Component-Splitting and Multi-Segment Compensation Methods for Common-Mode and Differential-Mode EMI Suppression in High-Power SWPDT Systems
IEEE Transactions on Power Electronics(2024)
Harbin Inst Technol
Abstract
In this letter, both the suppression methods of the common-mode (CM) and differential-mode (DM) interference are proposed in a high-power simultaneous wireless and data power transfer (SWPDT) system. The split compensation inductors and capacitors provide the CM current path with the help of the additional Y capacitors and the high-frequency CM interference to the data channel at the switching instant is effectively suppressed. In addition, the coupling coil multiplexed for power and data transfer is segmentally compensated by the distribution compensation of the series compensation capacitors, reducing the DM interference voltage of the power carrier significantly. Thus, high-quality data can be received when transferring high power. A 3.3-kW experimental prototype with a data transfer rate of 115.2 kbps is designed to verify the effectiveness of the proposed interference suppression method.
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Key words
Common-mode (CM) interference,components splitting,differential-mode (DM) interference,multisegment compensation,wireless power transfer (WPT)
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