| 摘要 |
<p>The invention relates to an installation for the active protection of the superconducting coil in superconducting motors, with application in superconductivity. According to the invention, the installation comprises a power module (M1), a logic sequence programming module (M2) and a stabilized voltage sources module (M3); the power module (M1) consists of two electronic switches (IGBT) made with two high-power transistors (T1, T2) and a discharge resistor (R) having the role of taking over the energy stored in a superconducting coil (L) made of two identical serially-connected superconducting sections (L1, L2), in order to carry out a pair of rotor poles of the superconducting motor, the first switch consisting of the transistor (T1) allows the supply of the superconducting coil (L) from the power voltage source, under normal operation conditions, as well as the disconnection of the power voltage source when at least one of the two coils (L1, L2) is normalized, while the second switch consisting of the transistor (T2) allows the connection of the superconducting coil (L) to the discharge resistor (R) when at least one of the serially-connected coils (L1 or L2) is normalized; the programming module (M2) comprises an operational amplification block with galvanic insulation, a precision electronic amplification block and an electronic amplification block having the role of gradually amplifying the analogue signal from the output of the operational amplifier with galvanic insulation; the stabilized voltage sources module (M3) comprises some differential voltage sources.</p> |
