Multiphase Interleaved IPT Based Current-Source Converter for High-Current Application

This paper proposes a multiphase interleaved inductive power transfer (IPT) based dc-dc converter for high-current applications. There are three main contributions. First, the proposed converter is designed based on a loosely coupled IPT system with series compensation capacitors, which permits larg...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in industrial electronics (Print) 2022-07, Vol.3 (3), p.1-1
Main Authors: Wang, Yao, Zhao, Shuyan, Kheirollahi, Reza, Mostafa, Amr a, Zhang, Hua, Lu, Fei
Format: Article
Language:English
Subjects:
Capacitors
Circuit breakers
Circuit faults
Circuits
Converters
Current converters (AC to DC)
Current sources
Electric potential
Harmonic analysis
High current
high-current application
Inductance
Inductive power transfer (IPT)
Magnetic resonance
Magnetic saturation
Multiphase
multiphase interleaved
Power harmonic filters
Power transfer
Ripples
Saturation magnetization
solid-state circuit breaker
Steady state
Voltage
Zero voltage switching
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Summary:This paper proposes a multiphase interleaved inductive power transfer (IPT) based dc-dc converter for high-current applications. There are three main contributions. First, the proposed converter is designed based on a loosely coupled IPT system with series compensation capacitors, which permits large leakage inductance and avoid magnetic saturation. Second, series capacitors are used to compensate the magnetic coupler, which achieves load-independent output current, namely a current-source converter. Third, a scalable multiphase converter is achieved with an input-parallel output-parallel structure for high-current. Meantime, an interleaved control strategy is implemented to an N-phase system with an angle shift of 360/(2N), reducing output current ripples. A 2kW/100A 3-phase converter prototype is implemented with zero-voltage-switching (ZVS) and harmonic loss suppression. Experimental results show a load-independent output current, which is linearly regulated by input dc voltage. With an input voltage of 480V, the output current reaches 101.5A with a small peak-peak ripple of 2.4A. Output power reaches 2.07kW with a 91.39% dc-dc efficiency. A steady-state test for a solid-state circuit breaker (SSCB) is conducted using the proposed high-current converter, showing its application in evaluating steady-state efficiency and thermal performance of SSCB.
ISSN:2687-9735
2687-9743
DOI:10.1109/JESTIE.2022.3165990