A kind of IGCT anode current detecting device and method based on Rogowski coil
A Rogowski coil and anode current technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of over-rated current, IGCT current increase, and turn-off delay when turned off, so as to achieve less delay, The effect of high reliability and low cost
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Embodiment 1
[0079] as attached figure 1 As shown, a specific embodiment of an IGCT anode current detection device based on a Rogowski coil, the IGCT includes a GCT 100 and a gate drive unit 2, and the IGCT anode current detection device includes:
[0080] Rogowski coil 1 arranged at the interface between door drive unit 2 and GCT 100;
[0081] The current detection circuit 4 installed on the gate drive unit 2 is connected to the Rogowski coil 1. When the current detection circuit 4 detects that the anode current of the IGCT is overcurrent, the gate drive unit 2 sends a shutdown signal to the GCT 100 .
[0082] as attached figure 2 Shown is a schematic diagram of the connection structure between the door drive unit 2 and the GCT 100 . The GCT 100 is packaged inside the tube case 13, the gate 14 of the GCT 100 is connected to the door drive unit 2 through a guide bar, the cathode comb of the GCT 100 is crimped with one end of the shell of the GCT 100 as the cathode 12 of the IGCT, and i...
specific Embodiment
[0090] A specific embodiment of an IGCT anode current detection method based on a Rogowski coil, the IGCT includes a GCT 100 and a gate drive unit 2, and the IGCT anode current detection method includes the following steps:
[0091] S101) Arranging the Rogowski coil 1 at the interface between the door drive unit 2 and the GCT 100;
[0092] S102) A current detection circuit 4 is set on the door drive unit 2, and the current detection circuit 4 is connected to the Rogowski coil 1;
[0093] S103 ) When the IGCT is working, the current detection circuit 4 detects that the anode current of the IGCT is overcurrent, and the gate drive unit 2 sends a shutdown signal to the GCT 100 .
[0094] At the same time, the gate drive unit 2 is integrated with the gate 14 and cathode 12 of the GCT 100 so that the IGCT anode current runs through the interface of the gate drive unit 2 and the gate drive unit 2 and the cathode 12 maintain the same potential.
[0095] In step S103), the detection p...
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