87 results about "Motor insulation" patented technology

The invention relates to the technical field of motor measurement, in particular to a motor insulation diagnosis method and device based on multi-physical field data fusion, and the method comprises the steps: collecting a multi-dimensional physical quantity signal related to insulation degradation; extracting a plurality of characteristic parameters representing the insulation state according to the multi-dimensional physical quantity signal; and inputting the plurality of characteristic parameters into a pre-constructed insulation health assessment model to output an insulation health index, and performing motor safety early warning under the condition that the insulation health index is greater than a preset index, the insulation health assessment model is constructed based on a pre-established mapping relation between the multi-dimensional characteristic parameters and the insulation health state. Therefore, the problems that the real health state of motor insulation cannot be reflected in time and the potential insulation breakdown risk cannot be early warned due to inaccurate insulation degradation identification caused by single general feature acquisition and one-sided diagnosis mode in related technologies are solved.

The invention relates to the technical field of motor insulation state monitoring, and discloses a motor winding turn-to-turn discharge monitoring method and device based on Rogowski coils. The high-pass integrator is matched to carry out integral operation on coil output signals in a centralized mode to obtain high-frequency discharge current data, then fault characteristic quantity is constructed based on the data, the fault position of the motor cable is determined, an independent monitoring module does not need to be configured for each phase of cable, and the single high-pass integrator can complete centralized processing of multi-coil signals. Not only is the use amount of core monitoring parts greatly reduced to reduce the monitoring cost, but also the hardware layout is remarkably simplified to save the installation space, and meanwhile, the data processing nodes are reduced to reduce processor resource occupation, and the problems of high monitoring cost, large space and resource consumption and low monitoring efficiency in the prior art are effectively solved.

The application discloses a kind of generator stator winding partial discharge quantity's inversion method and system, belong to large-scale rotating electrical machine insulation state diagnostic technical field, method includes: obtaining or estimating the key distributed capacitance parameter in insulation structure multi-capacitance equivalent circuit model, mapping relationship database is established;Partial discharge detection is carried out to the generator stator winding of applied test voltage, and the characteristic information of discharge pulse is collected;Based on the key distributed capacitance parameter in mapping relationship database, pre-generated pulse waveform-defect capacitance calibration curve, the characteristic information of discharge pulse collected is executed nonlinear iterative inversion calculation;Quantitative evaluation, type identification and health diagnosis are carried out to the insulation defect of generator stator winding.The application introduces pulse waveform feature into partial discharge physical quantity inversion, improves the accuracy, quantitative level and defect identification ability of generator stator insulation state evaluation, provides technical support for generator life extension and condition maintenance.

The utility model belongs to the technical field of high-voltage motor insulation detection, and discloses a detection device, in the detection device, a wire harness is electrically connected with a detection element, a connector is used for being electrically connected with a to-be-detected element, so that the detection element is electrically connected with the to-be-detected element, the to-be-detected element can be detected through the detection element, and the connector is placed in a storage groove. The cover plate is arranged on the shell and can enter and exit from the containing groove through the opening, so that when the wire harness is too long, a part of the wire harness can be placed in the containing groove, the situation that too many wire harnesses are exposed and affect workers is avoided, and the cover plate can move relative to the shell to open or close the opening; the cover plate driving part is used for driving the cover plate to move, so that when the detection device is not used, the cover plate driving part drives the cover plate to close the opening so as to seal the storage groove, the wire harness and the connector are prevented from being directly exposed outside, the effect of protecting the wire harness and the connector can be achieved, in addition, the cover plate is driven by the cover plate driving part, manual operation is not needed, and use is convenient.

The utility model relates to calender technical field, concretely is a kind of new energy motor insulation material calender, including calender main body, the inside rotation of calender main body is connected with the array distribution conveying roller, conveying belt is sleeved on conveying roller, the upside of calender main body is respectively fixedly connected with four vertical recessed plate, the inside of four vertical recessed plate is slidably connected with T type slide, fixedly connected with U-shaped support between four T type slides, the inside rotation of U-shaped support is connected with calender roller;The upside of U-shaped support is fixedly connected with rack, the utility model drives rack and pinion mechanism by first servo motor, accurately controls the lifting of calender roller, so that it can be flexibly adjusted height according to different processing needs, it is applicable to different thickness new energy motor insulation material, then the guiding design of T type slide and vertical recessed plate ensures that calender roller moves smoothly, improves the stability and applicability of calendering process.

The utility model discloses a motor insulation resistance tester, and belongs to the technical field of insulation resistance testers. The tester mainly comprises a tester body, and the tester body is provided with a wiring port. The protection mechanism is installed on the tester body, the protection mechanism comprises an installation plate, the installation plate is installed on the tester body, and a cover plate is installed on the installation plate in a hinged mode; the mounting seat is mounted on the tester body, a spring is mounted on the mounting seat, a buckling block is mounted at one end of the spring and comprises a convex block, and concave holes are formed in the two sides of the fixing rod; the pulling and holding rod is mounted on the buckling block, and one end of the pulling and holding rod movably penetrates through the mounting seat. According to the motor insulation resistance tester, through arrangement of the mounting plate, the cover plate, the grip, the fixing rod, the concave hole, the mounting seat, the buckling block, the spring, the pulling rod and the handle, dustproof sealing is performed on the wiring port when the motor insulation resistance tester is not used, so that external dust, moisture, greasy dirt and the like are prevented from entering the wiring port.

The invention discloses a high-voltage motor stator winding partial discharge signal identification method and system, and relates to the technical field of high-voltage motor insulation state monitoring, and the method comprises the following steps: obtaining a partial discharge signal of a high-voltage motor stator winding; sequentially carrying out wavelet packet decomposition and feature extraction on the partial discharge signal to obtain a feature vector; inputting the feature vector into a pre-trained CS-RF model to obtain a final recognition result; the pre-trained CS-RF model is obtained through training by taking the minimum expected misclassification cost as a node splitting objective function, and the expected misclassification cost is obtained through calculation of a preset misclassification cost matrix. According to the invention, the problem of limited fault identification precision caused by misclassification equalization, insufficient feature extraction pertinence and unbalanced sample categories in the prior art can be solved.

This stator (10) comprises a stator core (24), an insulator (16) for insulating the stator core, and a coil winding section (18) that is wound around the stator core with the insulator interposed therebetween. A ventilation path (56) extending in the axial direction of the stator core is formed between the stator core and the coil winding section.

This application provides a zigzag-structure insulation detection device, system, and method for high-voltage motors, applied in the field of high-voltage motor insulation detection technology. The device includes a zigzag-shaped metal casing and a three-phase high-voltage current-limiting resistor sealed with silicone rubber at its upper end. Inside the casing are six high-voltage isolation relays, a DC high-voltage generation module, a sampling and processing unit, an intelligent processing unit, and an LCD display device. These are permanently connected to the three-phase windings of the motor via flexible wires and circular copper connectors. After determining that the motor meets the safe shutdown conditions, the system sequentially selects the insulation type to ground or between phases, controls the on / off combinations of the six relays to reconstruct the measurement circuit, injects DC voltage, and continuously acquires voltage signals. It calculates the first insulation resistance value, the second insulation resistance value, and the absorption ratio. All insulation objects are divided into ground-to-ground and phase-to-phase groups, and the average value and deviation are calculated for horizontal comparison and vertical comparison with historical data. An early warning sign is generated based on the differences.

The present invention relates to an insulation system (1) for insulating electrical machines, comprising A) at least one insulating paper (2) comprising a first protective layer (4) and an insulating layer (6), and B) at least one cover layer (10), wherein the cover layer (10) has a CTI value according to IEC 60112 of > 600 V and / or a PLC / PTI value according to UL 746 of zero. The invention further relates to the use of the insulation system (1) for insulating electrical machines and to insulation (100) obtained or obtainable from the insulation system (1). The invention also relates to a stator (200) of an electrical machine, wherein the stator core (202) has insulation (100) at the slots (214a, 214n). The invention further relates to a method for insulating an electrical machine.

The invention discloses a motor insulation paper automatic paper inserting control method and device, and relates to the technical field of motor manufacturing, and the motor insulation paper automatic paper inserting device comprises a stator positioning rotation module, a material pressing assembly, an insulation paper feeding and paper inserting module and a cutting module. The insulation paper feeding and inserting module comprises a heating forming device and a pushing mechanism with load detection. The method comprises the following steps of: finishing mechanical zero alignment and compression of a stator by using a positioning convex edge of a stator jig; heating the insulation paper and calculating a target paper feeding length; the air inflow is adjusted through the electric proportional valve, the pushing mechanism is driven to vertically push the insulation paper into the stator groove from bottom to top, and meanwhile the pushing resistance is recorded; the paper is cut off and reset after being inserted in place. According to the method, the paper feeding length is corrected through the thermal-mechanical coupling model, and the thrust closed-loop control is carried out, so that the problems of thermal deformation error and thrust buckling of the insulation paper are effectively solved, and the paper inserting precision and stability are remarkably improved.

The application discloses a universal motor insulation detection device, and relates to the technical field of motor insulation detection.The universal motor insulation detection device comprises a conveying device, a conveying belt is arranged in the conveying device, one rack is arranged on one side of the conveying device, a first electric sliding rail is slidably connected to the inner side wall of the top end of the rack, and a motor body is arranged on the conveying belt.The test probe can be flexibly adjusted in position and posture, so that a single detection device can automatically adapt to and accurately contact diversified wiring terminals of different types of motors, such as AC asynchronous motors, DC motors, synchronous motors and servo motors, thereby realizing efficient and automatic universal detection of the insulation performance of various types of motors, significantly improving equipment utilization and detection efficiency, and being especially suitable for multi-model sampling inspection in mass production and detection requirements of various types of repair motors after use failure, and effectively solving the problems of poor universality and inconvenient switching of existing automatic detection devices.

The application discloses a motor anti-corona material corona resistance performance test device, system and method, relates to the high-voltage motor insulation technical field, and the test device comprises a plate electrode assembly and a blade electrode, the plate electrode assembly is used for bearing a sample to be tested, and a grounding electrode is fixed to the lower surface of the plate electrode assembly; the bottom of the blade electrode has a straight line blade with a length of 50 mm+ / -0.1 mm, the main body curvature radius of the blade cross-section profile is 0.22 mm+ / -0.008 mm, the straight line blade is formed by the intersection of two inclined sides, the blade included angle is 53.14 DEG, and the corner at the length direction end has a roundness with a diameter of 3 mm+ / -0.2 mm; during the test, a uniform and spacing-adjustable discharge gap is formed between the surface of the straight line blade and the surface of the sample to be tested on the upper surface of the plate electrode assembly. The application solves the problems that the existing test device cannot simulate a real non-uniform electric field and is difficult to produce standardized corona erosion, and realizes efficient and repeatable quantitative evaluation of the corona resistance performance of the anti-corona material.

The invention relates to an epoxy resin composite material for offshore wind turbine equipment insulation and a preparation method thereof, and belongs to the technical field of offshore wind turbine equipment insulation materials. The preparation method of the epoxy resin composite material for offshore wind turbine equipment insulation comprises the following steps: performing plasma treatment on nano MgF2, dispersing the treated nano MgF2 in an activating solution to obtain a MgF2 dispersion liquid, and then adding an initiator and styrene for grafting reaction to obtain modified MgF2; and dissolving the modified MgF2 in a solvent to obtain a premixed solution, dispersing the modified epoxy matrix in the premixed solution, adding the curing agent and the accelerant, uniformly stirring, defoaming, curing, cooling and demolding to obtain the high-performance epoxy resin. The epoxy resin composite material for offshore wind turbine equipment insulation is excellent in hydrophobicity and insulativity, high in interface bonding strength and capable of adapting to the severe operation environment of offshore wind turbine wind power high humidity, high salt mist and strong vibration; the insulating material can be used for core insulating parts such as a new energy offshore wind turbine cabin high-voltage bus insulating support, a hub motor insulating bush and a submarine cable terminal insulating sealing element.

The present application relates to a kind of unmanned aerial vehicle micro motor temperature rise analysis and life prediction method, comprising: in the process of unmanned aerial vehicle flight, the real-time temperature of three parts of micro motor winding slot, permanent magnet pole face and bearing inner ring is collected, and load current, rotating speed and flight attitude parameter are recorded simultaneously;With the real-time temperature of three parts as the basis, the initial temperature rise data is dynamically corrected in combination with the heat dissipation difference corresponding to load current, rotating speed and flight attitude parameter, and the actual temperature rise rate of each part is obtained;Based on the actual temperature rise rate of each part, in combination with the rated resistance temperature corresponding to the insulation grade of micro motor, the life attenuation rate under current working condition is determined;The actual running time of micro motor is accumulated, and the consumed life is obtained by actual running time and life attenuation rate calculation, and the remaining life prediction value and life warning signal of micro motor are output.In the present application, the defect that the precision of current micro motor temperature rise analysis and life prediction is not enough is overcome.

The application provides a motor insulation protective film and a preparation method thereof, wherein the motor insulation protective film comprises a PET base layer, a first adhesive layer and a second adhesive layer arranged on the upper and lower surfaces of the PET base layer respectively, a first LCP material layer and a second LCP material layer arranged on the first adhesive layer and the second adhesive layer respectively, and the first LCP material layer and the second LCP material layer are combined on the PET base layer through the first adhesive layer and the second adhesive layer. The LCP material layer is combined on the surface of the PET base layer through the adhesive layer, the excellent physical and chemical properties of the LCP material layer are utilized, the heat resistance, corrosion resistance and electrical insulation of the PET base layer are further improved, and the adaptability of the PET base layer to complex working conditions is stronger, so that the PET base layer is more suitable for the motor field.

[Slot-cooled electrical machine assembly, which is designed as a stator or as a rotor of an electromechanical energy converter, comprising an E-machine body which has at least one recess along an axial direction for receiving at least one electrical conductor, so-called E-machine conductor, wherein this recess is referred to as the so-called E-machine slot, wherein at least one E-machine conductor is arranged in the E-machine slot, wherein the at least one E-machine conductor is surrounded by an E-machine insulator element, which is thus geometrically arranged between this E-machine conductor and this E-machine body, wherein the E-machine groove includes at least one axially extending recess projecting into the E-machine body, so-called E-machine cooling channel recess, exhibits and wherein the E-machine insulator element extends into this E-machine cooling channel recess and thus at least one cavity is formed in this axial direction between the at least one E-machine conductor and the E-machine insulator element, so-called E-machine cooling channel.]

The application relates to a motor insulation plate polishing device with adjustable polishing depth in the technical field of motor maintenance equipment, which comprises a machine box, a placing groove is formed in the middle of the top of the machine box, a waste discharge hole is formed in the middle of the placing groove, and a thrust insulation plate body is arranged in the placing groove; a positioning assembly is arranged on the placing groove and used for fixing the thrust insulation plate body; and a rotating mechanism is installed on the top of the machine box and used for driving the positioning assembly to rotate. The application can accurately adapt to half-split ring-shaped thrust insulation plates with different sizes, the clamp does not need to be frequently replaced, stubborn dirt and aging layers can be quickly removed, the surface of the insulation plate can be uniformly polished, compared with a traditional single polishing mode, the polishing time is shortened, the flatness of the surface of the insulation plate can be ensured, a double cleaning mode of side shovel scraping and air blowing and side polishing and chip suction is formed, the polishing area is always clean, and the erosion of waste chips on the inside of the device is reduced.

The invention discloses a shield motor end structure insulation detection method based on eddy current and circulating current mechanism difference, and belongs to the field of shield motor insulation detection. The invention aims to solve the problem that the insulation state between the end structural members of the shielded motor cannot be judged in time to influence the operation of the motor. Comprising the steps that a current detection coil is arranged on a circuit board, and the circuit board is arranged on the outer surface of a large-radius section and close to the junction of the large-radius section and a transition section; obtaining an induction signal of a current signal generated between the end structures by adopting a current detection coil, and processing the induction signal through a DSP chip to obtain an induction current density; the current signal comprises an eddy current signal and a circulating current signal; the induced current density is compared with a known induced current threshold value, and the current insulation state between the end structures is obtained; and if the induction current density is between 2 times and 3 times of the current density when only the eddy current loss exists, determining that the insulation damage occurs between the end structures. The method is used for insulation detection between motor end structures.

The invention discloses a core-shell fiber reinforced epoxy resin composite material and a preparation method thereof.The core-shell fiber reinforced epoxy resin composite material is UHMWPE fiber with the surface coated with a silicon dioxide nano layer, the surface is evenly coated with a SiO2 nano layer, the interface bonding performance of the fiber and an epoxy resin matrix is effectively improved, and the core-shell fiber reinforced epoxy resin composite material is prepared; the physical properties of the composite material can also be greatly improved, specifically, (1) the composite material has high insulativity, wherein the breakdown field strength is improved by 50% or above compared with that of an uncoated fiber composite material; (2) high heat conductivity: the out-of-plane heat conductivity coefficient reaches 1-2W / (m.K) and is improved by 3-7 times compared with the traditional epoxy resin; and (3) light weight and high strength. The method is simple in process, controllable in cost, free of complex equipment and suitable for large-scale production. The material can be widely applied to the fields with strict requirements on insulation and heat dissipation performance, such as high-voltage insulation devices, high-power electronic packaging and new energy motor insulation systems.

The invention relates to the technical field of compressors, in particular to a motor insulation support structure, a motor comprising the motor insulation support structure and a compressor comprising the motor. The motor insulation support structure comprises a support and a cover plate, the support is installed on the end face of a stator iron core of a motor, the cover plate is arranged at the end, away from the stator iron core, of the support, and the cover plate comprises a cover part in butt joint with the end, away from the stator iron core, of the support and a partition part arranged on the outer periphery of the cover part. And the baffle part is sleeved on the peripheral side of the bracket and shields an enameled wire which is wired on the peripheral side of the bracket. The insulation distance between the enamelled wire and the shell can be increased, the insulation strength between the enamelled wire and the shell is effectively improved, and the product reliability is improved while the development requirement that the yoke size of the motor stator iron core is reduced is met; and the enameled wire can be protected, so that contact damage to the enameled wire is not easy to generate in the assembling process.

The invention provides a high-thermal-conductivity epoxy resin composite insulating material for motor insulation and a preparation method thereof, and belongs to the technical field of epoxy resin composite materials. The composite material is prepared from the following raw materials in parts by mass: 10-20 parts of epoxy resin, 3-5 parts of a curing agent and 8-15 parts of inorganic particles, the inorganic particles comprise aluminum oxide, boron nitride and silicon dioxide with different particle sizes. According to the invention, through a multi-scale and multi-shape particle compounding strategy, an efficient heat-conducting network is constructed, the interface compatibility and dielectric property are optimized, the heat-conducting property is improved, the good insulating ability is kept, and the requirement of main insulation of a high-power generator on the comprehensive performance of the material is met.

The present application relates to the technical field of power generation motor, and discloses a power generation motor insulation state prediction method and system. The method collects three-phase stator current signals and operation mode identification signals of the power generation motor, and constructs an insulation degradation characteristic vector. The power generation mode and the motor mode are distinguished based on window average active power, and an operation mode variable and a mode change indicator are constructed. The basic coupling coefficient between the degradation characteristics is calculated, the coupling weight is adjusted by introducing a mode sensitivity function, an adaptive adjacency matrix driven by the operation mode is constructed, and the event-driven update of the graph structure is realized. Based on the adaptive graph structure, spatial feature extraction and time dimension fusion are carried out, and a normalized insulation health index is output for state evaluation and trend analysis. The method can weaken the influence of the difference between the two working conditions on the coupling relationship of the characteristics, improve the stability and reliability of the insulation degradation evaluation, and is suitable for online monitoring and early warning of the power generation motor of the pumped storage unit.

This invention discloses a direct heat pump system for electric vehicles and its thermal management method. In this invention, a compressor, an internal cooler, an outdoor heat exchanger, an evaporator, a battery cooler, a gas-liquid separator, a large-diameter throttle valve I, a large-diameter throttle valve II, an electromagnetic shut-off valve I, an electromagnetic shut-off valve II, a check valve I, a check valve II, an electronic expansion valve I, and an electronic expansion valve II constitute a refrigerant circuit. A battery cooler, a six-way valve, a low-temperature radiator, a three-way shut-off valve, a battery water pump, a motor water pump, a motor, and a battery constitute a coolant circuit. The refrigerant circuit enables air-source refrigeration and hybrid refrigeration, and also enables air-source heat pump, water-source heat pump, dual-source heat pump, and hot gas bypass heating modes. The coolant circuit enables low-temperature cooling of the motor, low-temperature cooling of the battery, forced cooling of the battery, battery temperature equalization, motor insulation, and motor waste heat heating of the battery.

The utility model discloses a motor insulation paper cutting device which comprises a base, two sets of vertical plates are arranged at the top of the base, a main conveying roller is rotationally connected between the two sets of vertical plates, an auxiliary conveying roller is arranged above the main conveying roller, the top of the auxiliary conveying roller is connected with a driving mechanism facilitating adjustment of the distance between the auxiliary conveying roller and the main conveying roller, and a cutting bin is arranged at the top of the base. According to the insulation paper cutting device, the main conveying roller and the auxiliary conveying roller convey insulation paper together, the distance between the auxiliary conveying roller and the main conveying roller is adjusted through the driving mechanism so as to adapt to conveying of insulation paper with different thicknesses, after the insulation paper is conveyed to the cutting bin, the cutting mechanism can cut the insulation paper, and cutting operation of the insulation paper is completed. By means of the structure, the insulation paper cutting device can be suitable for conveying insulation paper with different thicknesses, meanwhile, automatic cutting of the insulation paper is achieved, and production efficiency is improved.

This invention relates to the field of detection technology, specifically disclosing an online monitoring system for high-voltage motor insulation. This system addresses problems such as delayed monitoring response, weak anti-interference capabilities, and narrow test coverage in existing systems. The system includes a monitoring center, a monitoring management module, a monitoring mode switching module, a fault simulation module, a multi-source sensor acquisition module, a signal processing module, a data fusion and analysis module, an alarm and storage module, and a communication module. This invention achieves online simulation testing of sensor channel anomalies, high loads, and customized frequency band signals through fault simulation command injection. It achieves real-time acquisition and preprocessing of broadband signals through multi-source parallel accelerated processing. Data fusion and intelligent judgment improve early warning accuracy and system robustness. Mode switching and online calibration ensure low false alarm rates and reliability throughout the testing process.

The application discloses an insulating end plate of a motor for aerospace high-temperature environment and a preparation method thereof, and relates to the technical field of composite materials.The preparation method comprises the following steps: pretreating a quartz fiber cloth to obtain pretreated quartz fiber cloth; impregnating polysilazane resin into the pretreated quartz fiber cloth to prepare prepreg; drying the prepreg; stacking the dried prepreg and placing the stacked prepreg in a mold; adopting a stepwise temperature and pressure process to perform mold pressing to obtain an insulating end plate blank; and performing heat treatment on the insulating end plate blank in an inert atmosphere to obtain the insulating end plate of the motor for the aerospace high-temperature environment.The long-term working temperature of the motor insulating end plate can be stabilized to be above 300 DEG C, and the motor insulating end plate can maintain good mechanical strength and insulation reliability in a high-low temperature alternating environment, so that the major technical problem that insulation components of an aerospace motor are prone to softening, decomposition and failure in an extremely high-temperature environment is fundamentally solved.

The utility model discloses a motor insulation paper indentation preparation mechanism, and belongs to the technical field of insulation paper indentation preparation, the motor insulation paper indentation preparation mechanism comprises a device main body, arc-shaped plates in contact with fixing rings are slidably connected in two fixing grooves, and the bottoms of the arc-shaped plates are rotatably connected with a driving mechanism; the rear ends of the two arc-shaped plates are rotationally connected with arc-shaped plates, rotating mechanisms are connected between the arc-shaped plates, the rear ends of the arc-shaped plates are connected with reset mechanisms, and the bottoms of the two arc-shaped plates are fixedly connected with limiting mechanisms. According to the utility model, the labor-saving disassembly of the mold is realized through the driving mechanism, and the electric push rod and the connecting rod assembly are linked with the arc-shaped plate, so that the disassembly process can be completed without auxiliary tools; the rotating mechanism triggers the third plate to deflect through the check block, precise positioning and rapid locking during mold installation are achieved, and the assembling efficiency is greatly improved; the reset mechanism utilizes a double-torsion-spring structure to ensure rapid switching of equipment states.

The invention provides a high-temperature-resistant motor insulation system and a preparation method thereof, and relates to the technical field of motor insulation. The system comprises a composite insulation wire rod, a protection belt and a glass fiber sleeve, the composite wire rod comprises a conductor and a composite insulation structure outside the conductor, and the composite insulation structure permeates and is solidified in the composite insulation structure through overall dipping and high-temperature-resistant organic silicon paint; when the composite insulation wire rod is embedded into a motor iron core groove, a protection belt is cushioned at the edge of the groove opening; after embedding is completed, the whole motor stator is subjected to vacuum pressure impregnation or dripping impregnation, and an integral insulation structure is formed through high-temperature curing; a glass fiber sleeve is additionally arranged at the position, penetrating out of the iron core through hole, of the outgoing line. Through the combination of a composite wire rod structure and an overall impregnation process, the winding has extremely high mechanical strength and vibration resistance, and meanwhile, excellent corona resistance and dielectric strength are provided; an all-directional mechanical protection system is formed from the braid layer of the wire to the protective belt of the notch and then to the sleeve of the lead.