Peppe Messina Sicilymylove | ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (original) (raw)
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Papers by Peppe Messina Sicilymylove
High temperature superconducting (HTS) coils of different shapes (typically circular or trapezoid... more High temperature superconducting (HTS) coils of different shapes (typically circular or trapezoidal) wound on iron or ironless core are fundamental components of many superconducting electrical power devices. A 150-turn (75 turns/pancake) trapezoidal coil in double pancake configuration has been designed and realized in our laboratory of ENEA Frascati. Various epoxy resins and YBCO tapes have been tested in the temperature range room to liquid nitrogen, leading us to the choice of AmSC (American SuperconductorⓇ) tape for the winding and araldite resin for the impregnation process. The trapezoidal shape has been chosen because of its suitable geometry for practical applications, the results being complementary to what was previously achieved on
round shapedHTS coils.The AC transport current losses have beenmeasured using a compensated electricalmethod and expressed in terms of a linearly frequency dependent resistance. A linear dependence of the losses resistance fromfrequency was expected and found in agreement with previous results. The current-voltage curve has been measured in zero externally applied field condition, the results being in good agreement with a numerical simulation. The magnetic field distributions, at different air gaps from coil top and zero externally applied filed condition, have been simulated and reported as well.
In this study, YBCO based commercial wire (tape) has been used for fabricating coils in doubled p... more In this study, YBCO based commercial wire (tape) has been used for fabricating coils in doubled pancake configuration assembly. The tape has been wound on a circular shaped support, lap joints between coils have been realized with particular attention to resistance minimization. Each HTS coil by itself, and the assembly afterwards, has been powered and the currentvoltage curves at different temperatures have been measured using a four-probe technique. Critical currents have been computed by using the electric field criteria. Applied magnetic field was both in perpendicular and parallel configuration. A magneto-static finite element model has been developed, by using commercial software, in order to check the agreement with experimental results. Index Terms-YBCO, coated conductor, energy storage.
High temperature superconducting (HTS) coils of different shapes (typically circular or trapezoid... more High temperature superconducting (HTS) coils of different shapes (typically circular or trapezoidal) wound on iron or ironless core are fundamental components of many superconducting electrical power devices. A 150-turn (75 turns/pancake) trapezoidal coil in double pancake configuration has been designed and realized in our laboratory of ENEA Frascati. Various epoxy resins and YBCO tapes have been tested in the temperature range room to liquid nitrogen, leading us to the choice of AmSC (American SuperconductorⓇ) tape for the winding and araldite resin for the impregnation process. The trapezoidal shape has been chosen because of its suitable geometry for practical applications, the results being complementary to what was previously achieved on
round shapedHTS coils.The AC transport current losses have beenmeasured using a compensated electricalmethod and expressed in terms of a linearly frequency dependent resistance. A linear dependence of the losses resistance fromfrequency was expected and found in agreement with previous results. The current-voltage curve has been measured in zero externally applied field condition, the results being in good agreement with a numerical simulation. The magnetic field distributions, at different air gaps from coil top and zero externally applied filed condition, have been simulated and reported as well.
In this study, YBCO based commercial wire (tape) has been used for fabricating coils in doubled p... more In this study, YBCO based commercial wire (tape) has been used for fabricating coils in doubled pancake configuration assembly. The tape has been wound on a circular shaped support, lap joints between coils have been realized with particular attention to resistance minimization. Each HTS coil by itself, and the assembly afterwards, has been powered and the currentvoltage curves at different temperatures have been measured using a four-probe technique. Critical currents have been computed by using the electric field criteria. Applied magnetic field was both in perpendicular and parallel configuration. A magneto-static finite element model has been developed, by using commercial software, in order to check the agreement with experimental results. Index Terms-YBCO, coated conductor, energy storage.