| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to easily set an arbitrary voltage value in controlling voltage applied to a load by switching connection states of first and second power supplies to the load, and easily make balance between charging and discharging for the first and second power supplies.SOLUTION: In the case of simultaneously driving first and second DC power conversion circuits 11, 12, a control device 15 can arbitrarily control first voltage VB1 and second voltage VB2, and load voltage V0 at least by changing any of first and second duties. The control device 15 generates loop current for discharging a first power supply BT1 and charging a second power supply BT2 or loop current for charging the first power supply BT1 and discharging the second power supply BT2, in a loop circuit LC composed of a first reactor L1 and second reactor L2 which are connected in series. |
