| 摘要 |
PROBLEM TO BE SOLVED: To increase system power generation efficiency by bringing out the maximum power generation capability in each of the positive and negative DC power supplies even if a power generation capability differs between the positive and negative DC power supplies.SOLUTION: A neutral point clamping system inverter 5 (NPC inverter) is used as an inverter for converting a DC power to an AC, and the neutral point of the NPC inverter 5 is connected to that of a positive-side DC power supply 1P and a negative-side DC power supply 1N that are connected in series. Then, the NPC inverter 5 controls a sharing ratio of positive and negative powers of a DC circuit. |
