1 kW/60, 000 min−1 bearingless PM motor with combined winding for torque and rotor suspension. Issue 8 (29th May 2018)

• Record Type: Journal Article
• Authors: Dietz, Daniel; Messager, Gael; Binder, Andreas
• Is Part Of: IET electric power applications. Volume 12:Issue 8(2018)
• Page Start: 1090
• Page End: 1097
• Publication Date: 2018-05-29
• Subjects: suspensions (mechanical components) -- permanent magnet motors -- synchronous motors -- rotors -- electric current control -- torque control -- position control -- invertors -- machine vector control -- magnetic levitation; bearingless PM motor -- winding -- torque suspension -- rotor suspension -- bearingless permanent magnet synchronous machine -- six‐phase winding -- two‐pole motor field wave -- four‐pole levitation field wave -- parallel three‐phase current systems -- decomposition -- controllable current system -- motor torque control -- lateral rotor position control -- lateral force production -- single six‐phase winding -- three‐phase inverter -- field‐oriented control; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2018.0013
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : A comprehensive description of a bearingless permanent magnet synchronous machine is presented including simulation, design, control and measurement focusing on a 1 kW/60, 000 min −1 machine. A combined six‐phase winding is used for the excitation of the two‐pole motor field wave and the four‐pole levitation field wave by applying two parallel three‐phase current systems. The decomposition into the individually controllable current systems for motor torque and lateral rotor position control and the calculation of the relevant control parameters is explained. Measurements give an insight on the controlled motor performance. Thus, it is shown that the combination of torque and lateral force production with a single six‐phase winding, fed by two three‐phase inverters, not only leads to advantages in winding manufacturing but can be operated with a conventional field‐oriented control also at high speed.