Journal of Applied Sciences

This paper proposes a device to reduce neutral line current based on the principle of magnetic flux compensation.The device achieves phase shifting through a specially designed magnetic circuit transformer with adjustable coils, generating magnetic fluxes of equal magnitude but opposite direction to counteract the harmonic-induced fluxes, thereby suppressing neutral line current.The circuit design of the neutral line current eliminator is introduced.Measurements conducted on actual engineering loads show that the harmonic current on the neutral line is reduced by more than 90%.