Online Sensorless Position Estimation for Switched Reluctance Motors Using One Current Sensor

• Published in: IEEE transactions on power electronics Vol. 31; no. 10; pp. 7248 - 7263
• Main Authors: Chun Gan, Jianhua Wu, Yihua Hu, Shiyou Yang, Wenping Cao, Kirtley, James L.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.10.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bus-current-sensor; Buses (vehicles); Estimating techniques; Estimation; Excitation; High speed; Inductance; Motors; Optical wireless; position estimation; Position sensing; Pulse duration modulation; pulse width modulation (PWM); Reluctance; Reluctance motors; Rotors; Sensorless control; Sensors; switched reluctance motors (SRMs); Transistors; Windings; Bus current sensor (BCS); sensorless control; position estimation; switched reluctance motors (SRMs); pulse width modulation (PWM)

This paper proposes an online sensorless rotor position estimation technique for switched reluctance motors (SRMs) using just one current sensor. It is achieved by first decoupling the excitation current from the bus current. Two phase-shifted pulse width modulation signals are injected into the rel...