| 摘要 |
An apparatus controls a power converter of an AC motor drive system, the power converter outputting multi-phase AC current to an AC motor. The apparatus comprises: a state selecting unit; and an advanced controller. The state selecting unit selects an operation mode, from among a plurality of operation modes, for the AC motor based on system real-time operating conditions, the plurality of operation modes including a normal mode, a power interruption mode, a fault protection mode, and a power-up/down dynamic mode. The system operating conditions include DC voltage available to the power converter, motor load condition, and motor speed command. The advanced controller controls multi-phase AC current output from the power converter to the motor in accordance with the operation mode selected by the state selecting unit. The advanced controller generates a current control reference value that is based on the selected operation mode to achieve current control under various operating conditions of the motor drive system.
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