DSP based Implementation of Vector Control Scheme for Permanent Magnet Synchronous Motor Drive

This paper presents an analysis and hardware implementation of a Vector Control (VC) scheme for Permanent Magnet Synchronous Motor (PMSM) drive using a motion control digital signal processor. The vector controlled PMSM drive system is implemented using minimum number of hardware components. The developed PMSM drive system consists of power circuit, control hardware and software. Power circuit consists of insulated gate bipolar transistor (IGBT) based voltage source inverter (VSI) and gate driver circuit. The control hardware consists of power supplies, resolver demodulation circuit, current sensors and interfacing circuits. The reference speed, rotor speed estimation using sensed position signals, speed controller, reference frame transformation, vector controller and PWM current controller for gating pulse generation of VSI are implemented in assembly language of DSP-ADMC401. The simulation model of the drive system is developed in MATLAB environment with simulink and PSB toolboxes to analyze the performance of the proposed drive system. The simulated performance alongwith test results of the PMSM drive are studied for starting, steady-state condition, speed reversal and load perturbation.

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