4 results about "Split magnet" patented technology

This invention discloses a modular pulse-magnetized double-sided high-temperature superconducting linear synchronous motor. The motor uses high-temperature superconducting bulk material as the excitation magnet for the mover and utilizes a pulse magnetization device integrated into the magnetization section of the linear motor to achieve in-situ high remanence magnetization of the mover. The system consists of a pulse power supply system, a modular superconducting mover system, and a double-sided stator system. The pulse power supply system uses a large-capacity capacitor bank and, in conjunction with the split magnet coils in the motor's magnetization section, generates a millisecond-level strong pulsed magnetic field to achieve rapid high remanence magnetization of the high-temperature superconducting bulk material. The modular superconducting mover maintains the required low temperature for superconductivity through a Dewar structure, and the number of superconducting mover modules can be increased or decreased as needed to meet different thrust requirements. Simultaneously, the impact of local quenching is limited to a single module, preventing quenching from affecting other movers and improving system reliability. The double-sided stator structure reduces normal electromagnetic force, improves high-speed operation stability, and fully utilizes the double-sided high magnetic field advantage of the high-temperature superconducting mover to enhance the motor's thrust performance. This structure achieves a high degree of integration between the magnetization device and the motor stator, significantly improving the power density, operational stability, and maintenance convenience of the linear motor. It is suitable for applications with high requirements for the thrust performance and reliability of linear motors, such as electromagnetic launch and ultra-high-speed rail transit.

The application provides a high-temperature superconducting magnet magnetic confinement plasma thrust device, belonging to the technical field of space electric propulsion, and using a superconducting magnet to replace a conventional magnet, which is compact in structure and high in reliability. In the application, a vacuum ceramic tube is inserted at a center axis, a spiral antenna with different sizes is sleeved on different functional areas of the vacuum ceramic tube, a Dewar No.1 is sleeved on the right side of the ceramic tube, a radio frequency hole is opened on the upper part of the Dewar No.1 to connect a radio frequency flange, a refrigeration hole is opened on the lower part of the Dewar No.1 to connect a refrigeration flange, a Dewar No.2 is sleeved on the left side of the ceramic tube, a radio frequency hole is opened on the upper part of the Dewar No.2, the Dewar No.1 and the Dewar No.2 are connected through flanges, a main framework with a flange is sleeved on an inner barrel of the Dewar No.1, a superconducting magnet assembly is placed on the main framework, a split magnet is compressed through an epoxy compression end cover and a screw rod, insulation is performed through alternately inserting insulating epoxy plates and insulating aluminum plates between the split magnets, and a shell wiring assembly is inserted into a flange opening of the Dewar No.2. The application realizes conduction cooling of a superconducting magnet assembly.

The invention discloses a novel magnetic flux switching motor with split magnets and an analytical modeling method thereof, the motor comprises a rotor, a stator, stator teeth, stator slots, stator slot permanent magnets, rotor slots and permanent magnets between the stator slots, and each permanent magnet is inserted into an iron core at the middle position and split into two sections of permanent magnets with equal arc angles; the permanent magnets of the stator slots are magnetized radially, and the permanent magnets among the stator slots are magnetized tangentially; the analysis modeling method comprises the following steps: firstly, dividing a motor into sub-domains to be solved, then deducing a vector magnetic potential general solution expression of each sub-domain, solving direct current and harmonic coefficients in the vector magnetic potential general solution expression according to boundary conditions among the sub-domains, and on the basis of the calculated magnetic potential expression, calculating the magnetic potential of the motor. And air-gap magnetic fields under an open-circuit field and an armature reaction field can be respectively obtained, so that the electromagnetic torque can be analyzed and calculated. Compared with a traditional motor structure, the motor has better electromagnetic performance, the analysis result of the method is basically consistent with the finite element result, and the correctness of an analysis model is verified.

The invention discloses an interpolated split magnet supporting structure. The interpolated split magnet supporting structure comprises a split magnet, an interpolated central cylinder and an interpolated magnet supporting structure, the split magnet is fixedly placed in the vacuum chamber of the interpolated magnet supporting structure through the low-temperature cold-contraction flexible compensation structure, and the split magnet and the interpolated magnet supporting structure fall into the center position of the cylinder body in the axis direction of the interpolated center cylinder through installation equipment and are accurately positioned. The inserted split magnet structure is circumferentially fixed by adjusting and tensioning the locking wedge block structure, and circumferential deflection of the inserted split magnet caused by the influence of electromagnetic force under the back field condition is limited. The two ends of the interpolated magnet supporting structure fix the interpolated magnet to the interpolated center cylinder in the axial direction through a pull rod and a fixing plate, and the interpolated split magnet is axially fixed in the back field magnet system. According to the invention, the high-precision requirement of coaxial installation of the symmetric split magnet can be effectively met.