Balancing of Common DC-Bus Parallel Connected Modular Inductive Power Transfer Systems

2021-01-01
IEEEThe aim of this paper is to design a modular, fault tolerant multi-transmitter(Tx)/multi-receiver(Rx) parallel connected common DC bus inductive power transfer(IPT) system to replace slip rings in wind turbines or brushless exciters. In parallel connected common DC bus systems, current unbalance is a major issue that results in thermal stresses and over current or voltages. In this paper, two different new current balancing methods are proposed: Cross-coupled Rx modules and intentional de-tuning of Rx side resonant frequency. These methods are investigated both analytically and experimentally for a single Tx and two Rx system for a 500 W prototype. The proposed methods are tested independently, and then the combined current balancing method is also investigated. For the same misalignment case, cross-coupled/de-tuned has a 55.8% current balancing improvement compared to de-coupled/fully-tuned topology.
Citation Formats
H. Polat, E. Ayaz, O. Altun, and O. Keysan, “Balancing of Common DC-Bus Parallel Connected Modular Inductive Power Transfer Systems,” pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85104641295&origin=inward.