Journal ArticleDOI
Speed sensorless control of a six-phase induction motor drive using backstepping control
TLDR
A direct torque and flux control is described for a six-phase asymmetrical speed and voltage sensorless induction machine (IM) drive, based on non-linear backstepping control approach, and the feasibility of the proposed control scheme is verified by simulation and experimental results.Abstract:
In this study, a direct torque and flux control is described for a six-phase asymmetrical speed and voltage sensorless induction machine (IM) drive, based on non-linear backstepping control approach. First, the decoupled torque and flux controllers are developed based on Lyapunov theory, using the machine two axis equations in the stationary reference frame. In this control scheme, the actual stator voltages are determined from dc-link voltage using the switching pattern of the space vector pulse-width modulation inverter. Then, for a given motor load torque and rotor speed, a so-called fast search method is used to maximise the motor efficiency. According to this method, the rotor reference flux is decreased in the small steps, until the average of real input power to the motor reaches to a minimum value. In addition, a model reference adaptive system-based observer is employed for online estimating of the rotor speed. Finally, the feasibility of the proposed control scheme is verified by simulation and experimental results.read more
Citations
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Journal ArticleDOI
An Improved Fault-Tolerant Five-Phase Induction Machine Using a Combined Star/Pentagon Single Layer Stator Winding Connection
TL;DR: A new combined star/pentagon single layer winding layout that combines the advantages of both star and pentagon connections is proposed for a five-phase induction machine and provides a complete cancellation of the third-order harmonic flux component caused by the induced third sequence currents due to the saturation effect and under unbalanced operation.
Journal ArticleDOI
A novel adaptive control method for induction motor based on Backstepping approach using dSpace DS 1104 control board
TL;DR: In this article, a new adaptive backstepping technique was presented to handle the induction motor (IM) rotor resistance tracking problem, which leads to improve the robustness of the control system.
Journal ArticleDOI
Backstepping direct power control without phase-locked loop of AC/DC converter under both balanced and unbalanced grid conditions
Dan Sun,Wang Xiaohe,Yang Fang +2 more
TL;DR: In this article, a backstepping direct power control (DPC) strategy for the grid-connected AC/DC converter under both balanced and unbalanced grid conditions is presented, which adopts the nonlinear BS controller to the DPC strategy in the stationary reference frame, thus phase-locked loop is unnecessary.
Journal ArticleDOI
Investigation on Zero-Sequence Signal Injection for Improved Harmonic Performance in Split-Phase Induction Motor Drives
P. R. Rakesh,G. Narayanan +1 more
TL;DR: A computationally efficient, carrier-based approach to implement the 4D24SEC PWM, whose implementation is otherwise highly resource intensive, is proposed and demonstrated and validated on a 6-kW split-phase motor drive controlled from a field programmable gate array platform.
Journal ArticleDOI
Feedback Control of Multiphase Induction Machines With Backstepping Technique
TL;DR: By introducing the backstepping approach, the independent stabilization of electromagnetic torque and rotor flux in each plane is obtained and the nonlinear model linearization is based on demonstrated nonlinear variables transformation for i-orthogonal $(\alpha \beta)_{(n)}$ planes.
References
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Journal ArticleDOI
Space vector PWM control of dual three phase induction machine using vector space decomposition
Yifan Zhao,Thomas A. Lipo +1 more
TL;DR: In this paper, a vector space decomposition control of voltage source inverter fed dual three-phase induction machines is presented, where the analytical modeling and control of the machine are accomplished in three two-dimensional orthogonal subspaces and the dynamics of the electromechanical energy conversion related and the nonelectromechanical ECC related machine variables are thereby totally decoupled.
Journal ArticleDOI
Speed sensorless field orientation control of the induction machine
H. Tajima,Yoichi Hori +1 more
TL;DR: In this paper, a speed estimation method for an induction machine and its application to a flux observer-based field orientation (FOFO) control system is presented, where the motor speed is estimated on the basis of the difference between two flux estimators.
Journal ArticleDOI
Induction Machine Analysis for Arbitrary Displacement Between Multiple Winding Sets
Robert H. Nelson,Paul C. Krause +1 more
TL;DR: In this article, an improved method for analyzing many types of unsymmetrical, as well as symmetrical, multiphase induction machines is presented, and the simulation of a 7.5-hp induction machine with two three-phase sets of stator windings fed from two six-step inverters illustrates the application of the method of analysis and shows how the machine torque characteristic may be improved by proper spacing of the winding sets.
Journal ArticleDOI
Digital field oriented control for dual three-phase induction motor drives
TL;DR: In this article, a direct rotor-field-oriented control of a dual-three phase induction motor drive is described, where the stator windings are fed by a current-controlled pulsewidth-modulation (PWM) six-phase voltage-source inverter.
Journal ArticleDOI
Study of Parameter Sensitivity in High-Performance Inverter-Fed Induction Motor Drive Systems
R. Krishnan,Frank C. Doran +1 more
TL;DR: In this paper, the position of the rotor flux is measured in the direct scheme and estimated in the indirect scheme, all of which are all machine-parameter dependent, and analytical expressions are derived to evaluate the effects due to parameter sensitivity.