| 摘要 |
PROBLEM TO BE SOLVED: To enable stable brake control without enlarging a power generation brake resistance value by preventing the inflow of the power from an aerial line at power generation brake control. SOLUTION: This driver is so arranged that power is not made to flow in from a DC power source during power generation brake control by connecting a diode 17 in parallel in the direction shown in the figure to the current breaker 5 for cutting off an inverter for driving motors 91-94 from a DC power source. What is more, when regenerated load increases during power generation brake control, it is possible to switch it continuously over to regeneration control. |
