Medium voltage current source converter drives for marine propulsion system using a dual-winding synchronous machine

Dai, Jingya; Nam, Seunghoon; Pande, Manish; Esmaeili, Ghodrat

doi:10.1109/ecce.2013.6646674

Cited by 7 publications

(14 citation statements)

References 8 publications

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“…This approach, commonly employed in modeling multiphase machines, allows to simplify the analysis to a reduced number of field harmonics (i.e., current space vectors). Each current space vector, determined by (2), is built as a sum of the phase currents multiplied by a unit vector that is rotated according to the order of the space (ρ th ) and the angular position of the magnetic axis of each phase. As an example, Fig.2(a) illustrates the machine geometry of a triple three-phase MSPM machine, highlighting the phases of the different sectors with different colors, and the coils of the three phases of the same sector with different shades of the same color.…”

Section: Torque and Radial Force Equationsmentioning

confidence: 99%

“…The main harmonics of the stator magnetomotive force, responsible for the torque and force production, must be identified to properly select the related current space vectors in (2). For an isotropic permanent magnet rotor with p pole pairs, it is well known that the torque is mainly generated by the p th harmonic of the stator magnetomotive force, and more precisely to the quadrature component of the p th current space vector in the rotor reference frame ( ̅ − = , + , ).…”

Section: Torque and Radial Force Equationsmentioning

confidence: 99%

“…This insulation permits to independently supply each sub-winding with a different inverter, allowing to define fault-tolerant and power-sharing strategies for the control of the overall drive. Therefore, the machine model must be extended accordingly by defining a link between the modular three-phase and the multiphase quantities, i.e., between the transformations (1) and (2). The link can be determined by introducing the new constants…”

Section: Torque and Radial Force Equationsmentioning

confidence: 99%

“…The current space vectors of the considered triple threephase machine can be defined from the more general equation (2) as follows:…”

Section: B Radial Force Control In a Triple-three-phase Multi-sectormentioning

confidence: 99%

See 3 more Smart Citations

Power-Sharing Control in Bearingless Multi-Sector and Multi-Three-Phase Permanent Magnet Machines

Sala

Valente

Nardo

et al. 2021

IEEE Trans. Ind. Electron.

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This paper deals with the power-sharing control of bearingless multi-sector and multi-three-phase permanent magnet machines. The proposed control strategy allows to distribute the power flows among the three-phase inverters supplying the machine during bearingless operation of the drive. The control technique is based on the extension of the vector space decomposition modeling approach. The components producing the electromagnetic torque, i.e. the q-axis currents, are controlled independently from the d-axis ones, also with the aim of managing the power flows among the three-phase systems. Conversely, the d-axis currents are exploited for the generation of the radial forces needed to levitate the rotor, while considering the compensation of the forces caused by the q-axis currents in case of unbalanced power sharing strategy. The validity of the proposed method is confirmed by simulations and experimental tests on a prototyped bearingless multisector permanent magnet synchronous machine. The proposed approach is a contribution to the development of advanced control systems employing multiphase drives in the field of bearingless and multiport applications. Index Terms-Bearingless machines, force control, machine vector control, magnetic levitation, multiphase drives, permanent magnet machines, power-sharing, variable speed drives. NOMENCLATURE Pole pair number. Subscript used to identify the sub-windings under the same P th sector (= 1,2, … ,). Number of three-phase star connected windings located under each pole pair (sector). T Subscript used to distinguish the sub-windings under the same P th sector (= 1,2, … ,). ̅ , Current space vector of each T th three-phase sub-winding under the P th sector.

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Section: Torque and Radial Force Equationsmentioning

confidence: 99%

Section: Torque and Radial Force Equationsmentioning

confidence: 99%

Section: Torque and Radial Force Equationsmentioning

confidence: 99%

“…The current space vectors of the considered triple threephase machine can be defined from the more general equation (2) as follows:…”

Section: B Radial Force Control In a Triple-three-phase Multi-sectormentioning

confidence: 99%

See 2 more Smart Citations

Power-Sharing Control in Bearingless Multi-Sector and Multi-Three-Phase Permanent Magnet Machines

Sala

Valente

Nardo

et al. 2021

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

show abstract

“…However, due to the low back EMF at zero speed and low speed of the main propulsion motor [8], it is difficult to accurately estimate the rotor position by using the observer based on back EMF. e highfrequency signal injection method uses the nonideal characteristics of the motor to estimate the rotor position information [9,10], and it does not involve physical quantities constrained by speed, such as back EMF, which also has good performance at zero speed and low speed.…”

Section: Introductionmentioning

confidence: 99%

Research on Application of High-Frequency Pulse Vibration in Ship Electric Propulsion System

Yan

Guangyin

Zhang

2022

Mathematical Problems in Engineering

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Aiming at the problems existing in the method of using sensors to detect the rotor position of marine main propulsion motor at low speed, a sensorless rotor position identification method based on high-frequency pulse vibration signal is proposed. In this method, the low-pass filter is used to separate the high-frequency signal component, and the current component of d-axis to q-axis is demodulated. The control mode of PI action law is used to phase-locked processing of the demodulated signal, in which purpose is to obtain the rotor position signal. The design method is simulated and verified by MATLAB/Simulink software. The error between the estimated position and the actual position of the rotor in the simulation waveform is small, and the accuracy is high. The simulation results show that this method can achieve good results when applied to the ship electric propulsion system without position sensor, which provides a theoretical reference for the design of marine main propulsion motor control system.

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A novel lookup table based model predictive torque control strategy using matrix converter suitable for permanent magnet synchronous motor fed marine electric propulsion drives

Anunciya

Sivaprakasam

2022

Optim Control Appl Methods

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Matrix converter (MC), an embryonic stage AC-AC converter with dynamic potentialities which is well suitable for the efficient propulsion and better maneuverability of marine vehicles with ensured power quality. The increased number of voltage vectors in MC facilitates a vibrant control over the propulsion motor and also the compactness in MC structure is a desirable aspect. The MC fed finite control set-model predictive control (FCS-MPC) is an attractive and effective modern concept of motor control. However, the industrial implementation of MC fed FCS-MPC is immature due to its necessity of powerful and expensive processors, as it employs more prediction voltage vectors which correspondingly increase the execution duration of the control algorithm. Hence, this paper presents an efficient 12 sector based lookup table for the optimization and reduction of prediction voltage vectors in the FCS-MPC without complicating the computation processing, which is suitable for the permanent magnet synchronous motor drive embedded in the marine propulsion unit. The effectiveness of the proposed algorithm is analyzed using the MATLAB environment and its steady state, dynamic and transient performances are investigated and validated using the real time OPAL RT lab system in comparison to the conventional methods. The significant idea behind this article is to propose a superior MC fed FCS-MPC concept for the marine propulsion motors with diminished torque and flux ripples, which can be easily implemented with economically feasible processors.

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Medium voltage current source converter drives for marine propulsion system using a dual-winding synchronous machine

Cited by 7 publications

References 8 publications

Power-Sharing Control in Bearingless Multi-Sector and Multi-Three-Phase Permanent Magnet Machines

Power-Sharing Control in Bearingless Multi-Sector and Multi-Three-Phase Permanent Magnet Machines

Research on Application of High-Frequency Pulse Vibration in Ship Electric Propulsion System

A novel lookup table based model predictive torque control strategy using matrix converter suitable for permanent magnet synchronous motor fed marine electric propulsion drives

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