Improved rotor position determination for a sensorless star‐connected PMSM drive using Direct Flux Control. Issue 17 (28th May 2019)

• Record Type: Journal Article
• Authors: Schuhmacher, Klaus; Grasso, Emanuele; Nienhaus, Matthias
• Is Part Of: Journal of engineering. Volume 2019:Issue 17(2019)
• Page Start: 3749
• Page End: 3753
• Publication Date: 2019-05-28
• Subjects: position control -- permanent magnet motors -- sensorless machine control -- machine control -- synchronous motor drives -- rotors -- microcontrollers; direct flux control -- voltage measurements -- machine star point -- low speeds -- improved position estimation algorithm -- DFC technique -- open‐loop driving -- improved rotor position determination -- sensorless star‐connected PMSM; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2018.8055
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : A technique for driving a star‐connected PMSM without a position or speed sensor, which is known in the literature as Direct Flux Control (DFC), is described here. This technique is based on voltage measurements at the machine star point and can work even at very low speeds including standstill. The underlying principle of this technique is outlined and an improved position estimation algorithm allowing the exact reconstruction of the direction of maximum inductance is presented. The DFC technique is implemented on a microcontroller board and experimental validation is conducted on a PMSM both for quasi‐static characterisation and for open‐loop driving.