3-D Misalignment Tolerant E-Scooter IPT System With Hybrid Control Based on Three-Coil Design for Load-Independent CC/CV Outputs

This article proposes a hybrid control strategy to address the large-scale 3-D misalignment tolerance (MT) challenges for E-scooter IPT charging systems. The strategy is based on a three-coil loosely coupled transformer (LCT) design that realizes constant current (CC) and constant voltage (CV) outpu...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on transportation electrification 2024-12, Vol.10 (4), p.9163-9177
Main Authors: Li, Guangyao, Zhang, Hailong, Chen, Yafei, Xie, Junchen, Jo, Cheol-Hee, Kim, Dong-Hee
Format: Article
Language:English
Subjects:
Air gaps
Batteries
Coils
Constant current (CC) output
constant voltage (CV) output
Control methods
Control systems
Design optimization
Electric bridges
Electric potential
Hybrid control
Inductance
inductive power transfer (IPT)
Load fluctuation
Misalignment
misalignment tolerance (MT)
Motor scooters
phase shift control (PSC)
Receivers
Topology
Topology optimization
Voltage
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This article proposes a hybrid control strategy to address the large-scale 3-D misalignment tolerance (MT) challenges for E-scooter IPT charging systems. The strategy is based on a three-coil loosely coupled transformer (LCT) design that realizes constant current (CC) and constant voltage (CV) outputs. To achieve this, a control method using a novel half-bridge rectifier (HBR) is proposed to realize topology reconfigurability based on DS-LCC and LCC-S topologies with CC and CV output characteristics, respectively. In addition, a magnetics optimization-based design method for adjustable mutual inductance of three-coil structure is proposed to address the horizontal MT. Phase shift control (PSC) is also adopted to solve the vertical MT problem caused by different types of E-scooter and air gap variations caused by tilt angles. Finally, according to a predetermined MT range, a 122.8 W/85 kHz experimental prototype is designed to test the performance of the proposed hybrid control IPT system. Experimental results show that the proposed IPT system is able to control the CC and CV within a 5.5% fluctuation range across MT ranges of 42% and 15% in the horizontal and vertical directions, respectively. Furthermore, high efficiency and zero-voltage switching (ZVS) operation is maintained over a wide range of load variations.
ISSN:2332-7782
2577-4212
2332-7782
DOI:10.1109/TTE.2024.3370735