An Inverter Nonlinearity-Independent Flux Observer for Direct Torque-Controlled High-Performance Interior Permanent Magnet Brushless AC Drives
   
Yazarlar (3)
Doç. Dr. Mikail KOÇ The University Of Sheffield, İngiltere
Jiabin Wang The University Of Sheffield, İngiltere
Tianfu Sun The University Of Sheffield, İngiltere
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı IEEE Transactions on Power Electronics (Q1)
Dergi ISSN 0885-8993 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 01-2017
Cilt / Sayı / Sayfa 32 / 1 / 490–502 DOI 10.1109/TPEL.2016.2524644
Makale Linki http://ieeexplore.ieee.org/document/7398113/
Özet
This paper introduces a novel flux observer for direct torque controlled interior permanent magnet brushless AC (IPM-BLAC) drives over a wide speed range including standstill. The observer takes machine nonlinearities into account and is independent of inverter nonlinearities, dead time, and armature resistance variation at steady states since such inaccuracies are compensated quickly by measured phase currents. Magnetic saturations in the stator and rotor cores, cross-coupling effects of flux linkages of the motor, and spatial harmonics in the magnetomotive force are all considered in the novel scheme. There is no filter; hence, no delays and oscillatory responses like in conventional schemes where filters are employed to prevent integrator drift issue. Superiority of the observer when compared to the state-of-the-art schemes has been illustrated by both extensive simulations and experimental results of a 10-kW IPM-BLAC machine designed for traction applications.
Anahtar Kelimeler
torque control (DTC) | flux observer | high-performance drives | IPMSM | nonlinear inverter