Asymmetric dual winding three‐phase PMSM for fault tolerance of overheat in electric braking system of autonomous vehicle

Hwang, Kyu-Yun; Song, Baik Kee; Kwon, Byung-il

doi:10.1049/iet-epa.2018.5973

Cited by 17 publications

(8 citation statements)

References 29 publications

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“…In the stator, the flow enters and leaves the slots in a tangential direction, and in the stator slots, the conductors are accommodated where the electric potential is applied [32]. Figure 2 shows a cut rectangular approximation of the slot, in which the teeth of the stator slot can also be seen.…”

Section: Machine Geometrymentioning

confidence: 99%

Electric Field Evaluation Using the Finite Element Method and Proxy Models for the Design of Stator Slots in a Permanent Magnet Synchronous Motor

et al. 2020

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The efficiency of electric motors is being improved every day and projects with design variations can improve their performance. Among electric motors, the Permanent Magnet Synchronous Machine (PMSM) is being increasingly used, because of its growing use in electric vehicles. Simulating design variations using the Finite Element Method (FEM) can improve PMSM design, and by optimizing the parameters based on the FEM, even better results can be achieved. The design of the PMSM stator slots must be evaluated, as conductors are accommodated and an electrical potential is applied at this location. The FEM parameters are varied, and the results can be used to build an approximate model, known as a proxy model. The proxy model can then be used in a mathematical programming problem to optimize the design of stators that have less electric field in certain regions, thus reducing the chance of developing a failure. The results of the proposed methodology show that its application is promising for machine design and can also be used for the design of other systems.

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Section: Machine Geometrymentioning

confidence: 99%

Electric Field Evaluation Using the Finite Element Method and Proxy Models for the Design of Stator Slots in a Permanent Magnet Synchronous Motor

et al. 2020

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“…First, the target-rated current value of the motor is reselected, as shown in (1), by considering the variation in voltage. Additionally, as shown in (2), the number of turns on the motor increases as the current value decreases in order to produce the same magnetomotive force and torque [23]…”

Section: Conventional Design Of 12-48v Inverter-fed Blac Motor For Iementioning

confidence: 99%

“…First, the target‐rated current value of the motor is reselected, as shown in (1), by considering the variation in voltage. Additionally, as shown in (2), the number of turns on the motor increases as the current value decreases in order to produce the same magnetomotive force and torque [23]

I_{rated_48 V} = I_{rated_12 V} ()(, \frac{VL {normalL}_{12 v}}{VL {normalL}_{48 v}})

N_{48 V} = N_{12 V} \cdot ()(, \frac{I_{rated_12 V}}{I_{rated_48 V}})

where

I_{rated normal_48 V}

and

I_{rated normal_12 V}

is the rated motor current for the 48 and 12 V battery system, respectively;

VL {normalL}_{48 V}

and

VL {normalL}_{12 V}

is the line voltage input to the motor in the 48 and 12 V battery system, respectively;

N_{48 V}

and

N_{12 V}

is the number of turns in series in the 48 and 12 V battery system, respectively.…”

Section: Conventional Design Of 12–48v Inverter‐fed Blac Motor For Iementioning

confidence: 99%

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

Hwang

Kwon

2020

IET Electric Power Applications

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In this study, to maximise the performance and efficiency of 48 V integrated electric brake (IEB) system, a systemlevel optimal design process is proposed for inverter-driven brushless AC (BLAC) motor, taking into account the available input voltage that varies depending on the motor operating conditions. To get available input voltages, the voltage drops of battery wiring and inverter are reversely calculated from the motor output power. In the optimal design process, the resistance components in the inverter are separated into DC and AC parts, and these are analysed by including the dq equivalent circuit for motor analysis. The battery currents are obtained using the calculated maximum output performance and the loss between the battery and inverter. The proposed design process is applied to the optimal design of the 48 V motor for IEB systems. Also, to reduce the development cost of the 48 V motor, the manufacturing tools of the previously developed 12 V motor are shared. As an optimal design results, it is confirmed that there is an efficiency improvement effect of ∼5% compared to the conventional design of 12-48 V BLAC motor.

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“…Therefore, the modular-type machine vibration and noise characteristics need more detailed investigation under post-fault operating conditions. Many scholars have researched the noise and vibration characteristics of an electric machine, and they have declared electromagnetic forces as the leading cause of vibration and noise in an electrical machine [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The detailed calculation of the electromagnet forces using a finite-element analysis is investigated in Ref.…”

Section: Introductionmentioning

confidence: 99%

Investigation of noise and vibration characteristics of an IPMSM with modular‐type winding arrangements having three‐phase sub‐modules for fault‐tolerant applications

Shah

Wang

Abubakar

et al. 2021

IET Electric Power Appl

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The noise and vibration level in modular‐type permanent magnet synchronous machines with fractional slot concentrated windings (FSCW) is considered to be an important design consideration, particularly for applications requiring fault tolerance. In this work, an interior permanent magnet synchronous machine (IPMSM) with FSCW is designed in a modular manner by dividing its stator windings into different arrangements having independent three‐phase sub‐modules with separate neutral points. First, the modular concentrated winding arrangement is studied to investigate the radial forces, vibration, and the associated noise level in the prototype machine having three‐phase sub‐modules under open‐circuit fault conditions. Then, another type of distributed three‐phase sub‐module winding arrangement is analysed to further investigate the vibration and noise level in the same prototype machine under the same operating conditions. A detailed two‐dimensional (2D) fast Fourier transform analysis is performed to investigate and compare the machine radial forces, induced harmonics, and sub‐harmonics for the two analysed winding arrangements. Considering the advantages and disadvantages of both the winding arrangements, the third type of mixed concentrated and distributed three‐phase sub‐modules winding arrangement is introduced in this work, combining the first two winding design approaches. A comprehensive harmonic (3D) structure, along with the vibration and noise analysis, is performed using a multi‐physics model analysis for all the winding arrangements under different three‐phase sub‐modules open‐circuit fault conditions. Lastly, the vibration levels of all the machine prototype models under different winding arrangements are experimentally validated. Moreover, the different modular types of winding arrangements are deeply investigated in this work to suggest the best winding arrangement approach that enables the machine to work in a wide range of applications requiring lower power levels or under critical, faulty, and hostile conditions. The proposed winding arrangement has reduced stator deformation with a reduced vibration and noise level under three‐phase sub‐modules open‐circuit fault‐tolerant conditions that can be used according to process requirements.

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Asymmetric dual winding three‐phase PMSM for fault tolerance of overheat in electric braking system of autonomous vehicle

Cited by 17 publications

References 29 publications

Electric Field Evaluation Using the Finite Element Method and Proxy Models for the Design of Stator Slots in a Permanent Magnet Synchronous Motor

Electric Field Evaluation Using the Finite Element Method and Proxy Models for the Design of Stator Slots in a Permanent Magnet Synchronous Motor

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

Investigation of noise and vibration characteristics of an IPMSM with modular‐type winding arrangements having three‐phase sub‐modules for fault‐tolerant applications

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