Rectifier Load Analysis for Electric Vehicle Wireless Charging System

Guo, Yanjie; Wang, Lifang; Zhang, Yuwang; Li, Shufan; Liao, Chenglin

doi:10.1109/tie.2018.2793260

Cited by 50 publications

(18 citation statements)

References 28 publications

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“…According to (4), (5), (9), (26), and (28), the values of φ and θ can be calculated by solving the equations in (27) and (30) , (see (30)) , according to the stage of the working process.…”

Section: Z-model Of the Input Impedance Of The Rectifiermentioning

confidence: 99%

“…Step 2: Assume that the rectifier operates at DCM, and calculate φ and θ at x point with (27) and (30). If φ x >0, the rectifier operates at DCM; otherwise the rectifier operates at CCM, and calculate θ at x point with (23).…”

Section: Designing Procedures Of the Double-sided Lcc Networkmentioning

confidence: 99%

“…According to (23) and (30), the values of φ and θ are related with a series of parameters including X p , X s , β, G v and so on. Due to the limit of the dimensions, not all the varying parameters can be studied together about φ and θ.…”

Section: Analysis Of the Input Impedance Of The Rectifiermentioning

confidence: 99%

“…A reactance component of the input impedance of the rectifier of a WPT system is analysed under MHz in [29], and it is found that the amplitude of the reactance increases with the load. The reactance component is calculated in [30], though only the CCM is considered. Reference [31] analysed both the continuous conduction mode (CCM) and DCM of the rectifier, and used a computer simulation to obtain a numerical solution of the compensation network to design a unity-power-factor pickup.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the input impedance of the rectifier and design of LCC compensation network of the dynamic wireless power transfer system

Guo

Chen

et al. 2019

IET Power Electronics

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A design method of line commutated converter (LCC) compensation network for the dynamic wireless power transfer (DWPT) system based on a complex impedance model (Z-model) of the input impedance of the rectifier is proposed in this study. The continuous conduction mode and discontinuous conduction mode (DCM) of the rectifier are analysed to calculate the equivalent input impedance of the rectifier. Based on the proposed model of the input impedance of the rectifier, a design method of LCC compensation network for the DWPT system is presented. Simulation results prove that the Z-model of the rectifier is more accurate than the prevailing resistive model. Experiments show that the DWPT system with the designed LCC network meets the requirement of the average output power with an average DC-DC efficiency over 93%.

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Section: Z-model Of the Input Impedance Of The Rectifiermentioning

confidence: 99%

Section: Designing Procedures Of the Double-sided Lcc Networkmentioning

confidence: 99%

Section: Analysis Of the Input Impedance Of The Rectifiermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of the input impedance of the rectifier and design of LCC compensation network of the dynamic wireless power transfer system

Guo

Chen

et al. 2019

IET Power Electronics

Self Cite

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“…Wireless power transfer (WPT) [1][2][3][4] is an emerging technology that has achieved a great advancement in academia and a deep penetration into the commercial market. Electric vehicle (EV) wireless charging is a typical application of the WPT technology [5,6]. Compared with conductive charging, wireless charging has the advantages of convenience (free from manual operation) [7], safety (free from electric shock and sparks), reliability (free from water and dust), and applicability in harsh environments [8,9].…”

Section: Introductionmentioning

confidence: 99%

Interoperability study of fast wireless charging and normal wireless charging of electric vehicles with a shared receiver

Zhang¹,

Yan

Kan³

et al. 2019

IET power electron.

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Fast charging of electric vehicles (EVs) has been the trend recently. For conductive charging, normal charging can be realised by an on-board charger, while fast charging can be realised by a DC charger which is usually off-board the vehicle. However, for wireless charging, there is a need of a transmitter on the ground and a receiver on the EV side. Therefore, there will be a high-power receiver and a low-power receiver in one EV to achieve dual charging capabilities. To reduce the EV-side cost, weight, and volume, this paper proposes a wireless charging system with a shared receiver compatible of fast wireless charging (FWC) at a small air gap and normal wireless charging (NWC) at a large air gap. The relationship between the coil size and the power level is investigated and a suitable receiver coil size is selected for FWC. The LCC-LCC topology is selected due to its characteristic of output power proportional to the coupling coefficient. Design procedures of the receiver and transmitters are investigated. The simulations and the experimental results obtained from the downscaled prototype verified the effectiveness of the compatibility design.

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Rectifier load modeling and zero voltage switching design of inductive power transfer system with S‐type topology on the secondary side

Shen,

Sun,

Wang

et al. 2024

Circuit Theory & Apps

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SummaryRectifier load in inductive power transfer system has nonlinear characteristics. However, the traditional analysis method equates it to a pure resistor, which leads to a certain deviation between the theoretical analysis and the actual circuit. This will reduce the accuracy of the inductive power transfer (IPT) system model and affect the soft switching operation of the inverter. In this paper, the IPT system with S‐type topology on the secondary side is studied. Firstly, the resistance–inductance characteristics of the rectifier load are analyzed by simulation, and then a second‐order circuit response model is established to solve the time‐domain expression of voltage and current. Then, the fundamental component of voltage and current is extracted by Fourier transform to calculate the impedance value of the rectifier load, and the mathematical calculation model of the rectifier load is established. On this basis, the influence of the inductive component of the rectifier load on the input impedance of the IPT system is analyzed. Then, a parameter design method for zero voltage switching is proposed for S‐S and LCC‐S topologies. Finally, an experimental platform of S‐S and LCC‐S IPT system is built. The correctness and effectiveness of the theoretical analysis and the proposed parameter design method are verified by experiments.

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Rectifier Load Analysis for Electric Vehicle Wireless Charging System

Cited by 50 publications

References 28 publications

Analysis of the input impedance of the rectifier and design of LCC compensation network of the dynamic wireless power transfer system

Analysis of the input impedance of the rectifier and design of LCC compensation network of the dynamic wireless power transfer system

Interoperability study of fast wireless charging and normal wireless charging of electric vehicles with a shared receiver

Rectifier load modeling and zero voltage switching design of inductive power transfer system with S‐type topology on the secondary side

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