IPT design with optimal use of spiral rectangular coils for wireless charging of e-tricycle scooters

Yıldırız, Emin; Kemer, Salih Burak; Bayraktar, Murat

doi:10.1016/j.jestch.2021.101082

Cited by 5 publications

(6 citation statements)

References 15 publications

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“…According to the electromagnetic induction law [ 39 , 40 , 41 , 42 ], the input voltage u i of the transformer A is given by

where N 1 is the turns number of the coil 1, L 1 is the self-inductance of the coil 1, φ 11 is the main flux of the coupler, and i 1 is the current following through the coil 1. Two coils cannot be fully coupled in actuality, and the coupling coefficient k 1 is computed by [ 43 , 44 , 45 , 46 ]

where M is the mutual inductance of the two coils, and L 2 is the self-inductance of the coil 2. The relationship between the changes of the magnetic flux in the two-layer coils is as follows [ 39 , 40 ]:

where φ 12 is the flux of the coil 2, and the voltage u 2 of the coil 2 can be obtained according to the above equation.…”

Section: The Magnetic Coupling Principle For Power Feeding and Data T...mentioning

confidence: 99%

A Novel System for the Measurement of an Evaporation Duct Using the Magnetic Coupling Principle for Power Feeding and Data Transmission

Wang

et al. 2022

Sensors

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Since the evaporation duct height (EDH) only covers the antenna height of most shipborne microwave radars, mastering the EDH in advance has great significance in achieving long-range target detection. In this paper, a set of hydrological and meteorological sensors based on the gradient meteorological instrument (GMI) were built to monitor the evaporation duct of the South China Sea (SCS). However, the monitoring needed to be interrupted during the battery replacement of the sensor, which could result in the loss of some important data collection. On the basis of the inductively coupled power transfer (ICPT) technology, the resonance principle was used to compensate the inductive reactance on the closed steel ring (CSR), and the energy stored in the super capacitor was introduced for data collection and return. A novel measuring system for the detection of an evaporation duct was proposed. To avoid iterative calculation by setting the initial value of the current evaporation duct models in large-scale and multi time evaporation duct prediction and diagnosis, on the basis of the non-iterative air–sea flux (NAF) model, the EDH was obtained by introducing the K theoretical flux observation method into the atmospheric refractive index equation. Finally, preliminary experimental results are presented for the detection of evaporation duct to demonstrate the feasibility and effectiveness of the proposed system. The communication accuracy rate of the proposed system was 99.7%. The system transmission power reached 22.8 W. The research results of the NAF model adaptability showed that the mean value of the EDH was 8.7 m, which was lower than the mean EDH of the SCS. The EDH calculated by the NAF model in the unstable air–sea stratification state was slightly lower than that calculated by the NPS model. The diagnosis of the EDH by the NAF model was similar to that of the NPS model, but the calculation stability of the NAF model was better.

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“…According to the electromagnetic induction law [ 39 , 40 , 41 , 42 ], the input voltage u i of the transformer A is given by

where φ 12 is the flux of the coil 2, and the voltage u 2 of the coil 2 can be obtained according to the above equation.…”

Section: The Magnetic Coupling Principle For Power Feeding and Data T...mentioning

confidence: 99%

A Novel System for the Measurement of an Evaporation Duct Using the Magnetic Coupling Principle for Power Feeding and Data Transmission

Wang

et al. 2022

Sensors

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“…The quality factors are calculated as in Equation (10) for the SS topology. Q P and Q S values are usually chosen to be close to each other and to be Q P > Q S [33,34].…”

Section: Design Of Inductive Power Transfer System For E-bikesmentioning

confidence: 99%

“…The winding designs capable of transmitting the desired power were scanned with an algorithm as in [33], considering the determined design constraints and physical constraints. The self and mutual inductances of the air-core windings were calculated analytically.…”

Section: Design Of Inductive Power Transfer System For E-bikesmentioning

confidence: 99%

Design and Implementation of a Wireless Charging System Connected to the AC Grid for an E-Bike

Yıldırız

Bayraktar²

2022

Energies

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This paper aims to design an IPT for wireless charging of an e-bike and to control the charge of the e-bike from the primary-side. Optimum IPT design has been made according to the 36 V battery bank requirements. The no-load condition test has been performed before charging started in the IPT system connected to the AC grid. The primary-side DC-link voltage of 4–5 V required for this test is provided by the designed forward converter. The charge control has been also made from the forward converter on the primary-side. For this, the forward converter’s operation in peak current mode (PCM) has been used. Finally, a prototype has been implemented that works at a maximum DC/DC efficiency of 87.52% in full alignment and 83.63% in 3 cm misalignment. The proposed control algorithm has been tested in this prototype at different load stages.

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“…To improve the output performance to reduce the energy consumption of the WPT system under misalignment conditions, many methods have been proposed, which can be roughly classified into three categories: (1) variable frequency control [12][13][14][15], (2) optimization on coupling coils [16][17][18][19][20][21][22][23], and (3) regulation on compensation parameters.…”

Section: Introductionmentioning

confidence: 99%

Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System

Diao

Mei

et al. 2023

Electronics

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This paper proposes an active resonant network based on variable resonant capacitances to improve the operating performance of the LCC-S compensated topology in the wireless power transfer (WPT) system for electric vehicles under coil-misaligned conditions. By adjusting the series and parallel compensation capacitances on the transmitting side, the output voltage can be kept constant and the energy transfer efficiency can be improved under different coil offsets. The switch-controlled capacitors (SCCs) are used to change the compensation capacitances continuously. To find the proper compensation capacitances to achieve the excellent performance of the system, the optimization algorithm is applied, and the corresponding digital control strategy is described to regulate the equivalent capacitances of SCCs. Experimental results with a 2.7 kW power scale show that the output voltage is constant, and the operating efficiency is always over 90% in the WPT system with an active resonant network under different misalignment conditions. In addition, the system is delivering an equal amount of energy for all misalignments within the range of 80 mm, which improves the expected value of transferred energy by about 29%.

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IPT design with optimal use of spiral rectangular coils for wireless charging of e-tricycle scooters

Cited by 5 publications

References 15 publications

A Novel System for the Measurement of an Evaporation Duct Using the Magnetic Coupling Principle for Power Feeding and Data Transmission

A Novel System for the Measurement of an Evaporation Duct Using the Magnetic Coupling Principle for Power Feeding and Data Transmission

Design and Implementation of a Wireless Charging System Connected to the AC Grid for an E-Bike

Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System

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