17results about How to "Increase full rate" patented technology

The invention relates to a cascade reservoir group water storage scheduling method under an extra-low water condition, which comprises the following steps of: judging whether a cascade reservoir group has a risk of insufficient storage according to incoming water prediction, a minimum water level constraint, a minimum output flow constraint and a water storage target of each reservoir at the end of a water storage period, and if so, starting the cascade reservoir group water storage scheduling under the extra-low water condition; taking the minimum weighted sum of the difference between the highest water level of the cascade reservoir group in the scheduling period and the water storage target as a first scheduling target, taking the maximum sum of the generating capacity and the energy storage value of the cascade reservoir group as a second scheduling target, and establishing a cascade reservoir group water storage scheduling model without setting the end water level of the scheduling period; and solving to obtain a scheduling scheme with the maximum water storage satisfaction degree of the cascade reservoir group. The method can be used for coordinating the water storage processes of all the reservoirs under the ultra-low water condition, the cascade reservoirs can complete the water storage task to the maximum extent, and the overall cascade power generation benefits are considered.

An electric motor includes a housing, a stator assembly, a rotor assembly, a fan blade, and a tail cover. The stator assembly includes an annular stator core and coil groups wound in the coil slots of the stator core. The stator core is composed of multiple independent "I"-shaped stator units assembled into a closed annular shape. The outer and inner transverse sides of each stator unit are arc-shaped, with the arc length of the outer transverse side being longer than that of the inner transverse side. A groove and a boss are respectively provided on both sides of the outer transverse side. In two adjacent stator units, the boss of one stator unit can fit into the groove of another stator unit. The coil groups are divided into multiple groups, the number of which corresponds to the number of stator units. Each group of coils is wound in the coil slots on both sides of the stator unit, forming a stator unit winding. All stator unit windings are sequentially assembled to form a closed-loop stator assembly, and then welded and fixed at the joint of two adjacent stator units. The coils of the coil groups are connected. This invention has a more rational structure and higher working efficiency.

The utility model discloses a multi-stage liquid inlet mechanism of an immersed type liquid hydrogen pump. The multi-stage liquid inlet mechanism comprises a pump body and a piston installed in the pump body in a sliding mode. The hydraulic pump is characterized by further comprising a liquid inlet mechanism arranged on the pump body and the piston, and the liquid inlet mechanism comprises a multi-stage liquid inlet cavity formed in the pump body, a partition plate arranged on the piston and located in the multi-stage liquid inlet cavity and a floating plate movably connected to the piston. Through the arrangement of the multi-stage liquid inlet mechanism, liquid hydrogen is subjected to multi-stage compression before entering the liquid hydrogen pump and being compressed by the piston, so that the pressure of the liquid hydrogen is improved, the supercooling temperature point of the liquid hydrogen is improved, the liquid hydrogen is far away from a gas phase saturation point, the cavitation phenomenon is reduced, the filling rate of liquid entering a piston cavity is improved, and the liquid inlet efficiency is improved; therefore, the compression efficiency is improved.

The present invention provides a short-pitch motor stator, including an iron core and a stator winding, wherein the iron core is provided with 48 stator slots, and insulating paper is arranged in the stator slots, and the insulating paper sequentially separates the stator slots into a first layer, a second layer, a third layer and a fourth layer from the outside to the inside in the radial direction of the iron core, and the stator winding has eight magnetic poles and is a six-phase winding, and each phase of the stator winding includes a first winding coil, a second winding coil, a third winding coil and a fourth winding coil respectively wound on the iron core. The stator winding of the present invention has a relatively compact structure, and helps to reduce the end height of the winding, thereby reducing the volume of the motor without changing the power. In addition, the use of a six-phase winding can expand the selection range of voltage and current, adapt to a variety of controllers, thereby optimizing the performance and cost of the motor system, and can improve the efficiency and torque density of the motor, and at the same time has the characteristics of strong fault tolerance and high reliability.

The utility model relates to a split type stator structure, comprising a stator iron core which comprises two symmetrical stator iron core base bodies; a coil wound on the stator core; and each insulating frame is arranged between the corresponding coil and the corresponding stator iron core base body and covers the whole inner surface of the stator iron core base body. The stator iron core of the split type stator structure is arranged to be two symmetrical stator iron core base bodies so as to form a folding structure, the winding slot fullness rate can be improved, the output power and the torque of the motor are further improved, and independent winding can be carried out on the single stator iron core base body after the stator iron core base body is opened so as to improve the winding efficiency. And each insulating frame covers the whole inner surface of the stator iron core base body, so that electric leakage and coil abrasion can be effectively prevented.

The utility model discloses a motor stator, including stator core and flat wire, be equipped with a plurality of stator slot in the stator core, the flat wire is in the stator slot inner layer and is arranged, the cross section of flat wire is trapezoidal, the same layer includes two combined flat wire in the stator slot, the shape and size of flat wire in the stator slot are same. In the utility model, by setting the cross section of flat wire as trapezoidal, make the arrangement mode of flat wire in the stator slot more flexible and various, can adapt to different shape stator slot, and promote the slot full rate, reduce the skin effect influence.

The present invention provides a full-pitch motor stator, comprising an iron core and a stator winding wound on the iron core. Since the winding coils wound in the same stator slot belong to the same phase, and in the same stator slot, the fourth layer and the second layer are wound by the first winding coil, and the first layer and the third layer are wound by the second winding coil, two neutral point connecting lines in the same phase are connected in parallel, the structure is relatively compact, and it is helpful to reduce the end height of the winding, thereby reducing the volume of the motor without changing the power, and achieving high power and relatively small volume. In addition, the use of six-phase windings can expand the selection range of voltage and current, adapt to a variety of controllers, thereby optimizing the performance and cost of the motor system, and can improve the efficiency and torque density of the motor, while having the characteristics of strong fault tolerance and high reliability.

The utility model relates to the field of pump motors, and discloses a pump motor with a stator axial positioning function, which comprises a pump shell, a water outlet section is fixedly connected inside the pump shell, a motor shell is fixedly connected to the outer peripheral surface of a rear fixing abutting ring of the water outlet section, and the outer end surface of the rear fixing abutting ring is connected with a stator fixing frame in an abutting mode. The end, away from the rear fixing abutting ring, of the stator fixing frame abuts against a front fixing abutting ring, the end, away from the stator fixing frame, of the front fixing abutting ring is fixedly connected with a fixing assembly, and the inner wall of the stator fixing frame is fixedly connected with a supporting block. According to the utility model, the front fixed abutting ring and the rear fixed abutting ring are arranged, extrusion is carried out through the fixing assembly, the radial direction of the stator fixing frame is limited and fixed, and the radial movement between the stator and the stator fixing frame is limited through the positioning blocks and the positioning grooves, so that the stator is prevented from radial jumping after being used for a long time, and the service life of the stator is prolonged. And vibration and noise of the motor are reduced.

The invention relates to a motor stator core structure and a winding notch processing method thereof, the stator core structure is matched with a winding to form a stator assembly, the stator core structure comprises an iron core winding notch, the iron core winding notch is provided with a chamfering structure at the contact part of two end parts of the iron core winding notch along the height direction of a stator core and the winding, and the chamfering structure is arranged on the winding. The chamfer structure is a bevel angle or fillet structure used for protecting insulation of the enameled wire in the winding process. Compared with the prior art, the winding structure has the advantages that the winding can be directly performed on the stator core under the condition of not adding extra parts such as an insulating framework, the cost is reduced, the winding slot fullness rate and the motor performance are improved, and the like.

The utility model relates to the technical field of copper foil welding, in particular to a motor copper foil outgoing line structure. The motor copper foil leading-out wire structure provided by the utility model is formed by welding a copper foil winding leading-out wire, a gap of the leading-out wire and a copper foil lap joint area are uniformly filled with welding flux, the sectional area of the welding position is larger than 150% of the sectional area of the copper foil, and the welding length of the leading-out wire in the axial direction is 70%-100% of the width of the copper foil. The length of a copper foil lap joint area is 30%-70% of the total width of the leading-out wire in the radial direction, the number of winding turns of the copper foil completely winding the leading-out wire is 1-3, the contact area of the copper foil and the leading-out wire is large, a winding assembly is compact in structure, the lap joint range is large, the welding spot strength after welding forming is high, no welding seam exists on the outer side of the copper foil, the structural appearance flatness is high, and the problems of burn-through, deformation and the like do not exist. And copper foil winding is facilitated, and the slot fullness rate of the motor is effectively improved.

This invention discloses a process and design method for independently forming the end windings of a motor slot winding. This application further improves upon prior applications and existing motors, disclosing a series of configuration schemes based on the independent forming of the slot windings and end windings. Key features include: all three-stage end windings are formed by bending thin copper strips, allowing for interleaving to achieve cross-slot wiring of different phases, further optimizing motor performance; they also possess the advantage of being effective windings with equivalent function to the slot windings in participating in excitation, and the end windings have better heat dissipation and thermal conductivity, and there is no crossover issue between windings of different phases, greatly improving the winding withstand voltage safety and simplifying the winding forming process.

The utility model discloses a rotary transformer framework which comprises an upper framework and a lower framework, the upper framework comprises a first annular main body and a PIN needle connecting part arranged on the periphery of the first annular main body in a protruding mode, and a plurality of first butt joint pins are arranged on the first annular main body in the circumferential direction; the plurality of first butt joint pins extend along a first direction parallel to the axial direction of the first annular main body; the lower framework comprises a second annular main body, a plurality of second butt joint pins are arranged on the second annular main body in the circumferential direction, and the second butt joint pins extend in the second direction parallel to the axial direction of the second annular main body; the end portions of the first butt joint pins and the end portions of the second butt joint pins are in complementary slope shapes, so that the upper framework and the lower framework can be in butt joint in the mode that the end portions of the first butt joint pins are in butt joint with the end portions of the second butt joint pins in a matched mode.

This utility model discloses a rotor coil winding frame for a brushless generator, including a rotor shaft, a modular assembly frame, rotor windings, and end caps. The rotor shaft has axially spaced mounting slots along its axial direction. One end of the modular assembly frame has an arc-shaped outer protective cover extending from its sidewall, with an axial locking pin at the end of the outer protective cover. The other end of the modular assembly frame has a guide sliding part that inserts into the axial mounting slots. The rotor windings are fitted onto the modular assembly frame. The rotor shaft passes through the center of the end cap, which has multiple locking holes. The axial locking pins and locking holes cooperate to fix the windings. This utility model provides a rotor coil winding frame for a brushless generator, which facilitates winding, provides high rigidity radial constraint, and supports partial replacement and repair.

The utility model discloses a stator core, a motor stator, a motor and an electronic oil pump, the surface of the stator core is provided with a coating protective layer, and the coating protective layer is arranged at the contact surface of the stator core and an enameled wire so as to form an insulation partition between the stator core and the enameled wire. According to the utility model, the surface of the stator core is coated with the protective layer as the insulating layer, and the insulating layer is used for directly isolating the stator core from the enameled wire, so that an upper wire frame and a lower wire frame can be omitted, the winding operation is simplified, the number of parts is reduced, the assembly difficulty is reduced, the cost is reduced, and the slot fullness rate of the stator is improved.

This utility model discloses a modular stator structure, characterized by comprising several stator core blocks arranged in an I-shape, each composed of a yoke and stator teeth, forming an integral stator core. Stator slots are formed between adjacent stator core blocks, and the stator teeth are T-shaped, with slot openings communicating with the slots between adjacent teeth. The structure also includes a filler for changing the number of stator slots without altering the stator core diameter. This utility model utilizes several stator core blocks assembled into an integral stator core, with each block composed of a yoke and stator teeth. The entire stator core is modularly assembled, which effectively improves utilization, saves silicon steel material, and reduces costs when pressing silicon steel sheets using a press.

This utility model belongs to the field of motor technology, specifically relating to a segmented stator. This utility model utilizes grain-oriented silicon steel to create a segmented stator, comprising multiple U-shaped iron cores evenly arranged circumferentially. Each U-shaped iron core includes multiple U-shaped iron sheets stacked radially. The edges of the teeth of the U-shaped iron cores are flush, and gaps are left between the teeth of adjacent U-shaped iron cores, which are fixedly connected by insulating clips. The yokes of all U-shaped iron cores abut against the stator housing. Each U-shaped iron core is equipped with a winding coil, and the gaps between adjacent U-shaped iron cores, insulating clips, and the stator housing are filled with potting compound. This utility model maximizes the advantages of grain-oriented silicon steel while optimizing the motor structure and manufacturability, comprehensively improving the overall performance of the motor, further highlighting the potential application value of grain-oriented silicon steel as a substitute for non-grained silicon steel, and promoting the development of motor technology towards high efficiency and high power density.

The utility model relates to the technical field of motor stators, in particular to a full-circle type stator structure, which comprises a stator body, the stator body comprises two stator iron cores which are arranged in a mutually matched manner, each stator iron core comprises a first punching sheet group and a plurality of second punching sheet groups, and the plurality of second punching sheet groups are laminated on the first punching sheet group at equal angles. The first punching sheet group comprises a plurality of laminated first stator punching sheets, each first stator punching sheet comprises an annular yoke part and a plurality of tooth parts, the plurality of tooth parts are distributed on the inner side of the annular yoke part at equal angles along the circumference, the number of the tooth parts is the same as that of the second punching sheet groups, and the plurality of second punching sheet groups are laminated on the plurality of tooth parts one by one; the first punching sheet group comprises a plurality of tooth portions, a first matching piece located on the inner side wall of the annular yoke portion is arranged between every two adjacent tooth portions, the second punching sheet group comprises a plurality of second stator punching sheets, second matching pieces are arranged on the second stator punching sheets, the two stator iron cores are matched and connected through the first matching pieces and the second matching pieces, and the slot filling rate is increased.