| 摘要 |
PURPOSE:To provide a method for determining the coupling flux vector of a three-phase voltage inverter for driving servo motors, wherein the instantaneous spatial coupling flux vector, with the motor stator winding, makes traces as circular as possible, for the purpose of smoothly rotating an a.c. servo motor using a three-phase voltage PWM inverter as power supply. CONSTITUTION:A coupling flux vector command is obtained from a three-phase voltage command, determined for each sample of current through a motor cycle by cycle. The output time of each selected voltage vector is equally divided into 1/k for each cycle. The output pattern of the coupling flux vector, the product of voltage vector and its output time, is repeated k times within each cycle. |
