| Abstract |
Direct torque control (DTC), which is one type of PMSM drive system, can realize maximum-torque-per-ampere (MTPA) control and flux-weakening control by yielding an optimum target magnetic flux. In this paper, we propose armature reaction flux control that can achieve flux weakening control for PMSM control systems using DTC. Our proposed control focuses on the equivalence of the reactive power, which is an inner product of the stator magnetic flux vector and a current vector. To achieve flux-weakening control, the proposed control corrects the reference flux to shift the current phase to produce the desired stator voltage. The effectiveness of the proposed control is experimentally confirmed. |
