| 摘要 |
FIELD: electricity. ^ SUBSTANCE: invention refers to electric engineering. Control method for each variable frequency drive involves supply of value of excitation current component to master controller and receiving the required speed, required flow and averaged value of excitation current component from master controller. Control method involves determination of motor speed and motor flow based on measurements of stator voltage and motor current, which is connected to variable frequency drive, determination of reference speed value based on value of torque moment current component, and determination of reference flow value based on value of excitation current component and averaged value of excitation current component. In addition, control method controls component of torque moment current based on reference speed value and/or there controlled is excitation current component based on reference flow value. ^ EFFECT: development of effective method for parallel control of variable frequency drives. ^ 20 cl, 5 dwg |
