Two-dimensional calculation of inductances of the coupled helical coils. Calculation HEMG with capture of a magnetic flux

The paper presents the technique and results of 2-D computations for inductance and mutual inductance of coaxial helical coils As well as in the paper [1], the equation ΔA =-J is solved. The inductances are computed as the ratio of the flux linkage with coil turns to the current in the helix, giving rise to this flux generation. Accordingly, proper L and mutual M of inductance are possible. The computations were performed for a helical EMG with flux input into the main helix from the coupling coil. The computed L(t) and M(t) are used to solve the system of differential equations describing the EMG operation starting from the discharge of the capacitor bank onto the coupling coil to the operation of the opening switch transferring the current into the load from the main coil loop.