| 摘要 |
A container crane driving control system having a main hoisting mode, a travel mode, a boom hoisting mode and a trolley mode comprises a first inverter main circuit unit, a first inverter control unit, a second inverter main circuit unit and a second inverter control unit. The first inverter main circuit unit is selectively controlled by a first V/F constant-control circuit or a first vector control circuit. As a result, a main hoisting squirrel-cage induction motor is vector-controlled and a plurality of traveling squirrel-cage induction motors are V/F constant-controlled. The second inverter main circuit unit is selectively controlled by a second V/F constant-control circuit or a second vector control circuit. As a result, a boom hoisting squirrel-cage induction motor is vector-controlled and at least one trolley squirrel-cage induction motor is V/F constant-controlled.
|
