Impedance-Based Synchronization of Active Rectifier in Inductive Power Transfer Systems

10.36227/techrxiv.16578305 ◽

2021 ◽

Author(s):

Guodong Zhu ◽

Dawei Gao

Keyword(s):

Phase Synchronization ◽

Impedance Matching ◽

Pi Controller ◽

Power Transfer ◽

Inductive Power Transfer ◽

Active Rectifier ◽

Control Objective ◽

Ac Current ◽

Active Rectification ◽

Inductive Power

Active rectification is a common option for improving efficiency and impedance matching in inductive power transfer systems. One of the technical challenges in active rectification is the synchronization of phase angle. In this work, the rectifier input impedance, which is calculated from the AC current and AC voltage, is used as the control objective during phase synchronization. When the impedance angle matches the target value, synchronization of phase is automatically fulfilled. The details of a PI-controller-based phase synchronization algorithm is introduced, and the PI coefficients are manually optimized. Experimental results demonstrate the good performance of the proposed phase synchronization method. <br>

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Switch Design for a High-Speed Switching Semi - Bridgeless Active Rectifier of Inductive Power Transfer Systems Considering Reverse Recovery Phenomenon

2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia) ◽

10.23919/icpe2019-ecceasia42246.2019.8796995 ◽

2019 ◽

Author(s):

Sangjoon Ann ◽

Won-Jin Son ◽

Jongeun Byun ◽

Jae Han Lee ◽

Byoung Kuk Lee

Keyword(s):

High Speed ◽

Power Transfer ◽

Inductive Power Transfer ◽

Active Rectifier ◽

Switch Design ◽

High Speed Switching ◽

Inductive Power

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

Energies ◽

10.3390/en12203921 ◽

2019 ◽

Vol 12 (20) ◽

pp. 3921

Author(s):

Cha ◽

Kim ◽

Park ◽

Choi

Keyword(s):

Steady State ◽

Equivalent Circuit ◽

Small Signal ◽

Power Transfer ◽

Large Signal ◽

Signal Model ◽

Worst Case ◽

Inductive Power Transfer ◽

Active Rectifier ◽

Inductive Power

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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