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Conventional direct torque control (DTC) for permanent magnet synchronous motor (PMSM) has some shortcoming of more torque fluctuation, current fluctuation and inconstant switching frequency. Through an analysis of surface mounted permanent magnet synchronous motor (SPMSM), a new DTC-SVM (space vector modulation) method with a flux observer based on rotor position and current model, fast reference...
A difficult challenge in hybrid electric vehicles (HEVs) and full electric vehicles (EVs) is the torque control of externally excited synchronous machines (EESMs). Effective torque control requires an efficient solution to the state reference generation problem, which is a nonlinear non-convex optimization problem. The goal of this paper is to develop a state reference generation algorithm based on...
In this research, a Fuzzy Logic Direct Torque Control (FLDTC) based on stator flux-oriented and machine's relation and equations with voltage and current of both stators have been introduced. Initially, paper focuses on BDFM concept and development of it. The synchronous mode operation of BDFM will be studied, and then by introducing the d-q coordination, the dynamic equation of BDFM will be represents...
This paper presents an effective switching state algorithm for flux and torque ripple minimization in direct torque control (DTC) of three phase induction motor drives. Proposed switching state algorithm gives an optimum flux and torque ripple at steady state condition and fast dynamic torque response. This control strategy is applied to three-level configuration using cascaded two two-level inverters...
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