Experimental verification of limiting fault currents in MVDC systems by using modular multilevel converters

Sun, Kaiqi; Soto, Dionne; Steurer, M.; Faruque, M. Omar

doi:10.1109/ests.2015.7157857

Cited by 22 publications

(7 citation statements)

References 18 publications

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“…While this work has demonstrated the gain in speed of fault current interruption by virtue of inhibiting the gating the SCRs of the generator rectifier based on DC side measurements, a more comprehensive investigation is required to develop a system wide fault management approach. Additional work by several of the authors on fault current limited MVDC systems can be found in [15] , [21] - [23].…”

Section: Results From Fault Clearing Experiementsmentioning

confidence: 99%

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Analysis of experimental rapid power transfer and fault performance in DC naval power systems

Steurer

Bosworth

Soto

et al. 2015

2015 IEEE Electric Ship Technologies Symposium (ESTS)

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This paper first puts the challenges from design constraints imposed by mission load requirements on future naval surface combatants into context. Moreover, it provides results from experiments at the three partner universities designed to de-risk emerging medium voltage DC (MVDC) technology based systems and to provide validated models for future systems studies. These experiments are carries out in three recently established test beds all designed for MVDC related work. The investigations specifically targeted two major areas of interest: fault management and rapid power transfer between loads and sources. The results obtained to date reveal valuable insight into both areas.

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Section: Results From Fault Clearing Experiementsmentioning

confidence: 99%

“…This is a particular challenge with short circuits. However, several alternative solutions for fault management in DC systems are either available or are being investigated by the research community at this time [13], [14], [15].…”

Section: E the Promise Of Mvdcmentioning

confidence: 99%

Analysis of experimental rapid power transfer and fault performance in DC naval power systems

Steurer

Bosworth

Soto

et al. 2015

2015 IEEE Electric Ship Technologies Symposium (ESTS)

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“…Such a concept is described in [3]. When a fault happens on such a system, current is limited by the power electronics converters connected to the MVDC system [4]. Such a system requires that all the MVDC sources perform the current limiting function and that all loads which are connected to the MVDC bus to operate seamlessly during the rapid de-and re-enegization process shown in Fig 1. The MVDC system structure is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Modular multilevel DAB (M<sup>2</sup>DAB) converter for shipboard MVDC system with fault protection and ride-through capability

Xie

Shi

2015

2015 IEEE Electric Ship Technologies Symposium (ESTS)

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Shipboard Medium Voltage Direct Current (MVDC) system has gained increasing popularity. However, fault management of MVDC system is one critical challenge. In this paper, a modular multilevel dual active bridge (M 2 DAB) converter is proposed to be applied in shipboard MVDC system. Under the presented unified control strategy, the bi-directional isolated dc/dc converter with fault protection and ride-through capability can limit the fault current and maintain operation with very wide input voltage range. Detailed system analysis and control strategy are given. The simulation results are presented to verify the operation and functionality of the proposed method.

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“…This reinforces the notion that since the electrical architecture will be strongly influenced by the feasible fault management solutions, and the FMS must define the electrical network design. By control of the solid state switches (manipulating firing angle 15,16,17 , pulse width modulation control 18 ) or current blocking diodes 19 within some topologies of power converters it is possible to limit fault current or de-energise the downstream network when a fault occurs. If converters are included in an architecture for power conditioning purposes, exploiting this potential dual functionality may provide a weight and efficiency benefit.…”

Section: B Power Electronic Convertersmentioning

confidence: 99%

Impact of Key Design Constraints on Fault Management Strategies for Distributed Electrical Propulsion Aircraft

Flynn¹,

Jones²,

Rakhra³

et al. 2017

53rd AIAA/SAE/ASEE Joint Propulsion Conference

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Electrically driven distributed propulsion has been presented as a possible solution to reduce aircraft noise and emissions, despite increasing global levels of air travel. In order to realise electrical propulsion, novel aircraft electrical systems are required. Since the electrical system must maintain security of power supply to the motors during flight, the protection devices employed on an electrical propulsion aircraft will form a crucial part of system design. However, electrical protection for complex aircraft electrical systems poses a number of challenges, particularly with regard to the weight, volume and efficiency constraints specific to aerospace applications. Furthermore, electrical systems will need to operate at higher power levels and incorporate new technologies, many of which are unproven at altitude and in the harsh aircraft environment. Therefore, today's commercially available aerospace protection technologies are likely to require significant development before they can be considered as part of a fault management strategy for a next generation aircraft. By mapping the protection device trade space based on published literature to date, the discrepancy between the current status of protection devices and the target specifications can be identified for a given time frame. This paper will describe a process of electrical network design that is driven by the protection system requirements, incorporates key technology constraints and analyses the protection device trade space to derive feasible fault management strategies.

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Experimental verification of limiting fault currents in MVDC systems by using modular multilevel converters

Cited by 22 publications

References 18 publications

Analysis of experimental rapid power transfer and fault performance in DC naval power systems

Analysis of experimental rapid power transfer and fault performance in DC naval power systems

Modular multilevel DAB (M<sup>2</sup>DAB) converter for shipboard MVDC system with fault protection and ride-through capability

Impact of Key Design Constraints on Fault Management Strategies for Distributed Electrical Propulsion Aircraft

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