10 results about "Flux loop" patented technology

The application discloses a kind of power wave transceiver of short-distance wireless power supply of rotating shaft body and transmission method, it is related to short-distance wireless power wave power supply technical field.For the defects that the service life is short, reliability is low, is susceptible to temperature and humidity, salt fog, vibration impact in harsh environment under traditional rotating shaft body carrying battery power supply mode, the device is composed of wireless power wave transmitting circuit, receiving circuit and wireless magnetic coupling circuit, transmitting circuit generates medium-high frequency electromagnetic field without electromagnetic pollution through medium-high frequency converter and resonance circuit, receiving circuit rotates synchronously with rotating shaft body, realizes magnetic energy wireless transmission through closed magnetic flux loop, and power supply for load on shaft body after rectification and voltage stabilization.

A disruptive improvement in reactors is disclosed. The operating principal of this invention is to create an abrupt change, in the stored potential energy, Wm, in magnetic flux (77), via at least one localized increase (87) and at least one localized decrease (82), of the magnetic field intensity, within the boundaries of a flux loop. Since current flow through a reactor can not change abruptly, a paradox is created. To counteract mentioned paradox, at least some magnetic flux (77a) components, may be forced to jump a non- magnetic-section (88), dependent on the power level, of the frequency, components in mentioned flux. The disclosed arrangement may cause a non-linear response, resulting in advantages over a prior art reactor, (with a linear response); including: reduce reactance, reduced apparent power and increased true power factor, at the fundamental power frequency, f(fundamental). A new circuit symbol (70), for the invention, is suggested.

The application discloses a large initial thrust electromagnetic actuator with multi-magnetic field mixing effect and belongs to the technical field of aerospace. The application solves the problem that the existing electromagnetic actuator has small initial thrust and causes the spacecraft to be unable to separate at a predetermined speed. The stator comprises an outer magnetic structure, an inner magnetic structure, an upper magnetic structure, a lower magnetic structure and a stator coil structure, the lower magnetic structure comprises a lower magnetic yoke and a lower inner axial magnetic ring and a lower outer axial magnetic ring which are installed at the top end of the lower magnetic yoke, and the inner magnetic structure comprises an inner magnetic yoke and an inner upper radial magnetic ring, an inner middle axial magnetic ring and an inner lower radial magnetic ring which are coaxial and are sequentially sleeved on the outside of the inner magnetic yoke from top to bottom. The magnetic flux loop formed by two small-height radial magnetizing permanent magnetic rings is utilized to increase the air gap magnetic field intensity of the part close to the stator coil between the two high-height radial permanent magnetic rings, so that the ampere force borne by the mover coil is increased, and the initial thrust is increased.

The application discloses a tripping assembly, wherein a permanent magnet assembly is arranged in a U-shaped cavity of a magnetic yoke, the overall volume of the tripping assembly is reduced, the permanent magnet and a magnetic conducting sheet are respectively connected to a horizontal arm and a second vertical arm of the magnetic yoke, the magnetic resistance of the permanent magnet magnetic circuit is minimized and stabilized, meanwhile, the magnetic flux generated by the permanent magnet is divided into two magnetic flux branches with different sizes, and the magnetic flux branch with smaller magnetic flux is used to provide magnetic force for an armature, the tripping assembly has stable magnetic flux and long service life, and can meet the working conditions of small current and low power consumption. The application further discloses an electromagnetic tripping device provided with the tripping assembly, and an electrical protection device provided with the electromagnetic tripping device.

An electric motor includes: a rotor configured to rotate about an axis and a stator radially spaced from the rotor. The stator includes a plurality of stator phases arranged along the axis, each stator phase including a pair of flux loops and a coil extending about the axis and disposed between the pair of flux loops. Each flux loop includes a plurality of teeth. These teeth are configured to route magnetic flux. The laminations in the stator and rotor may have different lamination densities to achieve magnetic flux routing. The air gap between the rotor and stator may be a variable distance.

The invention provides a three-column winding structure and a single-phase three-column magnetically controlled reactor, belongs to the technical field of magnetically controlled reactors, adopts a three-column iron core structure, and comprises a central column and two symmetrically distributed side columns. The core technology innovation lies in that the central column is formed by alternately overlapping double-phase composite magnetic material sheet layers and silicon steel sheet layers, the double-phase composite magnetic material is composed of a soft magnetic phase and a hard magnetic phase, the soft magnetic phase provides high magnetic conductivity to support main magnetic flux transmission, and the hard magnetic phase provides high coercive force to maintain residual magnetism stability. The central column is provided with different soft and hard magnetic phase volume ratio distribution in the axial direction, and gradient magnetic performance optimization is achieved. The control winding is formed by winding a flat copper wire, the working winding adopts a circular copper wire, and the air gap structure and the magnetic circuit connecting part which are accurately designed are matched to form a complete magnetic flux loop, so that the technical problem of large eddy current loss of the traditional magnetically controlled reactor is solved.

The embodiment of the invention provides a magnetic element and power equipment. The magnetic element comprises a magnetic core shell, a middle column and a winding part; the winding component and the middle column are both contained in an inner cavity of the magnetic core shell, the winding component is wound on the outer surface of the middle column, and the two ends of the middle column are both connected with the inner wall of the magnetic core shell. The magnetic material of at least a portion of the magnetic core housing is different from the magnetic material of the center pillar. Due to the fact that the winding component and the middle column are both contained in the inner cavity of the magnetic core shell, namely, the winding component and the middle column are contained in the magnetic core shell, the middle column and the magnetic core shell can form a carrier of a closed magnetic flux loop, magnetic flux of the winding component can be restrained in the magnetic core shell, leakage magnetic flux is reduced, and therefore the inductance value of the magnetic element can be increased.

The invention relates to a novel micro motor with a yoke-free stator. The technical problem that a stator of an existing traditional micro motor has defects and the like is solved. Comprising a motor shell and a controller shell arranged at one end of the motor shell, a motor shaft with a motor rotor on the outer side is rotationally arranged in the motor shell in a penetrating mode, a yoke-free stator located on the outer side of the motor rotor in the circumferential direction is arranged on the inner side of the motor shell, and a plurality of stator tooth parts are arranged on the outer side of the yoke-free stator in the circumferential direction. Tooth grooves are formed in the stator tooth parts, a stator groove is formed between every two adjacent stator tooth parts, and a through groove structure communicated with the inner side of the yoke-free stator is arranged at the bottom of each stator groove. The invention has the advantages that: a yoke part required by a magnetic flux loop in a traditional stator is thoroughly removed by utilizing the design of the yoke-free stator, eddy current and magnetic hysteresis loss are radically reduced, the efficiency is particularly obviously improved at a high rotating speed, the temperature rise of the motor is lower, and the motor is lighter and smaller and realizes extremely high power density under the condition of outputting the same power.

The utility model discloses an ultrasonic wireless electric energy transmission device which comprises a wireless transmitting module and a wireless receiving module. The wireless receiving module comprises a secondary side support, a secondary side magnetic core and a secondary side coil, the secondary side support is of an annular cylinder structure, and the secondary side magnetic core and the secondary side coil are fixed to the outer wall of the secondary side support in a sleeving mode; the wireless transmitting module comprises a primary side support, a primary side magnetic core and a primary side coil, the primary side support and the primary side magnetic core are of a fan-shaped structure, the primary side magnetic core is fixedly connected into the primary side support, the section of the primary side magnetic core is of a first C-shaped structure, at least one side of the first C-shaped structure is inclined to the axis of the secondary side support, and the primary side coil is wound on the primary side magnetic core; an air gap is arranged between the wireless transmitting module and the wireless receiving module, and a magnetic flux loop is formed between the secondary side magnetic core and the primary side magnetic core. The ultrasonic wireless electric energy transmission device disclosed by the utility model can improve the application of a wireless transmission system in a complex environment and the stability of high-power transmission.