| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress overshoot generated in a DC reactor without deteriorating voltage control precision in discharge control to a DC source such as an inverter DC section from a power capacitor. <P>SOLUTION: As control units of power choppers (4 and 5) boosting DC power of a power capacitor 6 and discharging power to an inverter 3 side, circuits 21 to 24 estimate transitional consumption current included in consumption current I flowing from the inverter 3 to an induction machine M side as instantaneous current (I_cap). Circuits 25 and 26 obtain continuous consumption current included in the consumption current as average current (I_keep) discharged from the power chopper to a DC section side. An addition value of the instantaneous current (I_cap) and average current (I_keep) is added to a current command value (I_up) from a voltage control system as an estimation value (I_con) of the consumption current on the inverter side to make it as a current command value of the current control system. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
