Modeling and Optimization of Brushless Doubly-Fed Induction Machines Using Computationally Efficient Finite-Element Analysis

Wang, Xuezhou; Strous, Tim D.; Lahaye, Domenico; Polinder, H.; Ferreira, J.A.

doi:10.1109/tia.2016.2593715

Cited by 34 publications

(17 citation statements)

References 19 publications

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“…The consumption of the diesel fuel and the liquid hydrogen is predicted in the OPEX model. The non-dominated sorting genetic algorithm II (NSGA-II) is applied to determine Pareto optimal solutions for this multi-objective problem [36], [26]. It is a well-known evolutionary based algorithm [37].…”

Section: A Optimization Proceduresmentioning

confidence: 99%

Sizing and Control of a Hybrid Ship Propulsion System Using Multi-Objective Double-Layer Optimization

et al. 2021

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Ship hybridization has received some interests recently in order to achieve the emission target by 2050. However, designing and optimizing a hybrid propulsion system is a complicated problem. Sizing components and optimizing energy management control are coupled with each other. This paper applies a nested double-layer optimization architecture to optimize the sizing and energy management of a hybrid offshore support vessel. Three different power sources, namely diesel engines, batteries and fuel cells, are considered which increases the complexity of the optimization problem. The optimal sizing of the components and their corresponding energy management strategies are illustrated. The effects of the operational profiles and the emission reduction targets on the hybridization design are studied for this particular type of vessel. The results prove that a small emission reduction target of about 10% can be achieved by improving the diesel engine efficiency using the batteries only while the achievement of a larger emission reduction target mainly depends on the amount of the hydrogen and/or on-shore charging electricity consumed. Some design guidelines for hybridization are derived for this particular ship which could be also valid for other vessels with similar operational profiles.INDEX TERMS Hybrid, offshore support vessel, sizing, control, energy management.

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Section: A Optimization Proceduresmentioning

confidence: 99%

Sizing and Control of a Hybrid Ship Propulsion System Using Multi-Objective Double-Layer Optimization

et al. 2021

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“… Topological analysis of airgap field modulation phenomenon in BDFMs [26], [60], [61];  Emergence of new or improved machine topologies for higher torque density and/or efficiency [49], [50], [62][63][64];  Modeling and performance analysis taking into account the influence of harmonics, saturation and iron loss [65][66][67][68];  Design optimization considering the multi-port and multi-harmonic feature [58], [69][70][71];  Dynamic modeling and fundamental control, mainly for the cascading type and BDFIM due to their complex construction [72][73][74][75][76][77][78][79][80];  Control strategies and performance evaluation in stand-alone [81][82][83] and grid-connected wind power scenarios, especially on low-voltage ride-through (LVRT) [84][85][86], unbalanced or grid-fault conditions [57], [87], [88], etc.…”

Section: Bdfmmentioning

confidence: 99%

Emerging Multiport Electrical Machines and Systems: Past Developments, Current Challenges, and Future Prospects

Cheng

Han

Buja

et al. 2018

IEEE Trans. Ind. Electron.

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Distinct from the conventional machines with only one electrical and one mechanical port, electrical machines featuring multiple electrical/mechanical ports (the so-called multi-port electrical machines) provide a compact, flexible, and highly-efficient manner to convert and/or transfer energies among different ports. This paper attempts to make a comprehensive overview of existing multi-port topologies, from fundamental characteristics to advanced modeling, analysis, and control, with particular emphasis on the extensively investigated brushless doubly-fed machines for highly-reliable wind turbines and power split devices for hybrid electric vehicles. A qualitative review approach is mainly adopted but strong efforts are also made to quantitatively highlight the electromagnetic and control performance. Research challenges are identified and future trends are discussed.

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“…According to (14), the frequencies of the induced currents due to the PW and the CW are +f p + vp p f m and +f c + vp c f m , respectively. It indicates that the cross-coupling takes place when the current induced by the fundamental component of the PW magnetic field (v = 1) has the same frequency as the current induced by the fundamental component of the CW magnetic field (v = 1) [28]. Then the synchronous mechanical speed f m can be derived as…”

Section: Induced Rotor Space-harmonics and Time-harmonicsmentioning

confidence: 99%

“…According to (14), the frequencies of the induced currents due to the PW and the CW are

\mp f_{p} + v p_{p} f_{m}

and

\mp f_{c} + v p_{c} f_{m}

, respectively. It indicates that the cross‐coupling takes place when the current induced by the fundamental component of the PW magnetic field (

v = 1

) has the same frequency as the current induced by the fundamental component of the CW magnetic field (

v = 1

) [28]. Then the synchronous mechanical speed

f_{m}

can be derived as

\begin{matrix} right leftthickmathspace.5em \\ - f_{normalp} + p_{normalp} f_{normalm} & = - (f_{normalc} + p_{normalc} f_{normalm}), \\ \Rightarrow & f_{normalm} = \frac{f_{normalp} + f_{normalc}}{p_{normalp} + p_{normalc}} . \end{matrix}

The stator magnetic fields and the induced rotor fields have been analytically derived in this section.…”

Section: Harmonics In Brushless Dfimsmentioning

confidence: 99%

Computationally efficient calculation of skew effects in brushless doubly‐fed induction machines

Wang

Strous

Lahaye

et al. 2017

IET Electric Power Applications

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Brushless doubly-fed induction machines (DFIMs) have great potential as variable-speed generators in wind turbines. Undesired space-harmonics exist because the special rotor needs to couple to two stator windings with different pole-pair numbers and different frequencies. These undesired space-harmonics could lead to noise, vibrations and low power quality. Applying skewed slots can overcome the above drawbacks. Previously, a two-dimensional (2D) multi-slice finite element (FE) method was applied to study the effects of skew which was time consuming. In the stage of initial design, it is not efficient to use such a model to predict how much the average torque and the torque ripple would be reduced by skewing slots. This study makes use of normal 2D FE results and applies skew factors in postprocessing to investigate the influence of rotor skew. It also proves that to apply skew factors appropriately, not only the space-harmonic order needs to be considered, but also the time-harmonic order. The proposed method can give an approximate prediction of skew effects with limited computing time. The results also indicate that skewing the rotor slot over one stator slot pitch could be a good choice to minimise the torque ripple in a brushless DFIM with a nestedloop rotor.

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Modeling and Optimization of Brushless Doubly-Fed Induction Machines Using Computationally Efficient Finite-Element Analysis

Cited by 34 publications

References 19 publications

Sizing and Control of a Hybrid Ship Propulsion System Using Multi-Objective Double-Layer Optimization

Sizing and Control of a Hybrid Ship Propulsion System Using Multi-Objective Double-Layer Optimization

Emerging Multiport Electrical Machines and Systems: Past Developments, Current Challenges, and Future Prospects

Computationally efficient calculation of skew effects in brushless doubly‐fed induction machines

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