Invention Grant
- Patent Title: Control device and a method for controlling magnetic levitation and torque generation
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Application No.: US15737542Application Date: 2016-05-11
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Publication No.: US11286983B2Publication Date: 2022-03-29
- Inventor: Rafal Jastrzebski , Pekko Jaatinen
- Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO
- Applicant Address: FI Lappeenranta
- Assignee: LAPPEENRANNAN TEKNILLINEN YLIOPISTO
- Current Assignee: LAPPEENRANNAN TEKNILLINEN YLIOPISTO
- Current Assignee Address: FI Lappeenranta
- Agency: Nixon & Vanderhye
- Priority: FI20155503 20150626
- International Application: PCT/FI2016/050311 WO 20160511
- International Announcement: WO2016/207481 WO 20161229
- Main IPC: H02P8/38
- IPC: H02P8/38 ; H02P7/29 ; F16C32/04 ; H02P4/00 ; H02P27/08 ; H02K11/215 ; H02P25/16 ; H02P29/40 ; H02K11/21 ; G05B17/02 ; H02K7/09

Abstract:
An electrical drive includes an electrical machine, a first converter stage connected to terminals of stator phase-windings of the electrical machine, and a second converter stage connected to intermediate points of the stator phase-windings. A control device determines first component currents and second component currents so that torque is generated in accordance with electrical machine control and magnetic levitation force is directed to a rotor of the electrical machine in accordance with levitation control when portions of the phase-windings between the terminals and the intermediate points carry both the first and second component currents and the other portions of the phase-windings carry the first component currents. The reference currents for the first converter stage are determined based on the first and second component currents, and the reference currents for the second converter stage are determined based on the second component currents.
Public/Granted literature
- US20180180095A1 A CONTROL DEVICE AND A METHOD FOR CONTROLLING MAGNETIC LEVITATION AND TORQUE GENERATION Public/Granted day:2018-06-28
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