| 摘要 |
PURPOSE:To prevent a vector axis from displacing at the transiently varying time by arbitrarily delaying a phase via a response delay circuit in a vector control system of a current inverter. CONSTITUTION:In a transfer function of a current control amplifier 12, a transfer function of leading compensation is 1+(R2+R3)C2.S, and an integrating function is 1/R1.C1X1/S, where the transfer function Kp of the phase controller is designated by 13 and electric time constant is designated by 14. The amplitude I1 of the primary current from a converter 15 is fed back to an amplifier 12 through a transfer function Fi. The vector relation between the actual primary current I1 and the relative phase angle phi is not broken by arbitrarily delaying the phase by the transfer function of the amplifier 12. |
