Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Initial Rotor Position Detection a PM Synchronous Motor and Speed Control of an Elevator Door
Authors Ki-Young Song ; Hyun-Cheal Oh ; Kwan-Yuhl Cho ; Hag-Wone Kim
DOI 10.6113/TKPE/2013.18.6.556
Page pp.556-564
ISSN 1229-2214
Keywords PMSM; elevator door; incremental encoder; rotor position; reopen
Abstract This paper proposes an initial rotor position detecting algorithm of a PM synchronous motor using an incremental encoder. The proposed algorithm estimates the phase offset between the rotor magnetic flux and the Z-pulse of the incremental encoder by applying six aligning mode current control. The absolute rotor position for driving a PM synchronous motor is calculated by using the phase offset of the Z pulse and A, B pulse signals of the encoder. The PMSM drives based on the estimated rotor position is applied to the elevator door system. The door length is measured on line at first setup of the elevator. The speed control for open, close, and reopen of the elevator door is also presented and the proposed algorithm for the elevator door system is verified by experiment.