Multi-Level Open End Windings Multi-Motor Drives

Foti, S.; Testa, A.; De, S.; Scimone, T.; Scelba, G.; Scarcella, G.

doi:10.3390/en12050861

Cited by 20 publications

(9 citation statements)

References 49 publications

(56 reference statements)

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“…However, the TLI is able to compensate a NPC DC-bus capacitor voltage variation ∆V c provided that it is lower than V DC , thus achieving a sinusoidal grid current. The dc-buses of the NPC and auxiliary inverters are isolated between them in order to prevent the circulation of zero-sequence currents [22]. Moreover, the TLI dc-bus is supplied through a floating capacitor; thus, an additional power source is not required.…”

Section: The Proposed MMC Topologymentioning

confidence: 99%

“…A different approach is proposed in this paper, where a particular kind of multipleinput multi-level converter (MMC) is exploited to connect photovoltaic and wind generators to an energy storage system and a three-phase ac grid. It is based on an open-end winding configuration, the asymmetrical hybrid multi-level inverter (AHMLI), whose applications on both motor drives and grid-connected generators are discussed in [22,23] and which has also been successfully exploited to reduce the overvoltage caused by long cables in PWM motor drives [24] as well as to realize a high-speed Gen-set [25,26]. In the present HRES application, the AHMLI topology encompasses an open-end winding three-phase transformer (OWT) whose primary winding operates in an open-end configuration.…”

Section: Introductionmentioning

confidence: 99%

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Multi-Level Multi-Input Converter for Hybrid Renewable Energy Generators

Foti

Testa

et al. 2021

Energies

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A three-phase multi-level multi-input power converter topology is presented for grid-connected applications. It encompasses a three-phase transformer that is operated on the primary side in an open-end winding configuration. Thus, the primary winding is supplied on one side by a three-phase N-level neutral point clamped inverter and, on the other side, by an auxiliary two-level inverter. A key feature of the proposed approach is that the N-level inverter is able to perform independent management of N-1 input power sources, thus avoiding the need for additional dc/dc power converters in hybrid multi-source systems. Moreover, it can manage an energy storage system connected to the dc-bus of the two-level inverter. The N-level inverter operates at a low switching frequency and can be equipped with very low on-state voltage drop Insulated-Gate Bipolar Transistor (IGBT) devices, while the auxiliary inverter is instead operated at low voltage according to a conventional high-frequency two-level Pulse Width Modulation (PWM) technique and can be equipped with very low on-state resistance Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) devices. Simulations and experimental results confirm the effectiveness of the proposed approach and its good performance in terms of grid current harmonic content and overall efficiency.

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Section: The Proposed MMC Topologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi-Level Multi-Input Converter for Hybrid Renewable Energy Generators

Foti

Testa

et al. 2021

Energies

Self Cite

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“…At the same time, the DSIM offers, in addition to the advantages of induction machines, advantages of multiphase machines, which have been aforementioned. In order to improve the service quality of the DSIM and ensure its control in different industrial applications with higher reliability, the DSIM has been used with the new topology that requires the opening of both stator windings; thus, the machine is no longer a DSIM but it is a dual open-end winding induction machine (DOEWIM) [7][8][9][10]. Under this new configuration, it is necessary to control the machine with four three-phase voltage systems, with phase shifts well-calculated between them so that we can eliminate the common-mode voltage and rid of its several issues, such as the bearing currents and shaft voltages, which leads to rapid failures of machine bearings and shafts [7,8,[11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Improved DTC-SVM Based on Input-Output Feedback Linearization Technique Applied on DOEWIM Powered by Two Dual Indirect Matrix Converters

et al. 2021

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This paper focuses on the application of the direct torque control based on space vector modulation (DTC-SVM), combined with the input–output feedback linearization (IOFL) technique on a three-phase dual open-end windings induction motor (DOEWIM) fed by two dual indirect matrix converters. The main aim of integrating the non-linear technique is to overcome the main drawbacks met within the application of the conventional DTC-SVM on dual-stator induction motor (DSIM), such as the torque and flux ripples reduction, the stator harmonics current minimization, and the elimination of the common-mode voltage (CMV). Furthermore, it is proved in this paper that the proposed control on DOEWIN can ensure more flexibility versus speed reverse and variation, load torque changes, and motor parameters variation. The obtained results prove the validity of the proposed control on the studied induction motor topology in ensuring the main aforementioned advantages compared to the conventional DTC-SVM control on DSIM, which presents a promising solution, especially in industrial applications in which high-power motors are required.

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“…First, an open-ended winding structure is applied to a squirrel cage induction motor (IM) or a permanent magnet motor to connect two inverters at both ends [1][2][3][4][5]. Since the stator phase voltage is determined by the difference between the output voltages of both inverters, the applicable phase voltage increases, and the high-speed operation range is expanded.…”

Section: Introductionmentioning

confidence: 99%

Fast Flux and Torque Control of a Double Inverter-Fed Wound Machine Considering All Coupling Interferences

Han

2021

Electronics

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For efficient operation of the squirrel cage induction motor, the flux must be properly adjusted according to the torque. However, in such variable flux operation, the performance of torque control is limited by the flux control because it is not possible to measure and control the rotor current that affects the flux. On the contrary, in a double inverter-fed wound machine (DIFWM), the inverter is connected to the rotor side, as well as the stator side, and the rotor current can be controlled. This controllability of the rotor currents improves the operation performance of a DIFWM. This article presents the decoupling current control method of a DIFWM for fast flux and torque control. Since the rotor flux is directly calculated by the stator and rotor currents, the bandwidth of the flux control can be improved to the bandwidth of the current controller, which means that the torque control also has the same bandwidth. In this article, a detailed current controller design method with a DIFWM feed-forwarding decoupling method to eliminate all coupling interferences is proposed. The simulation and experimental results regarding the DIFWM are presented to verify the torque and flux control performance of the proposed control method.

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Multi-Level Open End Windings Multi-Motor Drives

Cited by 20 publications

References 49 publications

Multi-Level Multi-Input Converter for Hybrid Renewable Energy Generators

Multi-Level Multi-Input Converter for Hybrid Renewable Energy Generators

Improved DTC-SVM Based on Input-Output Feedback Linearization Technique Applied on DOEWIM Powered by Two Dual Indirect Matrix Converters

Fast Flux and Torque Control of a Double Inverter-Fed Wound Machine Considering All Coupling Interferences

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