Annular closed magnetic field air-core reactor

The invention provides an air-core reactor. The air-core reactor comprises a first coil, a second coil and insulating supporting pieces, wherein the first coil and the second coil are installed on theinsulating supporting pieces. The air-core reactor is characterized in that the first coil is a semi-circular-ring-shaped coil wound in a left spiral direction, the second coil is a semi-circular-ring-shaped coil wound in a right spiral direction; and the first coil and the second coil are connected in parallel to be combined into a closed circular-ring-shaped reactor coil. The air-core reactor does not cause electromagnetic pollution to the surrounding environment; the impedance value of the reactor is stable; the voltage and current of the reactor are in a linear proportional relation; andnoise pollution to the environment is small. 本发明提出了一种空心电抗器，包括第一线圈、第二线圈、绝缘支撑件。所述第一线圈和第二线圈安装在绝缘支撑件的上方，其特征在于：所述第一线圈为左螺旋方向绕制的半个圆环形形状的线圈，所述第二线圈为右螺旋方向绕制的半个圆环形形状的线圈，所述第一线圈和第二线圈并联连接组合成一个封闭的圆环形电抗器线圈。本发明的空心电抗器不会对周围环境产生电磁污染，电抗器的阻抗值稳定，电压与