Three-phase alternating-current adjustable reactor and harmonic suppression device

The invention relates to a three-phase alternating-current adjustable reactor and a harmonic suppression device, and belongs to the technical field of power system automation. The harmonic suppression device comprises a three-phase alternating current adjustable reactor, a current sensor, a controllable rectifier and a controller, wherein the three-phase alternating current adjustable reactor comprises an iron core, a control coil and three working coils; the iron core comprises three vertical magnetic core columns and two horizontal magnetic core columns; the control coil is wound on the horizontal magnetic core columns; each working coil is wound on the corresponding vertical magnetic core column of the iron core, and each working coil is connected to a power grid where a nonlinear load is located; the current sensor is arranged on the nonlinear load side in the power grid; the direct current side of the controllable rectifier is connected with the two ends of the control coil, and the alternating current s