TY - JOUR
T1 - Direct Torque Control With Feedback Linearization for Induction Motor Drives
AU - Lascu, Cristian
AU - Jafarzadeh, Saeed
AU - Fadali, Sami M.
AU - Blaabjerg, Frede
PY - 2017/3
Y1 - 2017/3
N2 - This paper describes a direct-torque-controlled (DTC) induction motor (IM) drive that employs feedback linearization and sliding-mode control (SMC). A new feedback linearization approach is proposed, which yields a decoupled linear IM model with two state variables: torque and stator flux magnitude. This intuitive linear model is used to implement a DTC-type controller that preserves all DTC advantages and eliminates its main drawback, the flux and torque ripple. Robust, fast, and ripple-free control is achieved by using SMC with proportional control in the vicinity of the sliding surface. SMC assures robustness as in DTC, while the proportional component eliminates the torque and flux ripple. The torque time response is similar to conventional DTC and the proposed solution is flexible and highly tunable due to the P component. The controller design is presented, and its robust stability is analyzed in simulations. The sliding controller is compared with a linear DTC scheme with and without feedback linearization. Extensive experimental results for a sensorless IM drive validate the proposed solution.
AB - This paper describes a direct-torque-controlled (DTC) induction motor (IM) drive that employs feedback linearization and sliding-mode control (SMC). A new feedback linearization approach is proposed, which yields a decoupled linear IM model with two state variables: torque and stator flux magnitude. This intuitive linear model is used to implement a DTC-type controller that preserves all DTC advantages and eliminates its main drawback, the flux and torque ripple. Robust, fast, and ripple-free control is achieved by using SMC with proportional control in the vicinity of the sliding surface. SMC assures robustness as in DTC, while the proportional component eliminates the torque and flux ripple. The torque time response is similar to conventional DTC and the proposed solution is flexible and highly tunable due to the P component. The controller design is presented, and its robust stability is analyzed in simulations. The sliding controller is compared with a linear DTC scheme with and without feedback linearization. Extensive experimental results for a sensorless IM drive validate the proposed solution.
KW - Adjustable speed drives
KW - Direct torque control (DTC)
KW - Feedback linearization
KW - Induction motor (IM) drives
KW - Sliding-mode control (SMC)
UR - http://www.scopus.com/inward/record.url?scp=85007002060&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2016.2564943
DO - 10.1109/TPEL.2016.2564943
M3 - Journal article
AN - SCOPUS:85007002060
SN - 0885-8993
VL - 32
SP - 2072
EP - 2080
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 3
M1 - 7466859
ER -