An Efficiency Optimization-Based Asymmetric Tuning Method of Double-Sided <i>LCC</i> Compensated WPT System for Electric Vehicles

Chen, Yafei; Zhang, Hailong; Shin, Chang-Su; Jo, Cheol-Hee; Park, Sung-Jun; Kim, Dong‐Hee

doi:10.1109/tpel.2020.2984712

Cited by 64 publications

(35 citation statements)

References 31 publications

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“…The FBI comprising four MOSFETs S 1 -S 4 is utilized to convert the DC-link voltage U DC-Link to the AC voltage U AB as shown in Figure 2. In the IPT converter, the fundamental harmonic analysis method is widely used for qualitative analysis because the resonant network can suppress harmonics [11]. The relational expression of U AB and U DC-link can be derived as…”

Section: Theoretical Analysis 21 Analysis Outline Of the Lcc-s Compen...mentioning

confidence: 99%

“…where D is the duty cycle of U AB in the pulse width modulation control [11]. The LCT comprises transmitter and receiver pads.…”

Section: Theoretical Analysis 21 Analysis Outline Of the Lcc-s Compen...mentioning

confidence: 99%

“…To cope with these problems, research topics include the optimal design of the LCT to achieve a high coupling coefficient and misalignment tolerance [7,8], compensation topologies with constant output current/voltage and zero phase angle (ZPA) characteristics [9], and control methods to regulate the battery charging voltage [10]. Among them, compensation topology can significantly minimize the volt-ampere (VA) rating of the WPT system, improve the power-transfer capability, and help achieve high efficiencies [11].…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

Kim

2021

Energies

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Compensation topologies of the inductive power transfer (IPT) converter for electric vehicles (EVs) have been researched in previous works. However, a methodology for designing a compensation topology based on the efficiency of the IPT converter has been barely discussed. This paper proposes an optimal design methodology for compensation parameters to achieve optimal efficiency of the IPT converter with LCC-S. The optimal output voltage is derived using the losses analysis of the IPT converter, and the IPT converter is designed for the optimal output voltage to achieve the optimal efficiency. Furthermore, the battery management (BM) converter on the receiving side is designed based on the output voltage of the IPT converter, the fluctuation range of the coupling coefficient, and the battery charging voltage. The validity of the proposed IPT converter design methodology is verified by designing different compensation parameters and BM converters. The power rating of the three design cases is 3.3 kW with the same magnetic pads satisfying the SAE J2954 WPT 1 class.

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Section: Theoretical Analysis 21 Analysis Outline Of the Lcc-s Compen...mentioning

confidence: 99%

“…where D is the duty cycle of U AB in the pulse width modulation control [11]. The LCT comprises transmitter and receiver pads.…”

Section: Theoretical Analysis 21 Analysis Outline Of the Lcc-s Compen...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

Kim

2021

Energies

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“…This method can be used to achieve CC output and to realize zero phase angle, which improves the power factor of the system. Chen et al [11] propose an asymmetric parameter tuning method that varies the values of the two compensating inductors of the LCC-LCC topology. The efficiency of the system is improved without changing the system CC output.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Analysis of S-S and LCCL-S Compensation for Wireless Power Transfer with a Wide Range Load Variation

Zhu

et al. 2022

Electronics

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Wireless power transmission (WPT) has great potential for charging electric vehicles. Constant voltage (CV) and constant current (CC) are two major types of battery charging modes. In this paper, we analyze the output characteristics of series–series (S-S) topology and double capacitances and inductances–series (LCCL-S) topology. Voltage gain variation is achieved in the LCCL-S compensation structure without additional components, and the system is still kept in resonant condition. A WPT experimental platform was also built and tested based on the theoretical analysis. When the load resistance is 300 Ω, a voltage gain of 0.7 or 2.22 is achieved for the LCCL-S with a compensating inductor of 100 μH or 33 μH, respectively. The experimental results fit the theoretical analysis. The CC/CV output characteristics and efficiencies of S-S and LCCL-S topologies in a wide load resistance range are also demonstrated. Moreover, zero voltage switch (ZVS) is also implemented in both two systems.

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“…Simulation and experimental results verified the effectiveness of the proposed compensation network and the setting method. The authors of [20] proposed a parameter design method for a DLCC compensation network in the phase-shift process of the full-bridge inverter without an auxiliary circuit, identified and analyzed the conditions for realizing ZVS with a lag switch, and verified the analysis results with a 1 kW radio energy transmission prototype.…”

Section: Introductionmentioning

confidence: 99%

Parameter Optimization of Double LCC MCRWPT System Based on ZVS

et al. 2021

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At present, magnetically coupled resonance wireless power transfer (MCRWPT) is the main technology used in electric vehicle wireless power transfer (WPT) due to its advantages of high transmission power and high efficiency. The resonant compensation circuit of the system generally adopts the double LCC (DLCC) structure, which has many capacitor and inductor components. Therefore, it is necessary to optimize the circuit parameters to improve the transmission performance of the system. In this study, the DLCC compensation circuit was modeled and analyzed to lay the foundation for parameter optimization. Secondly, the size parameters of the energy transmitting and receiving coil were determined, and the influence of the change of the primary and secondary compensation inductance on the circuit element stress and output performance was analyzed to determine the optimal compensation inductance value. Thirdly, the realization condition of zero voltage switching (ZVS) was analyzed, the relationship between the input impedance angle of the compensation circuit and the component parameter value was obtained, and a parameter optimization control strategy for realizing ZVS was proposed. Finally, through simulation and experiment, it was concluded that under different power levels, the efficiency of the parameter optimization strategy proposed in this study is as high as 91.86%, increasing by about 1%. Therefore, the research undertaken in this study can promote the development of WPT technology and has certain practical significance.

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An Efficiency Optimization-Based Asymmetric Tuning Method of Double-Sided LCC Compensated WPT System for Electric Vehicles

Cited by 64 publications

References 31 publications

Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

Optimal Design Methodology on Compensation Parameters of Inductive Power Transfer Converter for Electric Vehicles

A Comparative Analysis of S-S and LCCL-S Compensation for Wireless Power Transfer with a Wide Range Load Variation

Parameter Optimization of Double LCC MCRWPT System Based on ZVS

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