Modeling and design of control loop with semi-bridgeless rectifier in wireless charging system

Zhao, Fandan; Zhu, Chunbo; Lu, Rengui; Song, Kai; Wei, Guo

doi:10.1109/itec-ap.2017.8080825

Cited by 5 publications

(1 citation statement)

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“…However, most of the researches on an IPT system with an S-BAR have focused on the control scheme of the rectifier switches [22][23][24][25][26][27][28][29] and steady-state analysis [29,30]. The authors of [31] discussed a small-signal modeling method for an IPT system with an S-BAR, but this method did not reflect the dynamics of a resonant network. This was because a secondary side resonant circuit was assumed to be an ideal AC current source to simplify the analysis.…”

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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