4results about How to "Increase sine" patented technology

The application relates to a rotor assembly, a rotor structure and a motor, the motor comprising a stator structure and a rotor structure, the rotor structure being formed by rotationally stacking an even number of rotor assemblies, the rotor assembly comprising a rotor core and a magnetic tile, the rotor core comprising an outer convex circular arc part and an inner concave circular arc part, a plurality of outer convex circular arc parts and a plurality of inner concave circular arc parts being arranged in sequence and staggered along the circumference of the rotor core, a magnetic tile being attached to each inner concave circular arc surface, and adjacent outer convex circular arc parts and magnetic tiles forming a pair of magnetic poles; the magnetic tile and the inner concave circular arc surface need to satisfy:;; the adjacent outer convex circular arc parts and the magnetic tile form a pair of magnetic poles, compared with the pair of magnetic poles using two magnetic tiles, the number of magnetic tiles used is effectively reduced; the angle of the inner concave circular arc surface and the outer convex circular arc surface and the width of the magnetic tile are limited, so that the area of the outer convex circular arc part is larger than the area of the magnetic tile, the width of the magnetic tile is reduced, the width of the magnetic tile is not too small, the volume of the magnetic tile is reduced, and the amount of permanent magnet material is reduced.

The invention provides a rotor structure and a motor. The rotor structure comprises a rotor body and a plurality of magnetic bodies. The rotor body comprises a rotor yoke part and a plurality of rotor salient poles, the rotor salient poles are arranged on the outer circumferential surface of the rotor yoke part, and the plurality of rotor salient poles are arranged at intervals along the circumferential direction of the rotor yoke part; a mounting groove is formed between every two adjacent rotor salient poles; the magnetic bodies are arranged in the mounting grooves, and the plurality of magnetic bodies and the plurality of rotor salient poles are alternately arranged; grooves are formed in the side faces, making contact with the magnetic bodies, of the rotor salient poles. The motor comprises the rotor structure. The grooves are formed in the side faces, making contact with the magnetic bodies, of the salient poles of the rotor, magnetic leakage can be reduced, the sine degree of air gap flux density can be improved, the use amount of the magnetic bodies is reduced, meanwhile, counter electromotive force is effectively improved, the harmonic content of the counter electromotive force is reduced, and the operation performance of the motor can be improved, such as torque pulsation and noise reduction.

The present application relates to a current sharing method for a centralized control interleaved parallel circuit, comprising setting a duty cycle of a first parallel circuit in the interleaved parallel circuit as a first duty cycle, setting a duty cycle of a second parallel circuit in the interleaved parallel circuit as a second duty cycle; setting a second duty cycle compensation quantity for ensuring that currents of the two parallel circuits are equal at the end of one switching cycle based on a ratio between a bus voltage value of the interleaved parallel circuit and a voltage difference between a first duty cycle, an input voltage sampled at a zero-crossing point of a triangular carrier of the first parallel circuit and an input voltage sampled at a period value. The present application also relates to a computer readable storage medium and a centralized control interleaved parallel circuit. The present application can solve the problem of uneven current among circuits in a low-cost and easy-to-implement manner, and improve the sinusoidal degree of the second parallel circuit.

This invention provides a rotor and a motor. The rotor (10) has multiple permanent magnet slots (11). Any two adjacent permanent magnet slots (11) are symmetrical about a second center line (2). The outer contour of the rotor (10) between any two adjacent second center lines (2) is symmetrical about a first center line (1), and includes: a first arc segment (101) located in the middle, two second arc segments (102) extending outward from both ends of the first arc segment (101), two transition segments (103) extending outward from the two second arc segments (102), and two third arc segments (104) extending outward from the two transition segments (103); the center and radius of the second arc segments (102) are different from those of the first arc segment (101). The rotor of this invention reduces torque pulsation and improves motor efficiency without increasing manufacturing difficulty and cost.