| 摘要 |
Vector control system for asynchronous motor with cage-rotor, fed by a width-modulated pulse generator (MLI), comprising means for evaluating, relative to a fixed reference, the modulus ( phi r) and the phase ( rho ) of at least one of the fluxes ( phi r) in the motor, means for evaluating first, phase (Id) and quadrature (Iq) components, relative to the said flux ( phi r), of at least one current (Is) supplied to the motor (M). This system further comprises means (REG) of determining second, phase (Ud) and quadrature (Uq) components, relative to the said flux ( phi r) in the motor, defining a control voltage (Us), as a function at least of the said first components (Id, Iq) and of a requested torque value ( phi rcons, Iqcons), as well as means (CONV) for converting the said second components (Ud, Uq) into a corresponding polar representation comprising a modulus (Mod) and an argument ( alpha cons), with a view to controlling the pulse generator (MLI). …<IMAGE>… |
