The invention discloses a filtering
reactance level and a variable frequency driving
system using same. The variable frequency driving
system using the filtering
reactance level comprises a rectifying input level, an
inverter output level and a filtering
reactance level. The filtering reactance level which is coupled between the rectifying input level and the
inverter output level and comprises a
magnetic core module, a first winding group, a second winding group and a third winding group. The
magnetic core module comprises a
middle column, a first edge column and a second edge column. The first winding group is wound on the first edge column, the second winding column is wound on the second edge column, and the first winding group and the second winding group are in series connection with a first
direct current arm which is arranged between the rectifying input level and the
inverter output level. The third winding group is wound on the
middle column and two ends of the third winding group are in series connection with a second
direct current arm between the rectifying input circuit and the inverter output circuit. The three winding groups of the filtering reactance level are capable of supplying enough common mode
choke to restrain common mode currents and form adjustable different mode
inductance to reduce
energy loss of a filtering reactance.