10 results about "Rotor cage" patented technology

The invention relates to a rotor (10) for an electric motor (2) comprising a rotor cage (11) with at least two short-circuit rings (12) and several rotor bars (13) connecting the short-circuit rings (12), and a rotor body (20) which is at least partially arranged within the rotor cage (11), wherein the rotor body (20) has a radial region (21) in which the rotor bars (13) extend, the radial region (21) having at least two annular sections (22), each associated with one of the short-circuit rings (12), and a central section (23) extending between the annular sections (22). The invention further relates to an electric motor (2) and a vehicle (1).

The application discloses a commutator and rotor holder automatic assembling equipment and method for a hollow cup motor rotor, which comprises a mounting seat, a motor, a cylinder, an adapter block, a first bearing, a sliding sleeve, a clamping jaw and a clamping jaw mounting rack, the adapter block is mounted on the output shaft of the cylinder, and the output shaft of the motor is connected with a vertically arranged rotating shaft; the sliding sleeve is mounted on the adapter block through the first bearing, and the sliding sleeve is movably sleeved on the rotating shaft; the clamping jaw mounting rack is fixedly penetrated on the rotating shaft; the clamping jaw comprises a pair of clamping fingers, each clamping finger is hingedly connected to the clamping jaw mounting rack through a horizontal hinge shaft, the sliding sleeve is respectively provided with a notch groove at a position corresponding to each clamping finger, and the upper end of each clamping finger is clamped into the notch groove. The application can clamp the commutator through the clamping jaw, then the rotating shaft drives the clamping jaw to rotate to align the commutator with the rotor holder, the subsequent pressing tool on the production line is facilitated to press the commutator into the rotor holder, and automatic assembly is realized.

The application relates to the technical field of electric transmission and control, and discloses a bearing-free composite rotor cage asynchronous motor multi-frequency harmonic vibration compensation control method and system. The bearing-free composite rotor cage asynchronous motor multi-frequency harmonic vibration compensation control method comprises the following steps: collecting a bearing-free composite rotor cage asynchronous motor rotor radial displacement signal; constructing an input vector containing a direct current item and multi-order cosine and sine components; using an adaptive linear neuron algorithm to decompose the signal and extract direct current, a fundamental wave and each order harmonic component; using an extended linear active disturbance rejection controller to observe total disturbance containing low-frequency slow change and harmonic disturbance; calculating compensation force according to the harmonic component; superimposing the compensation force and basic suspension force to form a total control force instruction; driving a suspension winding through force-current conversion; and inhibiting multi-frequency harmonic vibration. The application effectively improves harmonic separation precision and disturbance suppression capacity, and provides a reliable theoretical guarantee for high-speed bearing-free motor control.

The application relates to the technical field of motor control and discloses a bearing-free composite rotor cage-type asynchronous motor vibration real-time compensation control method, which comprises the following steps: collecting a rotor displacement signal and pre-processing the same to obtain a filtered displacement signal; processing the filtered displacement signal based on a second-order generalized integrator to extract a fundamental harmonic component synchronized with a rotor mechanical angular velocity; dynamically optimizing the amplitude weight and the phase weight of a compensation force by adopting a simplified LMS algorithm, and generating a feedforward compensation force according to the optimized weight; constructing a double-channel control framework to synthesize a total control force; and generating corresponding radial suspension forces by driving a suspension force winding through an inverter, so that the unbalanced vibration of the rotor is counteracted; the second-order generalized integrator harmonic observer is adopted to realize high-precision extraction of the fundamental frequency component, and a frequency self-adaptive adjustment mechanism is matched, so that the rotor mechanical angular velocity change can be tracked in real time.

Electric motor (50) with an electromagnetically actuated brake, wherein the electric motor (50) comprises a housing, a rotor (1) and a stator (16), wherein the rotor (1) comprises a shaft, a rotor lamination stack and a rotor casting designed as a rotor cage, wherein the shaft (66) is supported in the housing by a fixed bearing (11) and a floating bearing (44), wherein the floating bearing (44) is arranged to be axially movable and the shaft (66) has shaft sections with different diameters, whereby the transitions of the shaft sections form shaft diameter steps, wherein a spring element is arranged axially between the floating bearing (44) and a housing part, namely a bearing shield (42), wherein at least one ring of the floating bearing (44) is pressed against a shaft diameter step by the spring element, wherein the spring element is designed as a disc spring.wherein the brake (550) comprises a magnetic body and a coil mounted in the magnetic body, and a brake control line is provided for controlling the coil, and the brake control line is detachably connected to a coil connection in the magnetic body by means of a brake connector, wherein the brake connector and the coil connection are designed as electrical plug connections, wherein the brake connector has a connector part and the coil connection has a corresponding mating connector part, wherein the connector part is electrically connected by means of the brake control line to a connection option in the terminal box (110) in order to electrically connect the brake control line to an external control electronics or to control electronics located in the terminal box (110), and the mating connector part is electrically connected to the coil.wherein the brake connection line is guided through an eyelet of a bearing shield (42) of the electric motor (50), wherein the brake connection line is strain-relieved by means of a screw connection in the eyelet, wherein the brake (550) comprises a brake pad (169) arranged in a lining area and a tubular brake housing part, wherein the tubular brake housing part has a smaller inner diameter than an outer diameter of the magnet body and the tubular brake housing part is made of an elastic material such that it can be slipped over the magnet body and the tubular brake housing part surrounds the lining area in a housing-forming manner, wherein the tubular brake housing part is made of an elastic material, namely rubber or silicone, which conducts heat less effectively than metal or stainless steel, wherein the brake (550) has a brake pad (169) connected to a shaft (66) of the electric motor (50) in a rotationally fixed manner.The brake pad carrier (168) comprising the brake pad (169) and an armature disk (149) which is fixed against rotation relative to a housing of the electric motor (50), wherein the armature disk (149) and the brake pad carrier (168) are arranged to be axially movable in the pad area, wherein the brake pad carrier (168) comprises two metal disks, namely made of aluminum, which are connected to each other by a damping material and the brake pad (169) is arranged on the metal disks.

The invention relates to an asynchronous motor rotor squirrel cage fault diagnosis method and system fused with an electrical mechanism model and a medium, and the method comprises the steps: collecting the three-phase stator voltage, the three-phase stator current and the operation rotating speed of a to-be-monitored asynchronous motor, carrying out the preprocessing of the three-phase stator voltage, the three-phase stator current and the operation rotating speed, establishing a vibration fault characteristic frequency set; calculating vibration fault characteristic predicted values corresponding to all frequency points in the vibration fault characteristic frequency set by adopting a preset strategy, wherein the vibration fault characteristic predicted values comprise vibration displacement predicted values of the measuring points at the frequency points in the characteristic frequency set and vibration base values generated by the main magnetic flux of the motor; and calculating a prediction waveform coefficient of the squirrel cage fault according to the vibration displacement prediction value and the vibration base value, constructing a fault feature vector, comparing the fault feature vector with a preset fault region, and determining whether the motor has a fault according to a comparison result. According to the invention, the accuracy and robustness of motor fault diagnosis are improved.

The invention relates to the technical field of electrical transmission and control, and discloses a multi-frequency harmonic vibration compensation control method for a bearingless composite rotor cage type asynchronous motor, and the multi-frequency harmonic vibration compensation control method for the bearingless composite rotor cage type asynchronous motor comprises the steps: collecting a rotor radial displacement signal of the bearingless composite rotor cage type asynchronous motor; constructing an input vector containing a direct current item and multi-order cosine and sine components, decomposing a signal by using an adaptive linear neuron algorithm, and extracting direct current, fundamental waves and harmonic components of each order; total disturbance containing low-frequency slow change and harmonic disturbance is observed through an extended linear active disturbance rejection controller, compensation force is calculated according to harmonic components, the compensation force and basic suspension force are superposed to form a total control force instruction, a suspension winding is driven through force-current conversion, and multi-frequency harmonic vibration is restrained; according to the method, the harmonic separation precision and the disturbance suppression capability are effectively improved, and a reliable theoretical guarantee is provided for high-speed bearingless motor control.

A rotor cage (12, figure 1) suitable for an induction motor (180, figure 7), the cage comprising two end rings 18 connected by bars 20 and a rotor core (16, figure 1) comprising a stack of laminations

An extruder-mixer has a stator and a rotor which is arranged coaxially with respect to the stator. The rotor is rotatably supported with respect to the stator. The stator is at least partially arranged inside a volume defined by the rotor. The rotor has a rotor cage having a large number of apertures. The apertures are configured to be elongate in a longitudinal direction and the longitudinal direction thereof extends in each case in a skewed manner with respect to a rotation axis of the rotor.

The application relates to an asynchronous motor rotor cage fault diagnosis method and system based on a fusion electrical mechanism model, and a medium, the method comprising: collecting three-phase stator voltage, three-phase stator current and running speed of an asynchronous motor to be monitored; preprocessing the three-phase stator voltage, three-phase stator current and running speed; and establishing a vibration fault characteristic frequency set; using a preset strategy to calculate vibration fault characteristic prediction values corresponding to all frequency points in the vibration fault characteristic frequency set, wherein the vibration fault characteristic prediction values comprise vibration displacement prediction values of a measuring point at each frequency point in the characteristic frequency set, and a vibration base value generated by motor main magnetic flux; calculating a predicted waveform coefficient of the cage fault according to the vibration displacement prediction values and the vibration base value; constructing a fault characteristic vector; comparing the fault characteristic vector with a preset fault region; and determining whether the motor has a fault according to a comparison result. The application improves the accuracy and robustness of motor fault diagnosis.