SRM sensorless for position control based on a frequency modulation system. (November 2019)

• Record Type: Journal Article
• Authors: Rafael, Silviano; Costa Branco, P.J.; Pires, A.J.
• Is Part Of: Measurement. Volume 146(2019)
• Page Start: 171
• Page End: 178
• Publication Date: 2019-11
• Subjects: Switched Reluctance Machine -- Sensorless SRM -- Indirect position measurement -- Frequency modulation system -- Detection shaft position; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2019.06.032
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: Switched Reluctance Machine sensorless for position control. Presentation of an active method for indirect measurement of shaft angular position. Active method based on frequency modulation. Experimental results studying the influence of temperature, speed and magnetic circuit. Abstract: This paper presents a study of a system to detect the angular position of the shaft of an 8/6 Switched Reluctance Machine (SRM) for position control. The detection system is independent of the machine circuits and is based on the indirect measurement of the induction coefficient, using a diagnostic coil. This induction coefficient, variable with the angular position, is the variable element of an oscillator, producing a frequency modulation. The intrinsic problems that this indirect position measurement system presents, particularly related with position control, are explained. The influence of the machine temperature, of the rotor speed and of the magnetic circuit saturation are also discussed.