Predictive Torque Control Algorithm for a Five-Phase Induction Motor Drive for Reduced Torque Ripple With Switching Frequency Control

2020 ◽  
Vol 35 (7) ◽  
pp. 7282-7294 ◽  
Author(s):  
Apekshit Bhowate ◽  
Mohan V. Aware ◽  
Sohit Sharma
Keyword(s):  
Induction Motor ◽  
Control Algorithm ◽  
Frequency Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Motor Drive ◽  
Switching Frequency ◽  
Induction Motor Drive

scholarly journals Direct Torque Control for Three-Level Neutral Point Clamped Inverter-Fed Induction Motor Drive

2012 ◽  
Vol 2 (2) ◽  
pp. 201-208 ◽  
Author(s):  
M. K. Sahu ◽  
A. K. Panda ◽  
B. P. Panigrahi
Keyword(s):  
Induction Motor ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Neutral Point ◽  
Torque Control ◽  
Control Technique ◽  
Motor Drive ◽  
Switching Frequency ◽  
Induction Motor Drive ◽  
Space Vector

Direct torque control (DTC) is a control technique in AC drive systems to obtain high performance torque control. The classical DTC drive contains a pair of hysteresis comparators and suffers from variable switching frequency and high torque ripple. These problems can be solved by using space vector depending on the reference torque and flux. In this paper the space vector modulation technique is applied to the three-level Neutral Point Clamped (NPC) inverter control in the proposed DTC-based induction motor drive system, resulting to a significant reduce of torque ripple. Three-level neutral point clamped inverters have been widely used in medium voltage applications. This type of inverters have several advantages over standard two-level VSI, such as greater number of levels in the output voltage waveforms, less harmonic distortion in voltage and current waveforms and lower switching frequencies. This paper emphasizes the derivation of switching states using the Space Vector Pulse Width Modulation (SVPWM) technique. The control scheme is implemented using Matlab/Simulink. Experimental results using dSPACE validate the steady-state and the dynamic performance of the proposed control strategy.

scholarly journals Torque ripples improvement of direct torque controlled five-phase induction motor drive using backstepping control

2020 ◽  
Vol 11 (1) ◽  
pp. 64
Author(s):  
Hamdi Echeikh ◽  
Ramzi Trabelsi ◽  
Hichem Kesraoui ◽  
Atif Iqbal ◽  
Mohamed Faouzi Mimouni
Keyword(s):  
Induction Motor ◽  
Direct Torque Control ◽  
Control Unit ◽  
Torque Ripple ◽  
Torque Control ◽  
Motor Drive ◽  
Switching Frequency ◽  
Induction Motor Drive ◽  
Load Torque ◽  
Torque Ripples

The paper proposes Direct Torque Control (DTC) of a five-phase induction motor drive with reduced torque ripple. The method presented here is the DTC Backstepping based on the classic DTC working with a constant switching frequency of the inverter. Another remarkable aspect is the complexity of the method proposed, both in the control unit of the inverter and in the number of correctors necessary for the control of the torque. The selection table and hysteresis have been eliminated. This method significantly improves the torque and flux oscillations and improves the dynamics of the drive by making it less sensitive to load torque disturbances. The proposed method is developed and designed using Matlab/SIMULINK to show the eectiveness and performances of the DTC-Backstepping.

Novel torque ripple minimization algorithm for direct torque control of induction motor drive

2009 ◽  
Vol 13 (2) ◽  
pp. 155-163 ◽  
Author(s):  
Bo Long ◽  
Gui-fang Guo ◽  
Xiao-hong Hao ◽  
Xiao-ning Li
Keyword(s):  
Induction Motor ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Minimization Algorithm

scholarly journals Current Ripple Reduction of Predictive Torque-Controlled Induction Motor Drive Using Delta-Star Switchover

2021 ◽  
Vol 11 (6) ◽  
pp. 2863
Author(s):  
Ondrej Lipcak ◽  
Pavel Karlovsky ◽  
Pavel Kobrle ◽  
Jan Bauer
Keyword(s):  
Induction Motor ◽  
Harmonic Distortion ◽  
Torque Ripple ◽  
Theoretical Background ◽  
Torque Control ◽  
Total Harmonic Distortion ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Phase Voltage ◽  
The Difference

The current and torque ripple of inverter-fed induction motor drives is an inherent problem of control strategies working with switching frequencies in the range of multiple kilohertz, such as direct torque and, more recently, predictive torque control. If the drive operates in a wide-speed and wide-torque range and is equipped with a machine with an accessible terminal block whose winding is nominally connected in delta, then the current and torque ripple can be reduced by utilizing the delta-star winding changeover technique. When the winding configuration is switched from delta to star, the instantaneous motor phase voltage peak is lowered, and its total harmonic distortion is reduced. However, the control strategy must be adjusted according to the actual winding topology, mainly due to the difference in the coordinate transformations of the measured currents and the difference between the phase voltage vectors obtained from the inverter. This paper proposes a predictive torque control of an induction motor drive with a switchable delta-star winding configuration. The paper is supported by theoretical background, and the key idea is verified by simulations in MATLAB/Simulink and experiments conducted on a dSPACE-controlled 5.5-kW laboratory drive. The simulations validated the presented equations and show the effects of not respecting the actual winding topology. The experiments mainly focused on analyzing the total harmonic distortion of the currents and consumed electrical power in multiple operating points.

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