Power converter topologies for a high performance transformer rectifier unit in aircraft applications

In more electric aircraft (MEA) weight reduction and energy efficiency constitute the key figures. Additionally, the safety and continuity of operation of its electrical power distribution system (EPDS) is of critical importance. These sets of desired features are in disagreement with each other, because higher redundancy, needed to guarantee the safety of operation, implies additional weight. In fact, EPDS is usually divided into isolated sections, which need to be sized for the worst-case scenario. Several concepts of EPDS have been investigated, aiming at enabling the power exchange among separate sections, which allows better optimization for power and weight of the whole system. In this paper, an approach based on the widespread use of multi-port power converters for both DC/DC and DC/AC stages is proposed. System integration of these two is proposed as a multiport power conversion system (MPCS), which allows a ring power distribution while galvanic isolation is still maintained, even in fault conditions. Thus, redundancy of MEA is established by no significant weight increase. A machine design analysis shows how the segmented machine could offer superior performance to the traditional one with same weight. Simulation and experimental verifications show the system feasibility in both normal and fault operations.

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“…• The efficiency and power density of MAB is higher than traditional TRUs according to its high frequency transformers [14].…”

Section: A Dc/dc Multiple Active Bridge Convertersmentioning

confidence: 98%

A Multiport Power Conversion System for the More Electric Aircraft

Yan

Yang

et al. 2020

IEEE Trans. Transp. Electrific.

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“…6(b) are constants. From (29), it can be seen that without variable frequency, the battery charging current I Bat is constant and independent of load.…”

Section: B CC Output Characteristics Of Lcc-s Compensation Topologymentioning

confidence: 99%

“…3 shows the structure of the proposed switching hybrid LCC-S WPT system with weak communication. U DC is the DC-link voltage, which is normally produced by an active three-phase rectifier (ATPR) [29]. Q 1 -Q 4 are four metallic oxide semiconductor field effect transistors (MOSFETs) that construct the FBI to convert the DC component into an AC component.…”

Section: Introductionmentioning

confidence: 99%

A Switching Hybrid LCC-S Compensation Topology for Constant Current/Voltage EV Wireless Charging

et al. 2019

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Wireless power transfer (WPT) technology has been widely applied to automobile industries, household electronics and medical devices because of its many advantages. The hybrid battery charging scheme, which combines constant voltage (CV) and constant current (CC), is considered to be quite reasonable in view of the limitations of the conventional CC/CV implementation scheme. In this study, based on the inductance and double capacitances-series (LCC-S) compensation topology, a switching hybrid topology is proposed for CC/CV electric vehicle (EV) battery charging. The topology parameters are designed according to the specified CV and zero phase angle (ZPA). In the CC charging mode, two additional capacitances are added to the topology for CC and ZPA implementation. Based on the proposed weak communication, the CC and CV charging mode can be converted via two AC switches (ACSs). The proposed hybrid system provides a simple structure, easy controllability, and stable output. A 2.5-kW experimental prototype is configured to verify the proposed hybrid charger. The maximum DC efficiencies (at 2.5-kW) of the CC and CV charging modes are 89.28% and 88.33%, respectively. INDEX TERMS Wireless power transfer (WPT), electric vehicle (EV), switching hybrid topology, inductance and double capacitances-series (LCC-S), constant current/constant voltage (CC/CV).

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“…One of the recent proposed topologies has low switch number, and power factor correction [12,13]. It is transformerless but unfortunately does not pass some of the world standards and law requirements for galvanic separation from the mains [4,14]. In this study a solution for galvanic isolation by a small HF transformer is presented.…”

Section: Introductionmentioning

confidence: 99%

Topology of Galvanic Isolated Battery Charging Unit With Power Factor Correction

Rakanov

2024

JCTM

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The present study investigates topology for battery charging units (BCU) with simple design and power factor correction. It has a galvanic isolation between the grid and the battery, which is one of the law and standard requirements. The impulse transformer ensures galvanic isolation, which makes the topology suitable for onboard electric vehicles (EV) charging units (OBC). The study also presents a simulation model a simulation model with the help of which a simulation is conducted and a result is obtained.

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Power converter topologies for a high performance transformer rectifier unit in aircraft applications

Cited by 18 publications

References 51 publications

A Multiport Power Conversion System for the More Electric Aircraft

A Multiport Power Conversion System for the More Electric Aircraft

A Switching Hybrid LCC-S Compensation Topology for Constant Current/Voltage EV Wireless Charging

Topology of Galvanic Isolated Battery Charging Unit With Power Factor Correction

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