10 results about "Squirrel-cage rotor" patented technology

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 utility model relates to the technical field of squirrel-cage rotors, and discloses a high-torque double-squirrel-cage rotor structure, which comprises a rotating shaft and a rotor iron core arranged on the rotating shaft, a lower cage assembly is arranged on the rotor iron core, and an upper cage assembly is arranged on the outer side of the lower cage assembly; the lower cage assembly comprises two lower end rings and a plurality of lower cage conducting bars mounted on the rotor core, the plurality of lower cage conducting bars are located between the two lower end rings, and the end parts of the lower cage conducting bars are connected with the surfaces of the lower end rings; the upper cage assembly comprises two upper end rings and a plurality of upper cage conducting bars installed on the rotor core, the plurality of upper cage conducting bars are located between the two upper end rings, and the end portions of the upper cage conducting bars are connected with the surfaces of the upper end rings. According to the high-torque double-squirrel-cage rotor structure, the lower cage assembly and the upper cage assembly are arranged, and the conductivity of the lower cage assembly and the conductivity of the upper cage assembly are combined, so that the loss and heating of the motor are reduced, and meanwhile, a torque curve is stable and accords with actual working conditions.

The invention discloses a self-starting squirrel cage rotor structure and a permanent magnet synchronous motor, and belongs to the technical field of permanent magnet synchronous motors. The self-starting squirrel cage rotor structure comprises a rotating shaft, a rotor core, a squirrel cage unit and a plurality of magnetic pole units, the rotor iron core sleeves the rotating shaft; each mouse cage unit comprises a plurality of spaced outer cage bars and a plurality of spaced inner cage bars; the plurality of magnetic pole units are uniformly arranged along the circumferential direction of the rotating shaft and are located at the inner sides of the plurality of outer cage bars, each magnetic pole unit comprises two circumferential magnetic steels and two radial magnetic steels, and the two circumferential magnetic steels and the two radial magnetic steels are respectively inserted into magnetic steel grooves of the rotor iron core and are arranged in a U shape; and the plurality of inner cage bars of each inner cage bar group are positioned in the openings of the corresponding magnetic pole units. The self-starting squirrel cage rotor structure provided by the embodiment of the invention not only improves the rated efficiency of the motor, but also realizes synchronous lifting of the starting torque and the pull-in torque in combination with the double-cage design, reduces the starting current, and improves the starting performance.

In the process according to the invention, an aluminum alloy is prepared with the following composition, in wt%: Si: 0.4 – 1.4, Fe: up to 0.5, Cu: up to 0.8, Mg: 0.2 – 0.9, Mn: 0.08 – 0.8 and / or Cr: 0.06 – 0.5, Zn: up to 0.5, Ti: up to 0.05, V: up to 0.05, other elements or impurities < 0.05 each and < 0.15 total, the remainder being aluminum. This alloy is then cast, homogenized, hot-rolled, and optionally cold-rolled and heat-treated, with the final sheet thickness being from 0.5 mm to 10 mm. The processing conditions are determined to obtain an IACS conductivity of at least 47% and to achieve, in the transverse-longitudinal direction, a yield strength of Rp0,2 of at least 35 MPa and an elongation A % of at least 25%, i.e. an elastic limit Rp0,2 of at least 145 MPa and an elongation A % of at least 5%.The products obtained by the process according to the invention are particularly advantageous for applications requiring good electrical or thermal conductivity such as heat sinks, battery cooling channels, stamped cooling panels, conductive bars, flat screen cooling plates, refrigerated plates, squirrel cage rotors, roof coils.

The invention discloses a contraction ring material for a rail transit traction motor and a preparation method of the contraction ring material, and belongs to the technical field of contraction rings for rail transit traction motors. The preparation method comprises the steps that raw materials are subjected to vacuum induction melting treatment and electroslag remelting treatment to obtain electroslag ingots, and the electroslag ingots are X5NiCrTi26-15 alloy; the electroslag ingot is subjected to forging blank manufacturing treatment and numerical control ring rolling treatment, and a shrinkage ring blank is obtained; and the shrinkage ring blank is subjected to solid solution heat treatment, aging heat treatment and turning, and the shrinkage ring is obtained. The X5NiCrTi26-15 contraction ring has more excellent normal-temperature and high-temperature mechanical properties, can resist centrifugal load and local high-temperature erosion during high-speed operation of a motor, directly supports the requirements of high reliability and long service life of the contraction ring, keeps nonmagnetism, can avoid interference to a magnetic field of the motor, guarantees the energy conversion efficiency, reduces the energy consumption, and improves the service life of the motor. And the strict requirements of modern high-speed and high-power squirrel cage rotor motors on the shrinkage ring are comprehensively met.

The utility model provides a low heat consumption three-phase squirrel cage asynchronous motor used for an ultra-large air volume wind pressure fan, and relates to the technical field of three-phase squirrel cage asynchronous motors, the low heat consumption three-phase squirrel cage asynchronous motor comprises a housing, a low consumption mechanism and a mounting mechanism, the low consumption mechanism comprises a rotating seat and a swing plate, the swing plate is connected to the surface of the rotating seat in a surrounding manner, and the mounting mechanism is arranged on the housing. The rotating seat and the swing plate are used for improving the heat dissipation effect of the motor, and the purpose of low heat of the motor is achieved. The mounting mechanism comprises an adjusting plate and a fixing cover, the upper surface of the fixing cover is fixedly connected with the lower surface of the adjusting plate, and the adjusting plate and the fixing cover are used for limiting bolts used at the mounting position of the motor. According to the utility model, the rotation of the squirrel-cage rotor can drive the heat dissipation fan and the rotating seat to rotate together, so that the heat dissipation efficiency of the motor is improved, and meanwhile, the fixing cover can be used for limiting and fixing bolts used for mounting the motor base, so that the bolts can be prevented from loosening when the motor is used.

The application discloses a squirrel cage rotor core and a rotor, and belongs to the rotor field.The squirrel cage rotor core comprises a middle conventional stack section and two end-shaped stack sections arranged along an axial direction, the conventional stack section is composed of a plurality of first punching sheets stacked along the axial direction, and the end-shaped stack section is composed of a plurality of second punching sheets stacked along the axial direction; the first punching sheet and the second punching sheet are provided with conductor grooves distributed along a circumferential direction, and an axially matched blocking buckle structure is arranged between two adjacent conductor grooves on the same second punching sheet; the conventional stack section and the end-shaped stack section are arranged in a partitioned mode, the second punching sheet with the blocking buckle structure is arranged only at the end of the iron core prone to aluminum penetration, the circumferential passage of the conductor groove is blocked by the mutually embedded blocking buckles, the penetration of aluminum liquid into the gap between the punching sheets is effectively blocked during aluminum casting, the short-circuit problem between the punching sheets is eliminated, the rotor leakage reactance parameter is stabilized, and the electromagnetic performance and the operation efficiency of the motor are ensured. The structure is highly targeted, the whole iron core does not need to be reformed, and the use effect and the economy are considered.

The invention relates to a squirrel-cage rotor (7) for driving an asynchronous machine (3) of a rail vehicle (1). The rotor comprises a rotor shaft (11) rotatable about a rotor axis (12), a rotor laminated core (14) connected to the rotor shaft (11) in a rotationally fixed manner and having a plurality of axially extending rotor slots (15), and a shorting cage (17) having shorting bars (18) arranged in the rotor slots (15). According to the invention, the strip cross-section (Q) of the short-circuit strip (18) has a rectangular outer region (QA) and a trapezoidal inner region (QI) connected thereto. Wherein the inner region (QI) is radially closer to the rotor axis (12) than the outer region (QA) and tapers in a radial direction towards the rotor axis (12). As a result, the squirrel-cage rotor (7) is optimized in terms of its electromagnetic properties and in terms of its mechanical strength properties.

The invention discloses an alternating current motor with an iron core mixed with an insulating thermomagnetic alloy sheet and a generator. A stator iron core of the rare earth permanent magnet synchronous axial magnetic flux motor is formed by alternately overlapping a circle of insulation multi-orientation silicon steel sheets and a circle of insulation thermomagnetic alloy sheets. A stator iron core of the rare earth permanent magnet radioactive ray direction magnetic flux motor is formed by alternately overlapping a layer of insulation multi-orientation silicon steel sheet and a layer of insulation thermomagnetic alloy sheet. A stator core of the squirrel-cage rotor motor is formed by alternately overlapping three layers of insulation multi-orientation silicon steel sheets and one layer of insulation thermomagnetic alloy sheets. A stator iron core and a rotor iron core of the wound rotor motor are formed by alternately overlapping three layers of insulation multi-orientation silicon steel sheets and one layer of insulation thermomagnetic alloy sheets. A stator iron core of the generator is formed by alternately overlapping three layers of insulation multi-orientation silicon steel sheets and one layer of insulation thermomagnetic alloy sheets. Under the load of 50%, the insulating thermomagnetic alloy sheet is a non-magnetic material. Under 100% load, the insulating thermomagnetic alloy sheet is changed into a magnetic substance, and heat energy is converted into magnetic energy.

The utility model discloses a squirrel cage rotor winding and rotor belong to motor field, including two end rings and a plurality of guide bars, and the both ends of each guide bar are fixedly connected with the two end rings respectively, a plurality of guide bars are parallel to each other, and the gap is formed between the two adjacent guide bars, characterized by: the squirrel cage rotor winding further includes reinforcing ribs, the number of reinforcing ribs is multiple, and the end of each reinforcing rib is connected with the end of guide bar and the end face of end ring, and the upper and lower ends of each guide bar are all equipped with reinforcing ribs, through setting reinforcing rib, increase the connecting strength of guide bar and end ring, make guide bar and end ring not easy to deform, and the connecting part resistance of guide bar and end ring is reduced by reinforcing rib, avoids the short circuit caused by guide bar melting.