A Novel Triple Quadrature Pad for Inductive Power Transfer Systems for Electric Vehicle Charging

Jamakani, Bita Esmaeili; Afjei, E.; Mosallanejad, Ali

doi:10.1109/pedstc.2019.8697654

Cited by 16 publications

(10 citation statements)

References 16 publications

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“…Figure 6(a) presents a comparison of the transmitter coil loss with respect to receiver misalignment for an output power of

P_{o} = 3.3 kW

. As stated in the previous research work [21], this three‐phase transmitter design can be driven by adopting the single‐coil mode (SCM), double‐coil mode (DCM) and three‐coil mode (TCM). SCM utilizes the middle coil from 0 cm to 10 cm and the right coil from 10 cm to 20 cm x ‐axis misalignment towards the right‐hand side of the transmitter.…”

Section: Transmitter Design and Excitation Methods Verificationmentioning

confidence: 99%

“…Jamakani et al. [21] compared a triple quadrature pad with the bipolar pad to demonstrate the improvement in receiver lateral misalignment tolerance. In general, a multi‐phase transmitter can improve the receiver misalignment tolerance of the charging system.…”

Section: Introductionmentioning

confidence: 99%

“…Song et al [20] utilized the magnetic coupling among two three-phase pads to compensate for the power variation under receiver misalignment. Jamakani et al [21] compared a triple quadrature pad with the bipolar pad to demonstrate the improvement in receiver lateral misalignment tolerance. In general, a multi-phase transmitter can improve the receiver misalignment tolerance of the charging system.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Field orientation based three‐coil decoupled wireless transmitter for electric vehicle charging with large lateral receiver misalignment tolerance

Nie

Pathmanathan

Yakop

et al. 2021

IET Power Electronics

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A three-coil decoupled transmitter is developed for the inductive power transfer system of electric vehicle charging. The three-coil decoupled transmitter consists of three overlapping rectangular coils with magnetic mutual decoupling and is capable of overcoming large receiver lateral misalignment up to 20 cm. A current optimization method is advanced to derive transmitter coil currents for the multi-phase system that minimizes the coil loss through optimizing the current distribution among transmitter coils. The optimized current distribution reduces the maximum leakage flux by around 40% compared to the best alternative excitation method. The compensation strategy provides unity power factor for high-power transfer phases and allows a single set of compensation capacitors to be used regardless of receiver alignment. The three-coil decoupled transmitter is compatible with a typical three-phase inverter for industrial practical application, which halves the power electronic switches used with previous topologies. The simulation verification is performed at 3.3 kW, achieving 93.76% efficiency at perfect alignment and 92.54% efficiency at 20 cm misalignment. The experimental verification is implemented at 3.3 kW with 200 mm ground clearance, realizing a 92.97% efficiency at perfect alignment and 90.57% efficiency at 20 cm misalignment. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Figure 6(a) presents a comparison of the transmitter coil loss with respect to receiver misalignment for an output power of

P_{o} = 3.3 kW

Section: Transmitter Design and Excitation Methods Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Field orientation based three‐coil decoupled wireless transmitter for electric vehicle charging with large lateral receiver misalignment tolerance

Nie

Pathmanathan

Yakop

et al. 2021

IET Power Electronics

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“…Therefore, in the following article, a recently proposed pad called triple quadrature pad (TQP) consisting of three coils as a transmitter pad has been investigated not only to provide additional magnetic features but also to overcome the previously mentioned drawbacks [36]. Its advantages over TPP and other IPT pads in papers can be stratified as (1) application of two independent inverters instead of three to control transmitter coils according to two main excitation modes (2) total dimension of pad and coils being 27.6% smaller than TPP, while magnetic performance of the IPT system such as coupling coefficient and tolerance to misalignment are improved and (3) higher coupling coefficient in lower displacements in X and Y ‐axis compared to TPP.…”

Section: Introductionmentioning

confidence: 99%

Investigation of triple quadrature pad for wireless power transfer system of electric vehicles

Jamakani

Mosallanejad

Afjei

et al. 2021

IET Electrical Syst in Trans

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Inductive Power Transfer (IPT) system is an appealing approach among researchers as well as industrial manufacturers of electric vehicle (EV) charging systems. IPT can be used to transfer power through the air gap by generating a high-frequency current in the transmitter pad and inducing current magnetically in the receiver pad. A triple quadrature pad (TQP) has been proposed to enhance transferred power in larger misalignments and various air gaps. This pad excels in its previous three-coil structures by implementing a fewer number of inverters and lower dimensions compared to other similar structures. All these features result in a higher coupling coefficient in low misalignments and higher tolerance to misalignment in horizontal displacements. A laboratory-scale prototype has been designed and built for 26 kHz switching frequency and 150 mm air gap in order to deliver maximum power in different displacements. Simulations have been done by the finite element analysis (FEA) tool of ANSYS Maxwell. The prototype has been built to validate the simulation results. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…As the preferred approach for increasing misalignment tolerance, a large variety of magnetic couplers are proposed, such as double-D pad, double-D-quadrature (DDQΨ pad, bipolar pad, tripolar pad, triple-quadrature pad, quadrature-D-quadrature pad, and coil arrays [9][10][11][12][13][14][15]. Relatively uniform magnetic field distributions are successfully shaped, mitigating the reduction in coupling coefficients between the couplers with misalignment.…”

Section: Introductionmentioning

confidence: 99%

Misalignment‐tolerant integrated IPT systems for tram logistics robots featuring dual‐purpose coupler

Wang

Tao

et al. 2020

IET Electric Power Applications

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This study proposes a misalignment‐tolerant integrated inductive power transfer (IPT) system for tram logistics robots and presents an adapted parameter tuning method for the IPT system. A novel dual‐purpose coupler, which could undertake the responsibility of power transmission and self‐compensation is realised by substituted partially with compensation inductors of inductor–capacitor–capacitor networks, resulting in an integrated and cost‐effective system configuration. With the analysis of working principles on the IPT system and considerations of operation conditions on logistics robots, an adapted parameter tuning method is provided to maximise system misalignment tolerance and maintain high efficiency of power transfer. To demonstrate the validity and safety of the proposed system, comparative simulations and security evaluations are conducted by finite element analysis. Besides, the constant‐current output characteristic is simulated and proved. Finally, a 60.20 W experimental prototype is built. Results show that the system can operate stably with 87.31% efficiency at well‐aligned cases and the power fluctuation is confined below 9% within −120 to 120 mm x ‐misalignment, −80 to 80 mm y ‐misalignment, −50 to 12.5 mm z ‐misalignment, and −30° to 30° rotatory misalignment. It is also verified that the system could operate safely without any secondary side.

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A Novel Triple Quadrature Pad for Inductive Power Transfer Systems for Electric Vehicle Charging

Cited by 16 publications

References 16 publications

Field orientation based three‐coil decoupled wireless transmitter for electric vehicle charging with large lateral receiver misalignment tolerance

Field orientation based three‐coil decoupled wireless transmitter for electric vehicle charging with large lateral receiver misalignment tolerance

Investigation of triple quadrature pad for wireless power transfer system of electric vehicles

Misalignment‐tolerant integrated IPT systems for tram logistics robots featuring dual‐purpose coupler

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