Direct Torque Control With Feedback Linearization for Induction Motor Drives

Cristian Lascu, Saeed Jafarzadeh, Sami M. Fadali, Frede Blaabjerg

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

53 Citationer (Scopus)

Resumé

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.
OriginalsprogEngelsk
Artikelnummer7466859
TidsskriftIEEE Transactions on Power Electronics
Vol/bind32
Udgave nummer3
Sider (fra-til)2072-2080
Antal sider9
ISSN0885-8993
DOI
StatusUdgivet - mar. 2017

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Feedback linearization
Torque control
Induction motors
Torque
Sliding mode control
Fluxes
Controllers
Linear motors
Robustness (control systems)
Stators

Citer dette

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abstract = "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.",
keywords = "Adjustable speed drives, Direct torque control (DTC), Feedback linearization, Induction motor (IM) drives, Sliding-mode control (SMC)",
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Direct Torque Control With Feedback Linearization for Induction Motor Drives. / Lascu, Cristian; Jafarzadeh, Saeed; Fadali, Sami M.; Blaabjerg, Frede.

I: IEEE Transactions on Power Electronics, Bind 32, Nr. 3, 7466859, 03.2017, s. 2072-2080.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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KW - Adjustable speed drives

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