Optimal Sizing of Traction Motors Using Scalable Electric Machine Model

Ramakrishnan, Kesavan; Stipetić, Stjepan; Gobbi, Massimiliano; Mastinu, Giampiero

doi:10.1109/tte.2017.2750488

Cited by 44 publications

(10 citation statements)

References 24 publications

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“…For automotive applications, a vehicle is considered as a rigid body with only one axis affected by the forces that intervene in the system. Figure shows the forces acting on a vehicle moving up a grade …”

Section: Analysis Of Fluctuating Voltage Topologymentioning

confidence: 99%

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Evaluation of fluctuating voltage topology with fuel cells and supercapacitors for automotive applications

Xun

Liu

2019

Int J Energy Res

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Summary To develop a single‐stage power conversion topology in which energy storage devices can be directly coupled, a fluctuating voltage topology is applied, leading to lower cost and more compactness with the absence of DC/DC converters. This paper investigates such a topology for automotive applications where fuel cells are directly connected to the DC bus of the inverter, resulting in fluctuating voltage across the DC bus. Further, a supercapacitor pack is also introduced to maintain the power capacity and voltage stability. The hybridization principle and practical application of such a topology are then discussed in the time domain and frequency domain. Furthermore, the transient power requirement is decomposed to design the size of fuel cells and supercapacitors. Simulation results from the modeling of the fuel cell‐supercapacitor powertrain demonstrate the feasibility and effectiveness of this topology. The supercapacitors can serve as a low‐pass filter for the fuel cells. In conclusion, the peak power requirement can be successfully achieved because of the lowered system impedance, and the fuel cells only need to supply the average power.

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Section: Analysis Of Fluctuating Voltage Topologymentioning

confidence: 99%

“…Figure 11 shows the forces acting on a vehicle moving up a grade. 28 According to Newton's second law of motion, the wheel force can be written as follows: Then, the power demand during motion, including the transmission losses, can be obtained using the following:…”

Section: Transient Power Decompositionmentioning

confidence: 99%

Evaluation of fluctuating voltage topology with fuel cells and supercapacitors for automotive applications

Xun

Liu

2019

Int J Energy Res

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“…Scalable control has recently been developed to scale the efficiency map of a PMSM [14], [22]. In these papers, MTPA and FW algorithms in fmincon functions (nonlinear solver in Matlab R ) are used to determine the optimal currents of the scaled machine based on the reference machine and its LUTs.…”

Section: Scalable Optimal Controlmentioning

confidence: 99%

“…However, the method developed in this paper will most likely be used to optimize the drivetrain of a Hybrid Electrical Vehicle (HEV) equipped with an EVT. Similar optimization routines based on scaling laws developed for electrical vehicles with PMSM have already shown a great potential [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Sizing Methodology Based on Scaling Laws for a Permanent Magnet Electrical Variable Transmission

Verbelen

Abdallh

Vansompel

et al. 2020

IEEE Trans. Ind. Electron.

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This paper discusses a method to design an electrical variable transmission of which the stator and inner rotor contain a distributed three-phase winding, and the outer rotor is equipped with permanent magnets and a DC-field winding. The main problem with the design of electrical variable transmissions is that the modeling relies on time-consuming finite element calculations. Studying the effect of design changes is, therefore, a cumbersome task. To minimize the need for finite element calculations, scaling laws are applied, which reduce the computational effort to a matter of milliseconds per design. Therefore, the losses of multiple scaled designs can be analyzed for a given load cycle while taking constraints into account such as maximum torque. By presenting this data in a performance map, the optimal design regarding the losses is easily deduced. To validate the presented methodology, finite element calculations, measurements and available literature are used.

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“…In order to reduce FEA computation time maintaining its accuracy, different methods are found in the literature that mix initial FEA simulations with different scaling methods to size different machines. In [8,9], dimensional and number of turns scaling techniques are used after a base machine FEA simulation is carried out. This simulation generates magnetic flux, loss, and torque maps that are used to generate other machine models with the mentioned scaling techniques.…”

Section: Introductionmentioning

confidence: 99%

Multi-Physics Tool for Electrical Machine Sizing

et al. 2020

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Society is turning to electrification to reduce air pollution, increasing electric machine demand. For industrial mass production, a detailed design of one machine is usually done first, then a design of similar machines, but different ratings are reached by geometry scaling. This design process may be highly time-consuming, so, in this paper, a new sizing method is proposed to reduce this time, maintaining accuracy. It is based on magnetic flux and thermal maps, both linked with an algorithm so that the sizing process of an electrical machine can be carried out in less than one minute. The magnetic flux maps are obtained by Finite Element Analysis (FEA) and the thermal maps are obtained by analytical models based on Lumped Parameter Circuits (LPC), applying a time-efficient procedure. The proposed methodology is validated in a real case study, sizing 10 different industrial machines. Then, the accuracy of the sizing tool is validated performing the experimental test over the 10 machines. A very good agreement is achieved between the experimental results and the performances calculated by the sizing tools, as the maximum error is around 5%.

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Optimal Sizing of Traction Motors Using Scalable Electric Machine Model

Cited by 44 publications

References 24 publications

Evaluation of fluctuating voltage topology with fuel cells and supercapacitors for automotive applications

Evaluation of fluctuating voltage topology with fuel cells and supercapacitors for automotive applications

Sizing Methodology Based on Scaling Laws for a Permanent Magnet Electrical Variable Transmission

Multi-Physics Tool for Electrical Machine Sizing

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