Abstract
This paper describes a new discrete-time PMSM model for discrete design of current vector control system. Discrete design of current control system is a via discrete-time PMSM model. This controller minimizes dis-cretization error and ensure perfect control performance at sampling point. Conventional discretization method presume park transformation runs continuously. When sampling frequency is too lower than fundamental electric frequency, this assumption is invalid and control performance will degrade by modeling error. In this paper, authors propose the method of PMSM model discretization in consideration of discrete-time park transformation. Simulation results show the effectiveness of proposed model.
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