet rotor, a high-frequency inverter and a non-contact bearing, the permanent magnet rotor is rigidly connected with the centrifugal impeller, and the rotating speed of the rotor ranges from 80000 r / min to 200000 r / min; the centrifugal hydrogen pump module comprises a pump body, a three-dimensional flow channel impeller, a hydrogen sealing assembly and an inlet and outlet pressure sensor, an impeller blade profile is designed based on pneumatic-electromagnetic coupling simulation optimization, collaborative optimization of structure-electromagnetic parameters is achieved, an independently designed matching blind area is eliminated through an integrated controller, and under the working condition of 150000 r / min, the matching blind area of the three-dimensional flow channel impeller is controlled to be matched with the matching blind area of the three-dimensional flow channel impeller. The comprehensive efficiency of the system is improved by 8%-12%, and the vibration noise is reduced by 15-20 dB; when the hydrogen flow suddenly changes (0.5 kg / h to 3 kg / h), the cooperative adjustment time of the rotating speed of the motor and the opening degree of the guide vane of the impeller is smaller than or equal to 0.3 s, and surge and overload are effectively avoided.

The invention discloses a sealed fermentation device for microbial fertilizer preparation, and relates to the technical field of fermentation devices.The sealed fermentation device comprises a fermentation box, a feeding port is fixed to the upper end of the fermentation box, a discharging valve port is fixed to the lower end of the fermentation box, an air cylinder is further fixed to the fermentation box, and a movable plate is fixed to the output end of the air cylinder; a motor is fixed to the lower end face of the movable plate, and an output shaft of the motor is in sliding connection with the fermentation box. According to the sealed fermentation device for preparing the microbial fertilizer, an air gap between a conductor rotor and a permanent magnet rotor is adjusted through an air cylinder, so that the rotating speed of a stirring plate can be changed, the stirring plate is driven to rotate by matching with transmission of a rack and a gear, and inclination angle adjustment of the stirring plate can be synchronously realized, so that low-viscosity materials can be stirred at high rotating speed and large inclination angle; the radial flow of the material is enhanced, the high-viscosity material is stirred at low rotating speed and small inclination angle, and the axial pushing is enhanced, so that the device is suitable for mixing the materials with different viscosities.

This method for manufacturing an interior permanent magnet rotor comprises an orienting and molding step for filling slots formed in a rotor core (12) with a composition for forming anisotropic bonded magnets, magnetically orienting a magnet material contained in the composition filling the slots by applying magnetic flux to the magnet material using an orienting unit (50), and molding the composition. The orienting unit comprises: a plurality of magnetic flux generating members (52) that generate magnetic flux; a plurality of intermediate members (54); and a plurality of support members (56) provided to each of the plurality of magnetic flux generating members. Each of the support members has an arm part (58) extending toward the radially inward side of the orienting unit along a lateral surface of the magnetic flux generating member. When the rotor core is accommodated inside the plurality of magnetic flux generating members, the tips of the arm parts support a thinnest part between the outer circumferential surface of the rotor core and the slots from the radially outward side of the orienting unit.

This utility model belongs to the technical field of vertical mills and discloses a vertical mill drive system. The vertical mill drive system includes a housing, a main shaft, a stator assembly, a permanent magnet rotor, a transmission assembly, a thrust bearing, and a high-pressure pipeline. The housing has a motor cavity and a mounting cavity. The housing is provided with a lubrication channel communicating with the mounting cavity. The main shaft passes through the motor cavity, and one end of the main shaft extends out of the mounting cavity and is used to connect with the grinding disc. The stator assembly is installed on the inner wall of the motor cavity. The permanent magnet rotor is located inside the stator assembly and is sleeved on the main shaft. The transmission assembly is installed in the motor cavity, and the power input end of the transmission assembly is connected to the permanent magnet rotor, and the power output end is connected to the main shaft. The thrust bearing is sleeved on the main shaft and abuts against the grinding disc. The high-pressure pipeline is installed in the mounting cavity and communicates with the lubrication channel. The high-pressure pipeline is used to spray lubricating oil toward the thrust bearing. This vertical mill drive system has a simple structure, low installation and debugging difficulty, and is very convenient for operation and maintenance.

The application discloses a tire inflation valve restraint structure of an easy-to-disassemble inner tube type wheel hub motor, which comprises a coaxial stator shaft, two end covers, a wheel rim, an inner tube, a permanent magnet rotor, a stator winding and an outer tube; the two end covers are locked on the two sides of the wheel rim, and the inner ring of the end cover is rotationally matched with the stator shaft; the outer tube is arranged on the outer ring of the wheel rim, and the inner tube is arranged in the outer tube; the outer ring of the end cover is integrally provided with a structure ring, a local part of the structure ring of one of the two end covers is provided with a tire inflation valve protruding gap, the wall body on the side close to the tire inflation valve protruding gap of the wheel rim is hollowed out to form a tire inflation valve through hole, the cylindrical tire inflation valve of the inner tube sequentially passes through the tire inflation valve through hole and the tire inflation valve protruding gap and is exposed outside, a tire inflation valve restraint device is arranged at the tire inflation valve protruding gap and tightly holds the cylindrical tire inflation valve; while effectively restraining the tire inflation valve, the easy-to-disassemble and easy-to-mount performance is realized.

The utility model discloses a combined permanent magnet self-inductance generator motor which is composed of a disc-type stator, a radial stator, a permanent magnet rotor, a power switch control system and a power generation switch control system. The disc type stator generates clockwise torque force on the permanent magnet rotor in the axial magnetic field direction, and the radial stator also generates clockwise torque force on the permanent magnet rotor in the radial magnetic field direction. And electric energy generated by the disc-type stator winding iron core, the radial stator winding iron core and the winding opposite to the permanent magnet rotor due to power-off self-inductance is guided to a battery or other electric equipment by closing the solid-state relay II. Therefore, compared with a single disc type or radial type permanent magnet self-inductance generator motor, the permanent magnet rotor has larger torque force, and the stator winding converts magnetic field energy into electric energy to be output, so that the permanent magnet energy is higher in utilization rate. If the device is installed on an electric automobile, the cruising ability of the electric automobile is greatly improved, and the battery consumption is reduced.

The utility model discloses a silent fan for a noninvasive ventilator, and aims to solve the problems that in the prior art, an air chamber and a motor assembly chamber are adjacent and can be independently detached, but the sealing effect of a connecting structure between the air chamber and the motor assembly chamber is poor, so that the air supply and silent effects of the fan are influenced; the technical problems that signal lines and power lines of a motor assembly chamber are scattered in wiring, connection lines are poor in protection, and later maintenance is inconvenient exist in the prior art are solved, and an air chamber internally provided with an impeller and the motor assembly chamber internally provided with a motor assembly are included; the motor assembly comprises a Hall PCB, a central shaft and a permanent magnet rotor. The Hall PCB comprises a Hall element plug-in and a weak induction magnet; the air chamber comprises an air chamber upper cover and an air chamber lower cover; the motor assembly chamber comprises a casing upper cover and a casing bottom cover; the casing upper cover comprises a connecting step and an elastic wire protecting sleeve; the air chamber lower cover abuts against the machine shell upper cover in a sealed mode through a double-ring sealing ring. The elastic wire protecting sleeve is provided with a convex wire penetrating hole; and the threading holes comprise a signal line routing hole and a power line routing hole.

The application discloses a permanent magnet flywheel energy storage phase modifier system and a control method thereof. The permanent magnet flywheel energy storage phase modifier system comprises a controller, a converter, a flywheel, a permanent magnet speed regulating motor, a phase modifier and a shaft system. The phase modifier and the permanent magnet speed regulating motor are mounted on a power grid. The controller is used for acquiring the flywheel rotating speed, the active power and the frequency of the power grid, formulating an active power control strategy and sending a control signal. The flywheel and the phase modifier rotor are connected with the permanent magnet rotor and the armature rotor of the permanent magnet speed regulating motor through the shaft system. The converter is connected with the armature winding of the permanent magnet speed regulating motor and changes the power frequency according to the control instruction of the controller. The converter adjusts the rotating speed of the permanent magnet synchronous motor and the flywheel by changing the power frequency, so as to change the flywheel energy storage state. The energy is fed through the phase modifier and the permanent magnet speed regulating motor. The application can actively control the distribution process of the flywheel energy charging and discharging and the active power sending, and improves the inertia support capacity of the phase modifier.

Different from a common three-phase alternating-current motor, a motor stator of the triangular connection three-phase alternating-current permanent-magnet brushless motor is formed by stacking silicon steel sheets with barrel-shaped interiors and armature slots and armature teeth for winding, and a three-phase winding on the stator adopts a triangular connection method. The cylindrical permanent magnet rotor is radially provided with the permanent magnets of which the magnetic lines are vertical to the rotating shaft of the motor, so that the motor can be directly used on a three-phase alternating-current power supply without a driver, and can also be subjected to speed regulation through an alternating-current frequency converter, and compared with a traditional three-phase alternating-current motor, the efficiency, power and torque of the motor are improved under the condition of the same specification; and all south and north magnetic poles of the magnetic rotor containing the permanent magnets are driven during driving each time, so that high electric energy driving efficiency and high power density are realized. Energy conservation and emission reduction are achieved in daily industrial power application, and the three-phase alternating current motor has the application prospect of replacing a three-phase alternating current motor which is widely used at present and is of great significance.

The invention relates to the technical field of magnetic force couplers, in particular to a magnetized permanent magnet magnetic force coupler which comprises a permanent magnet rotor, a magnetic conductive disc and a shaft sleeve, the magnetic force coupler achieves power transmission and adjustment through the action of current and a magnetic field, and in the process, a part of heat is generated due to cutting of magnetic induction lines. And if the heat cannot be dissipated in time, the internal temperature of the magnetic coupler is increased, so that the performance and the service life of the magnetic coupler are influenced. Excessive temperature may cause performance reduction of a permanent magnet, unstable magnetic field, reduction of lubricating oil adhesion capability of a rotating part of the magnetic coupler, lubrication failure and even failure.

The utility model relates to the field of sorting machine discloses an eccentric eddy current sorting machine, including base, the top fixedly connected with support plate A of base, the top fixedly connected with collecting box of base, the outer wall fixedly connected with baffle of support plate A, the top of support plate A is provided with transmission sorting mechanism, the top fixedly connected with the blanking box of support plate A, the outer wall fixedly connected with the blanking hopper of blanking box, the inside of blanking box is provided with screening guide mechanism. In the utility model, motor B drives transmission gear B to rotate, and then drives belt gear A, transmission rod, transmission gear A, makes screening cylinder rotate alone finally, realizes the preliminary screening to material, transmits small material to the center position of conveyer belt, strengthens small material and permanent magnet rotor's magnetic force contact, makes small material bounce higher, avoids the uneven condition of small material screening.

This utility model relates to the field of geological exploration equipment and power generation technology, and in particular to a non-contact rotary power and signal transmission device for rotary geological steering. The device includes a main body with connecting components fixedly connected to its side. By integrating the power generation mechanism coaxially with the geological steering sub, this utility model avoids the need for additional power generation devices installed outside the drill string or in other locations downhole. This simplifies the overall drilling system structure, reduces space constraints caused by additional components, facilitates operation in confined wellbore environments, does not disrupt the normal drilling process, and eliminates the need for large-scale modifications to existing drilling techniques and equipment. The device can seamlessly integrate with existing rotary geological steering systems, ensuring uninterrupted geological steering functionality. Precise control of the air gap between the stator coil and the permanent magnet rotor is required to ensure high magnetic coupling efficiency while avoiding excessive mechanical vibration and damage.

The utility model discloses a water cooling structure of a conductor rotor side permanent magnet speed regulator. The water cooling structure comprises a water distribution box, a shell, a conductor rotor, a water baffle, a permanent magnet rotor, a load shaft and a motor shaft. The load shaft is concentric with the shaft of the motor shaft and synchronously rotates along with the motor shaft; the conductor rotor and the permanent magnet rotor are concentrically sleeved and are separated by an air gap; the conductor rotor is concentrically arranged on the motor shaft; the conductor rotor is provided with a plurality of drain holes. The permanent magnet rotor is concentrically arranged on the load shaft; during working, cooling water flows into the shell from the water distribution box, passes through the gap between the conductor rotor and the water baffle, then passes through the water flowing hole of the conductor rotor and finally flows out, and the cooling effect is achieved aiming at heat generated by working rotation of the conductor rotor and the permanent magnet rotor. The device is simple in structure, convenient to transform, low in cost and suitable for popularization and application. The device is simple in structure, convenient to transform, low in cost and suitable for popularization and application.