Dae-Hyun Cho, Yeongsu Bak, and Kyo-Beum Lee, "Method for Estimating Initial Rotor Position for IPMSM Using Subdivided Voltage Vectors Based on Inductance Variation," Journal of Power Electronics, in press. -SCIE > Paper

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Paper

International Journals Dae-Hyun Cho, Yeongsu Bak, and Kyo-Beum Lee, "Method for Estimating Initial Rotor Position for IPMSM Using Subdivided Voltage Vectors Based on Inductance Variation," Journal of Power Electronics, in press. -SCIE

2020

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This paper proposes a method for estimating the initial rotor position for an interior permanent-magnet synchronous motor

(IPMSM) using subdivided voltage vectors based on inductance variation. Since the stator inductance of the IPMSM varies

depending on rotor position, the current that flows through the entire IPMSM drive system would be different depending on the

rotor position when a voltage vector is applied to the stator winding of the IPMSM. Therefore, the rotor position can be estimated

by using the difference in the currents. In the conventional method, which uses six voltage vectors for estimating the initial rotor

position, the estimated position error is increased in specific regions where the phase angle of the applied voltage vector is

remarkably different from that of the N pole of the rotor. This paper presents an advanced method using subdivided voltage

vectors to estimate the initial rotor position more precisely in the specific region. The effectiveness of the advanced estimation

method is verified by simulation and experimental results.

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