US 12,021,461 B1
High-speed motor system with air bearing supporting and control method thereof
Jianxin Shen, Hangzhou (CN); Dan Shi, Hangzhou (CN); Kai Luo, Hangzhou (CN); Jinhui Ye, Hangzhou (CN); Jinhui Gao, Hangzhou (CN); Yunchong Wang, Hangzhou (CN); and Xiaoyan Huang, Hangzhou (CN)
Assigned to Zhejiang University, Hangzhou (CN)
Filed by Zhejiang University, Hangzhou (CN)
Filed on Jan. 4, 2024, as Appl. No. 18/404,293.
Claims priority of application No. 202310414962.0 (CN), filed on Apr. 18, 2023.
Int. Cl. H02P 21/00 (2016.01); F16C 32/06 (2006.01); H02K 7/08 (2006.01); H02K 11/21 (2016.01); H02K 11/33 (2016.01); H02K 21/14 (2006.01); H02P 21/05 (2006.01); H02P 21/18 (2016.01); H02P 21/22 (2016.01)
CPC H02P 21/05 (2013.01) [F16C 32/0603 (2013.01); H02K 7/083 (2013.01); H02K 11/21 (2016.01); H02K 11/33 (2016.01); H02K 21/14 (2013.01); H02P 21/18 (2016.02); H02P 21/22 (2016.02); F16C 2380/26 (2013.01); H02P 2207/055 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A high-speed motor system with air bearing support, comprising:
a rotating shaft, air bearings, a motor stator, a motor rotor, and radial displacement sensors,
wherein the radial displacement sensors are arranged in two groups, located outside the rotating shaft at both sides of the motor rotor; the radial displacement sensors are used to detect displacement of the rotating shaft in x-axis and y-axis directions; and
the motor stator is provided with stator slots having armature windings inside; the armature windings are electrically connected to a controller; the armature windings are averagely divided into p winding units according to a number of pole pairs p thereof; the controller comprises p control units that control the winding units respectively; each control unit inputs a damping current component to the corresponding winding unit, for generating an electromagnetic damping force.