Hi, I am building a pulse forming network (image of equivalent circuit as attached).
The repeating units of capacitors and inductors form an artificial transmission line. Each capacitor is initially charged up to 360 V, with a capacitance of 0.003 F and ESR of 20 mΩ. Each inductor has an inductance of 0.416991 µH with an ESR of 1.34 mΩ. I would like to simulate this from t=0 (closing of the switch) to t=0.0032 s.
The characteristic impedance of the line is 11.79 mΩ.
The load (represented by the series connection of 'R' and 'L', has a resistance of 4.147178 mΩ and parasitic inductance of 2.97 µH. Due to an impedance mismatch between the load and the artificial transmission line, I am going to use a coaxial, air core pulse transformer to minimize the mismatch.
The objective is to simulate the current through inductor (Ls) as a function of time.
However, the simulation has returned strange results and the results are as described:
1. the current flowing through the primary winding Lp is 51 kA and is much higher than an initial calculated value of 16 kA
2. despite a coupling coefficient of 0.9 between the transformer windings, the current through the secondary (Ls) is less than 1 mA.
May I know if there is anything that can be done to fix this problem?
I have also attached the circuit schematic in this post.
The repeating units of capacitors and inductors form an artificial transmission line. Each capacitor is initially charged up to 360 V, with a capacitance of 0.003 F and ESR of 20 mΩ. Each inductor has an inductance of 0.416991 µH with an ESR of 1.34 mΩ. I would like to simulate this from t=0 (closing of the switch) to t=0.0032 s.
The characteristic impedance of the line is 11.79 mΩ.
The load (represented by the series connection of 'R' and 'L', has a resistance of 4.147178 mΩ and parasitic inductance of 2.97 µH. Due to an impedance mismatch between the load and the artificial transmission line, I am going to use a coaxial, air core pulse transformer to minimize the mismatch.
The objective is to simulate the current through inductor (Ls) as a function of time.
However, the simulation has returned strange results and the results are as described:
1. the current flowing through the primary winding Lp is 51 kA and is much higher than an initial calculated value of 16 kA
2. despite a coupling coefficient of 0.9 between the transformer windings, the current through the secondary (Ls) is less than 1 mA.
May I know if there is anything that can be done to fix this problem?
I have also attached the circuit schematic in this post.
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