Improving System Efficiency for the More Electric Aircraft: A Look at dc\/dc Converters for the Avionic Onboard dc Microgrid

Buticchi, Giampaolo; Costa, Levy Ferreira; Liserre, Marco

doi:10.1109/mie.2017.2723911

Cited by 114 publications

(65 citation statements)

References 26 publications

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“…SiC components (Wolfspeed C2M0025120D) were employed and a high efficiency has been demonstrated in previous publications [18]. High switching frequencies are desired for the dc-dc converter to increase the power density.…”

Section: Simulationsmentioning

confidence: 99%

A Quadruple Active Bridge Converter for the Storage Integration on the More Electric Aircraft

Buticchi

Costa

Barater

et al. 2018

IEEE Trans. Power Electron.

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Abstract-The More Electric Aircraft concepts aims at increasing the penetration of electric systems on the aircrafts. In this framework, the electrical power distribution system (EPDS) is of high importance. In order to improve the utilization of the generators and face the peak power demand without disconnecting the loads, different technologies of storage are employed. This paper proposes the use of a Quadruple Active Bridge converter, already employed in other fields, to interface a fuel cell, a battery and a supercapacitor bank to the DC bus of the EPDS. This objective can be achieved by employing multiple DC/DC converters, that allow an individual control of the energy sources and a good efficiency. Obtaining the same power control and efficiency with a multi-port power converter constitutes a challenge which is worth taking to reduce cost, volume and weight and increase the system reliability. A novel control based on PI controllers in conjunction with a decoupling system and current feed-forward allow shaping the power request to each port. This, however, leads to an asymmetrical loading of each port, which could decrease the efficiency. A laboratory prototype is used to confirm that this asymmetrical kind of operation, where each port processes a different amount of power, does not imply a marked reduction of efficiency.

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Section: Simulationsmentioning

confidence: 99%

A Quadruple Active Bridge Converter for the Storage Integration on the More Electric Aircraft

Buticchi

Costa

Barater

et al. 2018

IEEE Trans. Power Electron.

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“…The quadruple active bridge converter has been proposed to be used in aircraft systems in several works [5]- [7]. Its multiport characteristic made it the suitable candidate to interface different power sources and to guarantee the power exchange among the DC buses.…”

Section: Power Converter Descriptionmentioning

confidence: 99%

A Smart Transformer-Rectifier Unit for the More Electric Aircraft

Buticchi

Gerada

et al. 2018

2018 IEEE 27th International Symposium on Industrial Electronics (ISIE)

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In the framework of the More Electric Aircraft (MEA), an efficient and flexible power distribution system is of paramount importance. Considering the presence of both AC and DC loads at multiple voltage levels, the distribution system of the most modern aircrafts is intrinsically hybrid. In this scenario, the different buses are connected by AC/DC converters. The simplest approach is to use a Transformer-Rectifier Unit (TRU) based on a low-frequency transformer followed by passive rectifiers to perform the AC/DC conversion. This solution, however, is intrinsically uni-directional, introduces current harmonics in the AC side and can have a considerable size. This paper proposes the use of a Smart-TRU, based on a Cascaded H-Bridge topology and a multi-port DC/DC converter, to solve the issues of the traditional TRU, increasing the controllability of the system. Experiments show how the proposed STRU is resilient to faults in the AC side.

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“…The onboard power system is a typical microgrid (MG) system with distributed supplies and loads [2]. The DC MG has been widely considered as a preferable solution for the future onboard MG and has garnered great attention [3][4][5]. A typical paradigm of the DC MG is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Predictive Control for a Current Source Converter in an Aircraft DC Microgrid

et al. 2019

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A current source converter (CSC) is a promising topology for interfacing aircraft generators with the onboard DC microgrid. In this paper, a hybrid predictive control is proposed for the CSC with an output LC filter in such application. Deadbeat predictive control with larger sampling time is applied to the output circuit, generating reference source currents. Finite-set model predictive control with smaller sampling time is applied to the input circuit to achieve sinusoidal source currents, which is simplified by saving the source current predictions. The proposed scheme eliminates both the proportional-integral controller and the weighting factor, which are required in the existing studies. Besides, it has lower control complexity. A SiC-MOSFET-based prototype is used to verify the validity of the proposed scheme. Experimental results under 150 V/350-800 Hz AC input and 270 V DC output demonstrate the superior control performance.Abstract: A current source converter (CSC) is a promising topology for interfacing aircraft 10 generators with the onboard DC microgrid. In this paper, a hybrid predictive control is proposed 11 for the CSC with an output LC filter in such application. Deadbeat predictive control with larger 12 sampling time is applied to the output circuit, generating reference source currents. Finite-set model 13 predictive control with smaller sampling time is applied to the input circuit to achieve sinusoidal 14 source currents, which is simplified by saving the source current predictions. The proposed scheme 15 eliminates both the proportional-integral controller and the weighting factor, which are required in 16 the existing studies. Besides, it has lower control complexity. A SiC-MOSFET-based prototype is 17 used to verify the validity of the proposed scheme. Experimental results under 150 V/350-800 Hz 18 AC input and 270 V DC output demonstrate the superior control performance.19 Keywords: more electric aircraft; DC microgrid; current source converter; deadbeat predictive 20 control; finite-set model predictive control 21 22 Energies 2019, 12, x FOR PEER REVIEW 3 of 14 while FS-MPC is applied to control source currents. Reference source currents are generated from the 86 output DBPC. In addition, the output DBPC has larger sampling time and the input FS-MPC is 87 simplified by eliminating source current predictions, which reduces the computational burden. 88This paper is organized as follows. Section 2 presents the mathematical model of the CSC system 89 for aircraft DC MG. Section 3 elaborates the principle of the proposed hybrid predictive control 90 scheme. Section 4 shows the simulation and experimental verification. Section 5 draws the conclusion.91 2. Mathematical Model of the CSC System 92 Schematic of the CSC system for the aircraft DC MG is shown in Figure 2. Power source 93 connected to the input side of CSC could be the variable frequency main generators or the auxiliary 94 power units. The input LC filter constituted by the inductor Lfi and the capacitor Cfi attenuates high-95 frequ...

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Improving System Efficiency for the More Electric Aircraft: A Look at dc\/dc Converters for the Avionic Onboard dc Microgrid

Cited by 114 publications

References 26 publications

A Quadruple Active Bridge Converter for the Storage Integration on the More Electric Aircraft

A Quadruple Active Bridge Converter for the Storage Integration on the More Electric Aircraft

A Smart Transformer-Rectifier Unit for the More Electric Aircraft

A Hybrid Predictive Control for a Current Source Converter in an Aircraft DC Microgrid

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