scholarly journals Comparative Study of Hysteresis Controller, Resonant Controller and Direct Torque Control of Five-Phase IM under Open-Phase Fault Operation

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1317
Author(s):  
Mahmoud A. Mossa ◽  
Hamdi Echeikh ◽  
Ahmed A. Zaki Diab ◽  
Hassan Haes Alhelou ◽  
Pierluigi Siano
Keyword(s):  
Fault Tolerant ◽  
Direct Torque Control ◽  
Detailed Comparison ◽  
Open Circuit ◽  
Performance Comparison ◽  
Torque Control ◽  
Control Techniques ◽  
Open Phase ◽  
Hysteresis Controller ◽  
Resonant Controller

The need for regulating the operation of unhealthy motor drives has motivated the researchers to modify the control techniques in order to be valid for the new drive state. The use of a fault-tolerant facility is an attractive feature of multiphase machines; therefore, the applicability of different controllers has been established for the operation under open-phase fault conditions. The considered control algorithms were utilized to analyze the operation of the unhealthy system and evaluating the capability of the control to regulate the speed and torque under the fault condition. However, the majority of these studies considered only one control algorithm to be tested with the faulty system without comparing its performance with other techniques. The performance comparison is a vital way to visualize the features and characteristics of each algorithm. For this purpose, this paper deals with the performance comparison of the hysteresis controller, RFOC based on resonant controller and direct torque control (DTC) control under open-circuit fault conditions. A detailed comparison between the three control techniques is presented to outline the main differences between the three control procedures and identify the most appropriate technique in between.

Fuzzy logic-based direct torque control for improvement of the fault-tolerant drive of a five-phase induction motor

2021 ◽  
pp. 014233122110155
Author(s):  
Umakanta Mahanta ◽  
Bhabesh Chandra Mohanta ◽  
Anup Kumar Panda ◽  
Bibhu Prasad Panigrahi
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Cost Effective ◽  
Torque Ripple ◽  
Torque Control ◽  
Open Phase ◽  
Ripple Reduction ◽  
Multi Phase

Torque ripple reduction is one of the major challenges in switching table-based direct torque control (DTC) while operating for open phase faults of an induction motor, as the switching vectors are unevenly distributed. This can be minimized by increasing the level of the inverter and with the use of multi-phase motors. Fuzzy logic-based DTC is another solution to the above problem. In this paper, a comparative analysis is done between switching table-based DTC (ST-DTC) and fuzzy logic-based DTC for increasing the performance during open phase faults of a five-phase induction motor. The result shows that in fuzzy logic-based DTC with a two-level inverter, the torque ripple is reduced by 5.164% as compared with ST-DTC with a three-level inverter. The fuzzy logic-based DTC with the three-level inverter also gives better performance as compared with fuzzy logic-based DTC with the two-level inverter. The current ripple also reduced by 9.605% with respect to ST-DTC. Thus, fuzzy logic-based DTC is more suitable and cost effective for open phase fault-tolerant drives.

scholarly journals Switching Sequence Model Predictive Direct Torque Control of IPMSMs for EVs in Switch Open-Circuit Fault-Tolerant Mode

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5593
Author(s):  
Ting Yang ◽  
Takahiro Kawaguchi ◽  
Seiji Hashimoto ◽  
Wei Jiang
Keyword(s):  
Fault Tolerant ◽  
Direct Torque Control ◽  
Open Circuit ◽  
Torque Control ◽  
Flux Linkage ◽  
Switching Sequence ◽  
Space Vectors ◽  
Stator Flux ◽  
Maximum Torque Per Ampere ◽  
Capacitor Voltage Balance

A switching sequence model predictive direct torque control (MPDTC) of IPMSMs for EVs in switch open-circuit fault-tolerant mode is studied in this paper. Instead of selecting one space vector from the possible four space vectors, the proposed MPDTC method selects an optimized switching sequence from two well-designed switching sequences, including three space vectors, according to a new designed cost function of which the control objectives have been transferred to the dq-axes components of the stator flux-linkage under the maximum-torque-per-ampere control. The calculation method of the durations of the adopted space vectors in the optimized switching sequence is studied to realize the stator flux-linkage reference tracking. In addition, the capacitor voltage balance method, by injecting a dc offset to the current of fault phase, is given. Compared with the conventional MPDTC method, the complicated weighting factors designing process is avoided and the electromagnetic torque ripples can be greatly suppressed. The experimental results prove the effectiveness and advantages of the proposed scheme.

Direct-Torque-Control Fault-Tolerant Strategies for Three Induction Motor Drive Systems Operating Under Single-Phase Open-Circuit Fault

2020 ◽  
Author(s):  
Pedro H. M. Martins ◽  
Victor F. M. B. Melo ◽  
Gilielson F. da Paz ◽  
Isaac S. de Freitas
Keyword(s):  
Induction Motor ◽  
Single Phase ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Open Circuit ◽  
Torque Control ◽  
Necessary Condition ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Drive Systems

This paper discusses Direct-torque-control(DTC)-based fault-tolerance strategiesapplied to three fault-tolerant induction motor drive systems when they operate under single-phase open-circuit fault. Despite the fact that these drive systems have already been discussed in the literature, the reported papers always make use of Field-oriented-control(FOC)-based fault compensation strategies. In this way, performed simulations show that DTC-based strategies are feasible and are able to provide circular flux trajectory, which is the necessary condition for the motor operate properly.

scholarly journals Advances in Dual-Three-Phase Permanent Magnet Synchronous Machines and Control Techniques

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7508
Author(s):  
Ziqiang Zhu ◽  
Shensheng Wang ◽  
Bo Shao ◽  
Luocheng Yan ◽  
Peilin Xu ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Worked Examples ◽  
Torque Control ◽  
Electrical Machines ◽  
Synchronous Machines ◽  
Permanent Magnet Synchronous Machines ◽  
Control Techniques ◽  
Three Phase

Multiphase electrical machines are advantageous for many industrial applications that require a high power rating, smooth torque, power/torque sharing capability, and fault-tolerant capability, compared with conventional single three-phase electrical machines. Consequently, a significant number of studies of multiphase machines has been published in recent years. This paper presents an overview of the recent advances in multiphase permanent magnet synchronous machines (PMSMs) and drive control techniques, with a focus on dual-three-phase PMSMs. It includes an extensive overview of the machine topologies, as well as their modelling methods, pulse-width-modulation techniques, field-oriented control, direct torque control, model predictive control, sensorless control, and fault-tolerant control, together with the newest control strategies for suppressing current harmonics and torque ripples, as well as carrier phase shift techniques, all with worked examples.

scholarly journals Open-Phase Fault-Tolerant Direct Torque Control Technique for Five-Phase Induction Motor Drives

2017 ◽  
Vol 64 (2) ◽  
pp. 902-911 ◽  
Author(s):  
Mario Bermudez ◽  
Ignacio Gonzalez-Prieto ◽  
Federico Barrero ◽  
Hugo Guzman ◽  
Mario J. Duran ◽  
...  
Keyword(s):  
Induction Motor ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Motor Drives ◽  
Torque Control ◽  
Control Technique ◽  
Induction Motor Drives ◽  
Open Phase

scholarly journals An Experimental Assessment of Open-Phase Fault-Tolerant Virtual-Vector-Based Direct Torque Control in Five-Phase Induction Motor Drives

2018 ◽  
Vol 33 (3) ◽  
pp. 2774-2784 ◽  
Author(s):  
Mario Bermudez ◽  
Ignacio Gonzalez-Prieto ◽  
Federico Barrero ◽  
Hugo Guzman ◽  
Xavier Kestelyn ◽  
...  
Keyword(s):  
Induction Motor ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Motor Drives ◽  
Torque Control ◽  
Induction Motor Drives ◽  
Experimental Assessment ◽  
Open Phase
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