Configuration of the magnetic field in the near-Earth space is known to be the most important factor determining links between the magnetosphere and ionosphere such as thermal plasma flows, electric field mapping, solar particle trajectories, low-frequency electromagnetic wave and heat propagation. One of methods for constructing the magnetospheric magnetic field models implies using large amounts of spacecraft data which are sorted out in intervals of geomagnetic disturbance indices and/or solar wind characteristics. The obtained datasets are then used for least squares fitting parameters of functions which approximate contributions to the total field coming from the main mangetospheric B sources. This opens a possibility for studying the average dependence of geometry and intensity of the magnetospheric electric current systems on the ground activity level as well as on the solar wind state. Recent progress and future prospects in this area is reviewed and discussed.