Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Flux Weakening Control for Surface Mounted Permanent Magnet Synchronous Machine Driven by Dual Inverter
Authors Youngnam Kim ; Yongjae Lee ; Jung-Ik Ha
DOI 10.6113/TKPE/2013.18.5.437
Page pp.437-442
ISSN 1229-2214
Keywords dual inverter; flux weakening; permanent magnet synchronous machine(PMSM)
Abstract For open-end permanent magnet synchronous machine(PMSM) with dual inverter system, where one inverter is connected to the source and the other is flying, the dc link voltage of the flying inverter can be boosted through the machine. For this reason, when compared with single inverter drive system, higher voltage can be applied to PMSM, and higher torque can be generated in the flux weakening region. In this case, however, active and reactive powers are separately supplied by each inverter to maintain the dc link voltage of flying inverter. Therefore, the required flux weakening control is different from the conventional method for a single inverter drive system. This paper proposes the novel flux weakening control method which maximizes the active voltage component in a dual inverter PMSM drive system. The proposed method was demonstrated and verified through experimental results.