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Search Results (3)

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Keywords = six-phase induction motor (6PIM)

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6 pages, 1283 KiB  
Proceeding Paper
Symmetrical Six-Phase Induction Motor Stator Faults Diagnostics Approach, Immune to Unbalanced Supply Voltage, Based on the Analysis of the Midpoint Electrical Potential of the Stator Star
by Hugo R. P. Antunes, Davide S. B. Fonseca and Antonio J. Marques Cardoso
Eng. Proc. 2022, 24(1), 22; https://doi.org/10.3390/IECMA2022-12891 - 15 Sep 2022
Cited by 3 | Viewed by 1253
Abstract
The distinction of inter-turn short-circuit faults (ITSCF) from abnormal conditions, such as an unbalanced voltage supply condition, has been challenging over the last few years. The asymmetries caused by both conditions are similar, therefore the detection of ITSCF becomes a difficult task. An [...] Read more.
The distinction of inter-turn short-circuit faults (ITSCF) from abnormal conditions, such as an unbalanced voltage supply condition, has been challenging over the last few years. The asymmetries caused by both conditions are similar, therefore the detection of ITSCF becomes a difficult task. An ITSCF diagnostic approach based on the analysis of the electrical potential of the midpoint of the stator star, in a symmetrical six-phase induction motor (S6PIM) supplied by unbalanced voltages, is addressed in this paper. Simulation results, covering different load torques, unbalanced supply voltage levels, and fault severities, are presented in order to prove the effectiveness of the proposed technique. Full article
(This article belongs to the Proceedings of The 1st International Electronic Conference on Machines and Applications)
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17 pages, 3446 KiB  
Article
A Parallel Estimation System of Stator Resistance and Rotor Speed for Active Disturbance Rejection Control of Six-Phase Induction Motor
by Hamidreza Heidari, Anton Rassõlkin, Mohammad Hosein Holakooie, Toomas Vaimann, Ants Kallaste, Anouar Belahcen and Dmitry V. Lukichev
Energies 2020, 13(5), 1121; https://doi.org/10.3390/en13051121 - 2 Mar 2020
Cited by 14 | Viewed by 3080
Abstract
In this paper, a parallel estimation system of the stator resistance and the rotor speed is proposed in speed sensorless six-phase induction motor (6PIM) drive. First, a full-order observer is presented to provide the stator current and the rotor flux. Then, an adaptive [...] Read more.
In this paper, a parallel estimation system of the stator resistance and the rotor speed is proposed in speed sensorless six-phase induction motor (6PIM) drive. First, a full-order observer is presented to provide the stator current and the rotor flux. Then, an adaptive control law is designed using the Lyapunov stability theorem to estimate the rotor speed. In parallel, a stator resistance identification scheme is proposed using more degrees of freedom of the 6PIM, which is also based on the Lyapunov stability theorem. The main advantage of the proposed method is that the stator resistance adaptation is completely decoupled from the rotor speed estimation algorithm. To increase the robustness of the drive system against external disturbances, noises, and parameter uncertainties, an active disturbance rejection controller (ADRC) is introduced in direct torque control (DTC) of the 6PIM. The experimental results clarify the effectiveness of the proposed approaches. Full article
(This article belongs to the Special Issue Industrial and Technological Applications of Power Electronics Systems)
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14 pages, 3937 KiB  
Article
A Novel Vector Control Strategy for a Six-Phase Induction Motor with Low Torque Ripples and Harmonic Currents
by Hamidreza Heidari, Anton Rassõlkin, Toomas Vaimann, Ants Kallaste, Asghar Taheri, Mohammad Hosein Holakooie and Anouar Belahcen
Energies 2019, 12(6), 1102; https://doi.org/10.3390/en12061102 - 21 Mar 2019
Cited by 29 | Viewed by 4254
Abstract
In this paper, a new vector control strategy is proposed to reduce torque ripples and harmonic currents represented in switching table-based direct torque control (ST-DTC) of a six-phase induction motor (6PIM). For this purpose, a new set of inputs is provided for the [...] Read more.
In this paper, a new vector control strategy is proposed to reduce torque ripples and harmonic currents represented in switching table-based direct torque control (ST-DTC) of a six-phase induction motor (6PIM). For this purpose, a new set of inputs is provided for the switching table (ST). These inputs are based on the decoupled current components in the synchronous reference frame. Indeed, using both field-oriented control (FOC) and direct torque control (DTC) concepts, precise inputs are applied to the ST in order to achieve better steady-state torque response. By applying the duty cycle control strategy, the loss subspace components are eliminated through a suitable selection of virtual voltage vectors. Each virtual voltage vector is based on a combination of a large and a medium vector to make the average volt-seconds in loss subspace near to zero. Therefore, the proposed strategy not only notably reduces the torque ripples, but also suppresses the low frequency current harmonics, simultaneously. Simulation and experimental results clarify the high performance of the proposed scheme. Full article
(This article belongs to the Special Issue Advances in Rotating Electric Machines)
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