| 摘要 |
PROBLEM TO BE SOLVED: To provide a high frequency current reduction device and a detection transformer that effectively reduce common mode currents and normal mode noise currents.SOLUTION: A high frequency current reduction device 100 includes a detection transformer 1, a filter device 2, a voltage amplifier 3 and voltage application means 4. The detection transformer 1 has main windings 11-13, a common core 15 on which the main windings 11-13 are wound, a leakage flux core 16 arranged inside the common core 15 to separate the main windings 11-13, and a detection winding 14 wound evenly on the common core 15 to detect currents flowing through the main windings 11-13. Normal mode currents flowing through the main windings 11-13 generate magnetic fluxes in the leakage flux core 16 to provide inductances to the normal mode currents. The normal mode currents and common mode currents flowing through the main windings 11-13 generate a magnetic flux in the common core 15 to provide inductances to the common mode currents. |
