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您的检索式：作者名="Felipe Sass"
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| 1 | J-A formulation: A finite element methodology for simulating superconducting devices显示文摘High‐temperature superconductors are a powerful technological option to be applied in the current scenario of energy transition.Their applications include fault current limiters,power electrical cables,and electrical machines,for example.Due to the non‐linearities of superconductors,it is computationally costly to run real models of superconducting equipment.Therefore,it is of paramount importance to have a reliable and fast formulation to model superconducting devices.This paper proposes a new hybrid J‐A formulation to simulate superconducting devices.The new formulation is validated with 5 case studies,some of which are benchmarks.The J‐A formulation agrees in all cases and has a smaller computation time when compared with the T‐A formulation.Moreover,due to the simple implementation,the proposed formulation allows the possibility of running the J and A formulations in the same order and presents itself as a potential feature to speed up and help the design of the superconducting devices. | Gabriel dos Santos Bárbara Maria Oliveira Santos Felipe Sass Flávio Goulart dos Reis Martins Guilherme Gonçalves Sotelo Rubens de Andrade Junior | 2023 | Superconductivity2023，，2： | 0 |
| 2 | A review of superconducting fault current limiters compared with other proven technologies显示文摘Several substations in operation were commissioned decades ago.These substations are overstressed,then their protection equipment cannot provide an effective safety condition to the system.In the worst cases,short‐circuits can cause permanent damage to the system if the overcurrent is higher than the capacity of the installed equipment.There are some possible solutions for those cases:replace all the equipment in the overstressed substation,build a new one in parallel or install a fault current limiter(FCL)device.From an economic point of view,introducing FCLs in the power system is the best way to solve the described problem.The commercial solutions available are the pyrotechnic FCL,air coil reactor,neutral earthing resistor,and high impedance transformer.However,these devices are limited and present several drawbacks.Since the’70s,there has been a search for reliable FCL devices that do not interfere in the regular operation of substations and could limit the fault currents to the protection system rated level.There were so many FCL technologies proposed in the last decades.These proposed new devices may use superconducting technologies,power electronics,or both.This paper reviews proven FCL technologies,focusing on full‐scale devices demonstrated in field and lab tests.The goal is to introduce the main FCL technologies in development and discuss didactically their operation principle,the built prototypes,the commercial units,whether they exist,and the main drawbacks for each technology presented.A final analysis of the level of maturity for each FCL technology is discussed using the TRL(Technology readiness level)scale in order to find technologies with more potential for mass production.The three technologies closer to the full commercial application are:the Resistive Superconducting FCL,the Saturated Iron Core FCL,and the Series Reactor FCL. | Guilherme Gonçalves Sotelo Gabriel dos Santos Felipe Sass Bruno Wanderley França Daniel Henrique Nogueira Dias Marcio Zamboti Fortes Alexander Polasek Rubens de Andrade Jr. | 2022 | Superconductivity2022，，3： | 0 |
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