A Design Method for Making an LCC Compensation Two-Coil Wireless Power Transfer System More Energy Efficient Than an SS Counterpart

Liu, Xu; Clare, Lindsay; Yuan, Xibo; Wang, Chonglin; Liu, Jianhua

doi:10.3390/en10091346

Cited by 32 publications

(18 citation statements)

References 24 publications

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“…Among the various compensation topologies, the double-sided Inductor-Capacitor-Capacitor (LCC) compensation topology has the advantage that the resonant frequency and transmitter coil current are independent of the coupling coefficient and load [10][11][12][13][14]. However, this compensation topology has a constant current output characteristic at the resonant frequency.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Control of Double-Sided LCC Compensation Topology with Semi-Bridgeless Active Rectifier for Inductive Power Transfer System

et al. 2019

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This paper proposes the modeling and design of a controller for an inductive power transfer (IPT) system with a semi-bridgeless active rectifier (S-BAR). This system consists of a double-sided Inductor-Capacitor-Capacitor (LCC) compensation network and an S-BAR, and maintains a constant output voltage under load variation through the operation of the rectifier switches. Accurate modeling is essential to design a controller with good performance. However, most of the researches on S-BAR have focused on the control scheme for the rectifier switches and steady-state analysis. Therefore, modeling based on the extended describing function is proposed for an accurate dynamic analysis of an IPT system with an S-BAR. Detailed mathematical analyses of the large-signal model, steady-state operating solution, and small-signal model are provided. Nonlinear large-signal equivalent circuit and linearized small-signal equivalent circuit are presented for intuitive understanding. In addition, worst case condition is selected under various load conditions and a controller design process is provided. To demonstrate the effectiveness of the proposed modeling, experimental results using a 100 W prototype are presented.

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Section: Introductionmentioning

confidence: 99%

Modeling and Control of Double-Sided LCC Compensation Topology with Semi-Bridgeless Active Rectifier for Inductive Power Transfer System

et al. 2019

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“…Different coupling compensation circuits were adopted to improve circuit efficiency [4,6,11,12]. In addition, four basic topologies of compensation circuits exist, depending on how the compensation capacitors are connected to the primary and secondary coils: series-series (SS), series-parallel, parallel-series, and parallel-parallel topologies.…”

Section: Introductionmentioning

confidence: 99%

“…These topologies were analyzed in detail in reference [13]. An inductor/capacitor/capacitor compensation topology was adopted in both the primary and secondary circuits in [11,12], while it was inserted at only the primary side in [8]. Meanwhile, an inductor/capacitor topology was placed at the secondary side in [4] and an inductance was paralleled before the rectifier circuits in [6].…”

Section: Introductionmentioning

confidence: 99%

An Efficient Topology for Wireless Power Transfer over a Wide Range of Loading Conditions

Wang

Zheng

et al. 2018

Energies

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Abstract:Although an inductive power transfer (IPT) system can transfer power efficiently in full-load conditions, its efficiency obviously decreases in light-load conditions. To solve this problem, based on a two-coil IPT system with a series-series compensation topology, a single-ended primary-inductor converter is introduced at the secondary side. By adjusting the set effective value of the current in the primary coil, the converter input voltage changes to maintain the equivalent input resistance of the converter in an optimal condition. The system can then transfer the power efficiently with the wide load conditions. Moreover, the system operates at a constant resonance frequency with a high power factor. Both the simulation and experimentation of a prototype with a 10 W IPT system demonstrate the effectiveness of the proposed topology for wireless power transfer.

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“…Therefore, SS compensation topology is superior to the other three compensation topologies because its resonant frequency is independent of the coupling coefficient and the load conditions [6]. The defect of the SS compensation topology is the poor output voltage regulation capability [11], so many other compensation topologies have been proposed in order to improve the efficiency or Energies 2018, 11, 307 2 of 14 realize other purposes [12]. In [13], an inductor/capacitor (LC) compensation network is employed for the primary side and an inductor/capacitor/inductor (LCL) resonant network is formed for WPT.…”

Section: Introductionmentioning

confidence: 99%

A New ZVS Tuning Method for Double-Sided LCC Compensated Wireless Power Transfer System

Deng

Shu

et al. 2018

Energies

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This paper presents a new zero voltage switching (ZVS) tuning method for the double-sided inductor/capacitor/capacitor (LCC) compensated wireless power transfer (WPT) system. An additional capacitor is added in the secondary side of the double-sided LCC compensation network in order to tune the network to realize ZVS operation for the primary-side switches. With the proposed tuning method, the turn off current of the primary-side switches at the low input voltage range can be reduced compared with the previous ZVS tuning method. Consequently, the efficiency of the WPT at the low input voltage range is improved. Moreover, the relationship between the input voltage and the output power is more linear than that of the previous ZVS tuning method. In addition, the proposed method has a lower start-up voltage. The analysis and validity of the proposed tuning method are verified by simulation and experimental results. A WPT system with up to 3.5 kW output power is built, and 95.9% overall peak efficiency is achieved.

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A Design Method for Making an LCC Compensation Two-Coil Wireless Power Transfer System More Energy Efficient Than an SS Counterpart

Cited by 32 publications

References 24 publications

Modeling and Control of Double-Sided LCC Compensation Topology with Semi-Bridgeless Active Rectifier for Inductive Power Transfer System

Modeling and Control of Double-Sided LCC Compensation Topology with Semi-Bridgeless Active Rectifier for Inductive Power Transfer System

An Efficient Topology for Wireless Power Transfer over a Wide Range of Loading Conditions

A New ZVS Tuning Method for Double-Sided LCC Compensated Wireless Power Transfer System

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