Weighted higher-order proportional-integral current regulator for synchronous machines

摘要

A permanent magnet synchronous machine is controlled according to a d-axis current command I_dse* and a q-axis current command I_qse* needed to achieve a desired response of the machine. An actual d-axis current I_dse and an actual q-axis current I_qse are sensed and an angular velocity _r of the machine is sensed. A d-axis voltage command V_dse* is determined using a first proportional-integral regulator responsive to a d-axis current error I_d, a q-axis current error I_q, and the angular velocity _r. The first proportional-integral regulator includes a first weighted higher order term comprising a product of a first weighting factor, the angular velocity _r, and the q-axis current error I_q. A q-axis voltage command V_qse* is determined using a second proportional-integral regulator responsive to the d-axis current error I_d, the q-axis current error I_q, and the angular velocity _r, wherein the second proportional-integral regulator includes a second weighted higher order term comprising a product of a second weighting factor, the angular velocity _r, and the d-axis current error I_d.