An Experimental Study of the Inductance Parameters of a Smoothing Filter Reactor with a Completely Closed Magnetic Flux

Resumo

The use of advanced structural concepts for development of electric power equipment of dc traction power supply systems allows one to triple the power density per unit volume. An armored rod radial–cylindrical magnetic system with massive nonlaminated design elements, which is split into sections by nonmagnetic gaps, allows one to provide high mechanical strength without using additional fasteners and pressing elements. This design also provides an admissible level of hysteresis and eddy current losses, as well as meeting the requirements for unconditional linearization of a magnetic flux in the range of working currents. The latter is caused by the performance of smoothing reactors as parts of high-power rectifiers that feed rolling stock.