Three-dimensional air gap Halbach permanent magnet arc-shaped motor for astronomical telescope and control method of three-dimensional air gap Halbach permanent magnet arc-shaped motor
An astronomical telescope and arc motor technology, which is applied in motor generator control, electronic commutation motor control, control system and other directions, can solve the problems of low numerical control precision, large start-up impact, low transmission efficiency, etc., to increase the area, The effect of improving torque density and improving utilization
Active Publication Date: 2015-08-19
SOUTHEAST UNIV
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The patent "ultra-low-speed precision arc motor for large-scale astronomical telescope (CN101174784)" introduces a high-torque AC rare earth permanent magnet synchronous servo motor, which realizes the arc motion directly driven by a large-caliber astronomical telescope; the patent "arc motor (CN2132329Y )” introduces an arc-shaped stator motor, which includes an arc-shaped stator and a copper flywheel rotor. The working machine is directly driven by the rotor shaft to achieve low-speed operation. It has the advantages of simple structure and low cost; Motor-driven CNC electric screw press (CN103331926A)" introduces a CNC electric screw press driven by an arc motor, which solves the problems of large start-up shock, difficult maintenance, low transmission efficiency, high energy consumption, and low CNC precision. question
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[0025] The present invention will be further explained below in conjunction with the drawings.
[0026] A three-dimensional air gap Halbach permanent magnet arc motor for astronomical telescopes, such as figure 1 Shown, including stator and rotor, such as image 3 As shown, the stator includes four stator units, each stator unit adopts an arc structure; the stator unit includes a stator core and a coil, the stator core adopts a 10-slot structure, and the coil is arranged in the slot; The rotor includes a permanent magnet and a rotor core, and the permanent magnet is arranged on the rotor core. The stator units are evenly distributed along the circumference of the rotor and fixed by non-magnetically conductive brackets. The coil winding adopts fractional slot winding, and the coil winding arrangement is: UVWUVWUVW.
[0027] Such as figure 2 As shown, the rotor has a 192-pole structure and adopts a double-sided Halbach permanent magnet structure; and each stator unit can independe...
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The invention discloses a three-dimensional air gap Halbach permanent magnet arc-shaped motor for an astronomical telescope and a control method of the three-dimensional air gap Halbach permanent magnet arc-shaped motor. The three-dimensional air gap Halbach permanent magnet arc-shaped motor comprises a stator part and a rotor part, wherein the stator part comprises four stator units, each stator unit is of an arc-shaped structure, a rotor is of a 192-pole structure, and is of a dual-faced Halbach permanent magnetic structure, so that the torque pulsation can be effectively inhibited; each stator unit is capable of independently driving the corresponding rotor to move; an air gap structure of a permanent magnet is of a three-dimensional air gap structure. A winding adopts a fractional slot concentrated winding, so that harmonic waves are effectively inhibited. According to the three-dimensional air gap Halbach permanent magnet arc-shaped motor, a silicon steel sheet and a copper material are saved, and the requirements of the astronomical telescope on low speed, large torque and high precision can be met.
Description
Technical field [0001] The invention relates to a novel permanent magnet arc motor suitable for the field of astronomy, which can meet the characteristic requirements of low speed, large torque and high precision. It belongs to the field of motor and control. Background technique [0002] As people's exploration of the universe continues to deepen, the requirements for astronomical telescopes are getting higher and higher. Astronomical telescopes must not only have a precise optical system, but also a high-precision transmission drive system to accurately track the observed target to obtain accurate information about the observed target. Therefore, a smooth and stable low-speed high-precision transmission system is very important for astronomical telescopes. [0003] Foreign countries have successfully applied Arc PMSM to direct large-scale astronomical telescopes, such as the VLT telescope of the European Southern Observatory, the Subaru telescope of the Japanese Astronomical Ob...
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Login to View More IPC IPC(8): H02K16/00H02K1/16H02K1/27H02P21/00
Inventor 房淑华郭凯凯阳辉林鹤云
Owner SOUTHEAST UNIV