Optimized Design of Coils and Iron Cores for a Saturated Iron Core Superconducting Fault Current Limiter

Wei, Ziqiang; Xin, Ying; Jin, Jianxun; Li, Quan

doi:10.1109/tasc.2016.2601621

Cited by 23 publications

(13 citation statements)

References 10 publications

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“…Even though HTS is more expensive than copper, it has already been used as coil material, e.g. for power generators of wind turbines [113], [114] and fault current limiters [115], [116]. But HTS is not as prevalent in WPT.…”

mentioning

confidence: 99%

A critical review on wireless charging for electric vehicles

Machura

2019

Renewable and Sustainable Energy Reviews

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206

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Electric vehicles (EVs) have recently been significantly developed in terms of both performance and 10 drive range. There already are various models commercially available, and the number of EVs on road 11 increases rapidly. Although most existing EVs are charged by electric cables, companies like Tesla, 12 BMW and Nissan have started to develop wireless charged EVs that don't require bulky cables. 13 Rather than physical cable connection, the wireless (inductive) link effectively avoids sparking over 14 plugging/unplugging. Furthermore, wireless charging opens new possibilities for dynamic chargingcharging while driving. Once realised, EVs will no longer be limited by their electric drive range and the requirement for battery capacity will be greatly reduced. This has been prioritised and promoted worldwide, particularly in UK, Germany and Korea. This paper presents a thorough literature review on the wireless charging technology for EVs. The key technical components of wireless charging are summarised and compared, such as compensation topologies, coil design and communication. To enhance the charging power, an innovative approach towards the use of superconducting material in coil designs is investigated and their potential impact on wireless charging is discussed. In addition, health and safety concerns about wireless charging are addressed, as well as their relevant standards. Economically, the costs of a wide range of wireless charging systems has also been summarised and compared.

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mentioning

confidence: 99%

A critical review on wireless charging for electric vehicles

Machura

2019

Renewable and Sustainable Energy Reviews

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206

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“…Formulas (8) and (13) show that at the same AC and DC excitations, the DC component of the magnetic flux flowing through the CSFCL is apparently larger than that flowing through the SFCL. Although the AC component of the SFCL magnetic flux is greater than that of the CSFCL flux, the DC flux has a stronger impact on the core saturation during normal operation; as a result, the total flux of the CSFCL is still bigger than that of the SFCL.…”

Section: Leakage Magnetic Fluxmentioning

confidence: 99%

“…The influence of the SFCL on the relay protection (including over-current protection [8], line distance protection [9], and zero-sequence current protection [10]) of power systems has been discussed by other researchers. SFCL prototypes connected to a grid and rated at 35,200 and 500 kV have been examined in previous studies [11][12][13]. Permanent magnet (PM)-biased SFCLs are employed to generate magneto motive force (MMF) that saturates the core in the normal state [14,15].…”

Section: Introductionmentioning

confidence: 99%

Three-Phase Saturated-Core Fault Current Limiter

et al. 2018

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The saturated-core fault current limiter (SFCL) is widely used to limit the fault current. However, in the conventional SFCL structure, alternating current (AC) and direct current (DC) coils are wound on different loosely coupled cores. Owing to the leakage inductance, the traditional structure demonstrates relatively large demand for DC excitation power and excessive impedance during saturation. In this study, a new structure for winding closely coupled DC and AC coils on the same core in three phases is proposed to reduce the influence of leakage reactance on the SFCL performance. The leakage magnetic flux generated by both structures is analyzed by performing finite element analysis simulations and utilizing a magnetic field division method. The impedance of the limiter is measured at different DC currents and air gaps to optimize its dynamic performance. A fabricated prototype of the proposed limiter exhibits smaller steady-state losses and high current-limiting capability.

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“…Both types have the advantages of low power loss during the normal conditions and fast response. Whereas, high weight/size, requiring of an advanced cooling system, and high cost are their main drawbacks [2]. With the recent advances in the semiconductor technology, implementing the SSFCL has become more realistic and cost-efficient [3].…”

Section: Introductionmentioning

confidence: 99%

Modified Secondary-Control-Based Fault Current Limiter for Inverters

Beheshtaein

Savaghebi

Cuzner

et al. 2019

IEEE Trans. Ind. Electron.

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Fault Current Limiters (FCLs) are one of the main solutions to upcoming challenges in microgrid protection. Regarding the high penetration of distributed generations (DGs) in future power system, designing cheap and effective FCL is a necessity. The present study addresses this issue by proposing an embedded FCL operating based on modifying the secondary control of four-wire DG. As this method is presented for a four-wire system, besides very low implementing cost, it has independency and flexibility to only limit the current of DG faulted phase. This study also provides real-time simulation results by OPAL-RT to compare the proposed method with a virtual-impedance-based FCL to validate its effectiveness. Finally, experimental results are presented to validate the effectiveness of the proposed FCL.

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Optimized Design of Coils and Iron Cores for a Saturated Iron Core Superconducting Fault Current Limiter

Cited by 23 publications

References 10 publications

A critical review on wireless charging for electric vehicles

A critical review on wireless charging for electric vehicles

Three-Phase Saturated-Core Fault Current Limiter

Modified Secondary-Control-Based Fault Current Limiter for Inverters

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