| 摘要 |
PROBLEM TO BE SOLVED: To provide a reactor device that can make the power factor of an input current high and can be made compact since only one transformer where a main circuit current flows is required with a simple feedforward control configuration only for detecting an input voltage.SOLUTION: A reactor device includes a voltage detection circuit 3 which detects an output voltage of a rectification device and outputs the detected voltage, a filter circuit 4 which extracts an AC component from the detected voltage, a voltage amplification circuit 5 which amplifies the AC component of the detected voltage, and a transformer 6 which has its main winding 9 connected to a DC bus 100 and its auxiliary winding 10 connected to an output side of the voltage amplification circuit 5. The voltage amplification circuit 5 detects a current flowing to the main winding 9 by detecting a current flowing to the auxiliary winding 10, controls the current flowing to the auxiliary winding 10 according to the level of the current flowing to the main winding 9, and generates an AC voltage substantially equal to the AC component of the output voltage of the rectification device between terminals of the main winding 9. |
