A kind of halbach magnetic steel structure permanent magnet synchronous motor and assembly method

Abstract

The invention discloses a Halbach magnetic steel structure permanent magnet synchronous motor and an assembly method. The Halbach magnetic steel structure permanent magnet synchronous motor comprises: a lock screw, a magnetic-isolating anti-collision pad, a magnetic steel analog block, a synthetic die case, a rigid support frame, magnetic poles, a rotor yoke and a concentric apparatus, wherein the Halbach magnetic steel is mounted on the synthetic mold case via the lock screw; an end surface constraint of the Halbach magnetic steel can actively control bonding accuracy; the magnetic isolating anti-collision is used to prevent wear of the Halbach magnetic steel and the lock screw; and the magnetic steel analog block is used to keep intervals between the magnetic poles t to be uniform. Through mechanical finishing, it is ensured that mating surface position accuracy of an inner hole of the synthetic mold case to be consistent with mating surface accuracy of a yoke of the permanent magnet synchronous motor rotor; a thickness of an outer wall of the hole is appropriately increased, so as to improve material rigidity and ensure geometric tolerance of a mounting surface. According to the Halbach magnetic steel structure permanent magnet synchronous motor and the assembly method provided by the invention, a problem of high-accuracy assembly of the Halbach magnetic steel is solved; rapid assembly of the Halbach magnetic steel is realized; and mass production of the product is realized.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor with a Halbach magnetic steel structure, which is suitable for a large-scale magnetic suspension control moment gyroscope, and belongs to the technical field of permanent magnet synchronous motors. Background technique [0002] Inertial actuators are generally used for attitude adjustment and control of spacecraft platforms such as satellites and space stations. Among them, the control moment gyroscope based on magnetic suspension bearing support is an important category. The control torque gyro provides torque output with a certain precision to the outside by driving the motor to adjust the angular momentum vector of the rotor in the gyro. The structural design and high-precision control of the drive motor is one of the key technologies for the magnetic suspension control torque gyroscope. [0003] For the drive motor, it is necessary to meet the high precision, low speed, high torque, lig...

AI Technical Summary

Problems solved by technology

Due to the large repulsion between the Halbach magnets for permanent magnet synchronous motors and the irregular shape, it brings great difficulties to the assembly method and precision. Therefore, it is almost impossible to directly bond the traditional tile-shaped N-S poles. accomplish

The magnets are prone to bumps and cracks between each other, which makes it difficult to assemble the rotor of the permanent magnet synchronous motor, and the precision cannot meet the requirements of the product.

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