Modular Bidirectional Solid-State DC Circuit Breaker for Next-Generation Electric Aircrafts

Raghavendra, Venkata; Banavath, Satish Naik; Ajmal, C. N. Muhammed; Ray, Anindya

doi:10.1109/jestpe.2022.3176929

Cited by 20 publications

(6 citation statements)

References 43 publications

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“…However, the high-power rating of the thyristors can compensate for the adverse effect caused by the coupled inductor's weight on the power density of the CB. Z-SSCBs with coupled inductors have already been identified to be suitable for aircraft applications with higher power levels [13]. Thus, the Z-SSCB investigated in this paper may contribute to increasing the power density even further.…”

Section: Design Considerations Of the Z-sscbmentioning

confidence: 97%

“…The on-state losses of MOSFETs increase with an increased current magnitude and, in general, silicon-based thyristors may exhibit lower on-state losses than MOSFETs at the same current level [13]. Thyristors are available in voltage ratings ranging from tens of volts to several thousand volts.…”

Section: Power Loss Analysis Of Z-sscbsmentioning

confidence: 99%

“…In general, Z-SSCBs can achieve automatic interruption and isolation of short-circuit fault currents without the need for additional fault detection circuitry due to the fastrising characteristics of dc short-circuit fault currents and the semi-controlled characteristics of thyristors. Therefore, it may be possible to protect the dc power systems in MEA using Z-SSCBs [13]. Unidirectional [14]- [16] and bidirectional [17]- [19] Z-SSCB topologies have been proposed to this end.…”

Section: Introductionmentioning

confidence: 99%

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A Fault Protection Strategy Based on Z-Source Solid State Circuit Breaker for More Electric Aircraft

Wang,

Tao,

Wang

et al. 2024

IEEE Trans. Transp. Electrific.

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High-voltage direct-current (HVDC) rated at 270 Vdc is one of the main power supply technologies expected for future more electric aircraft (MEA). However, dc protection is still one major challenge preventing the wide deployment of HVDC. To overcome this, Z-source solid-state circuit breakers (Z-SSCBs) could be employed due to their simple structure and fast speed of response. However, Z-SSCBs alone cannot effectively isolate a short-circuit fault when a large fault resistance and a small fault current ramp rate are present, which would greatly damage MEA. In this paper, an auxiliary protection strategy based on Z-SSCBs is presented to address this problem. The strategy combines inverse-time overcurrent and voltage protection to force the opening of the Z-SSCB when its automatic triggering fails. The principle of operation of a Z-SSCB is discussed, and the design process of the protection strategy is presented in detail. Software simulations using Saber and experimental tests have been carried out to validate the protection strategy. Both sets of results match well, offering a good performance and meeting IEEE protection (Std C37.112-2018) and aircraft electrical standards (MIL-STD-704F). It is shown that with the auxiliary protection strategy, the Z-SSCB successfully isolates faults against overcurrent, overvoltage and undervoltage operating conditions.

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Section: Design Considerations Of the Z-sscbmentioning

confidence: 97%

Section: Power Loss Analysis Of Z-sscbsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Fault Protection Strategy Based on Z-Source Solid State Circuit Breaker for More Electric Aircraft

Wang,

Tao,

Wang

et al. 2024

IEEE Trans. Transp. Electrific.

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“…Furthermore, the absence of zero-crossing points in the DC load current poses a challenge for traditional protection methods. Mechanical circuit-breakers (MCB), commonly used in AC systems, rely on zero-crossing points to interrupt the current flow effectively [12][13][14]. However, in a DC based EPS, an alternative protection technology that can interrupt the current without relying on zero-crossing points is required.…”

Section: Introductionmentioning

confidence: 99%

“…The literature review presented in [20] examined various aspects related to SSPCs, which included power semiconductor technologies, circuit configurations, overvoltage clamping circuits, gate drivers, and fault detection methods [14,[20][21][22][23][24][25][26]. Different semiconductor technologies were discussed, each with their advantages and limitations.…”

Section: Introductionmentioning

confidence: 99%

Design Analysis of SiC-MOSFET Based Bidirectional SSPC for Aircraft High Voltage DC Distribution Network

Khera,

Bozhko,

Wheeler

2023

IEEE Access

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Research on electric power systems (EPSs) for the aviation industry has recently grown significantly due to the need to reduce global CO2 emissions from transportation. To fulfill the power requirements of a more electric aircraft (MEA), DC power distribution has emerged as a potential solution. However, the progress of DC distribution faces significant difficulties related to system protection. Solidstate power controllers (SSPCs) are being considered in these applications due to their ability to provide fast-tripping mechanisms for system protection. Although SSPCs have been successfully implemented in low voltage DC 28V aircraft networks, their application in high voltage systems (270 V, ±270 V, or higher) presents challenges, such as over-voltage and excessive power loss, particularly for high-power applications. This paper focuses on the development of SSPCs for a 270 V DC system with a current rating of 125 A / 250 A. The paper presents designs for over-voltage suppression and thermal management of the SSPCs. The study also includes a comparative analysis of using a different number of SiC MOSFET modules connected in series and parallel and their effect on the cooling requirements and circuit temperature to assess power losses, power density, weight, and cooling requirements for the SSPCs. A prototype of the proposed SSPC has been built for experimental validation. Results show effective overvoltage suppression to 480 V and quick interruption capabilities with trip currents of 250 A and 375A within time intervals of 160 µs and 300 µs, respectively, for line inductance of 105 µH. The circuit withstands energy up to 22.5 J for a breaking current of 375 A.INDEX TERMS Electric power systems, more electric aircraft, solid-state power controllers, thermal design, SiC MOSFET, DC distribution and cooling requirements.

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Modified O-Z-Source DC Circuit Breaker for Electrical Power System Protection of Future Aircrafts

Raghavendra

Banavath

et al. 2023

2023 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Modular Bidirectional Solid-State DC Circuit Breaker for Next-Generation Electric Aircrafts

Cited by 20 publications

References 43 publications

A Fault Protection Strategy Based on Z-Source Solid State Circuit Breaker for More Electric Aircraft

A Fault Protection Strategy Based on Z-Source Solid State Circuit Breaker for More Electric Aircraft

Design Analysis of SiC-MOSFET Based Bidirectional SSPC for Aircraft High Voltage DC Distribution Network

Modified O-Z-Source DC Circuit Breaker for Electrical Power System Protection of Future Aircrafts

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