42results about How to "Achieve brushless" patented technology

The invention relates to an electric excitation part double stator brushless mixed excitation synchronous generator. The generator is composed of a permanent magnet synchronous motor (17) and an electric excitation part (18), magnetic circuits of the two parts are mutually independently, and an armature winding (5) is arranged in a stator core (9) of the permanent magnet part and an outer stator core (12) of the electric excitation part. The electric excitation part is provided with the outer stator core (12) and an inner stator core (11), and a three phase or multiphase exciting winding (10)is placed in the inner stator core (11). Magnitude and phase of current in the exciting winding (10) are changed by virtue of a frequency converter, so as to regulate magnitude and phase of electric excitation electromotive force in the armature winding (5), thus achieving the aim of adjusting total electromotive force and output voltage. The electric excitation part has no air gap, and magnetomotive force required by electric excitation is small, thus field adjustment efficiency is high. The electric excitation magnetomotive force can not cause irreversible demagnetization on permanent magnet, and brushless alternating current excitation is adopted, thus reliability of motor is high.

The invention discloses a double-mechanical port electromechanical energy converter, belongs to the technical field of motors, and aims to solve the problem of the conventional double-mechanical port electromechanical energy converter that a motor has low reliability and large size due to the existence of an electric brush and a sliding ring. A stator, an outer rotor and an inner rotor of the double-mechanical port electromechanical energy converter are coaxially arranged from outside to inside in sequence; an outer air gap is formed between the stator and the outer rotor; an inner air gap is formed between the outer rotor and the inner rotor; the inner rotor is connected with an inner rotary shaft; the outer rotor is connected with an outer rotary shaft; one end of the stator is connected with the inner rotary shaft through a bearing, and the other end of the stator is connected with the outer rotary shaft through a bearing; the stator comprises a stator iron core and a multi-phase stator symmetric winding; an outgoing line of the multi-phase stator symmetric winding is connected with the output end of an inverter; the inner rotor is of a surface permanent magnet rotor structure, an embedded permanent magnet rotor structure or a Halbach permanent magnet array type rotor structure; the outer rotor comprises an outer rotor iron core and an outer rotor winding; and the outer rotor winding is an m-phase short-circuit winding. The double-mechanical port electromechanical energy converter serves as an electromechanical energy converter.

The invention discloses a hybrid vehicle brushless double-stator electric machine which includes an electric machine casing (5). A first stator (1), a magnetic adjusting ring (3) and a second stator (4) are arranged in order from left to right inside the electric machine casing (5). An internal rotor (2) is disposed inside the first stator (1). The internal rotor (2) is connected to an output shat (6) of an internal combustion engine. The output shaft (6) of the internal combustion engine is supported in a left side bearing hole of the electric machine casing (5). The magnetic adjusting ring (3) is connected to a primary decelerator input shaft (3-3) which is supported in a right side bearing hole of the electric machine casing (5). The shaft axes of the first stator (1), the internal rotor (2), and the magnetic adjusting ring (3) are overlapped with the shaft axis of the second stator (4). The electric machine herein has no brush or slip ring structures, can reduce structural complexity of electric machines, has increased reliability, reduces maintenance cost, can help winding heat dissipation and increase dynamic balance of rotors and increases working efficiency.

The invention discloses an axial and radial magnetic flux combined brushless power feedback type permanent magnet speed regulation device. The device comprises an axial and radial magnetic flux combined permanent magnet speed regulator and a slip power feedback control unit; the permanent magnet speed regulator comprises a permanent magnet rotor, a conductor rotor and a three-phase winding statorwhich are concentrically installed; the permanent magnet rotor is fixed to an input shaft and connected with a prime motor; the conductor rotor is fixed to an output shaft and connected with a load; the three-phase winding stator is fixed to a machine shell and connected with the output shaft through a bearing; an axial air gap and a radial air gap exist between the permanent magnet rotor and theconductor rotor; an axial air gap exists between the three-phase winding stator and the conductor rotor; and a stator side winding is connected with the slip power feedback control unit. The space utilization rate of the speed regulator is improved; the torque density of the speed regulator is correspondingly improved; the brushless transmission of the slip power of the conductor rotor to the three-phase winding stator is realized; and stator side power is fed back to a power grid; and the efficient operation of the speed regulator under any operation condition is realized.

The invention discloses a brushless double electromechanical port permanent magnet motor with high torque density, which comprises an annular stator core (1), a modulation rotor and a permanent magnet rotor, and is characterized in that the inner surface of the stator core (1) is provided with closed slots, the slots are internally provided with two sets of windings with the numbers of pole-pairs being unequal, one set of the windings are modulation windings (2), and the other set of the windings are permanent magnet windings (3); the modulation rotor comprises modulation rotor yokes (4), and the modulation rotor yokes (4) form a magnetic field modulation motor structure together with the modulation windings (2) and the permanent magnet rotor; the adjacent modulation rotor yokes (4) are provided with a modulation rotor permanent magnet (5) therebetween, each modulation rotor permanent magnet (5) is of a tangential excitation structure, and the modulation rotor permanent magnets (5) form a permanent magnet motor structure together with the permanent magnet windings (3). The invention further discloses a hybrid power automobile comprising the motor. The motor disclosed by the invention can realize independent control for the rotating speed and the torque of two mechanical ports, realizes blushless windings, is compact in structure and has large output torque.