The paper describes development of a new energy saving control algorithms for precise position control of permanent magnet synchronous motor. Designed control algorithms limit energy consumption for defined rotor position maneveur, increase efficiency of the drive and contribute to the substantial improvements of environment. Overall position control system consists of three parts. As the first part, the ‘minimum energy generator’ computes a special acceleration, velocity and position profile, where the magnitude and time of acceleration or deceleration are determined such a way that comply with position demand and prescribed time for position maneuver. The role of ‘feed-forward precompensator’, as a second part, is to achieve precise tracking of the prescribed reference position with zero dynamic lag. Third part is position controller, which can be based on field oriented control, forced dynamics control or sliding mode control. Developed ‘energy saving control algorithms’ are easy to implement digitally and can be exploited for position control of existing a.c. drives.ENERGY-SAVING POSITION CONTROL OF A PERMANENT MAGNET SYNCHRONOUS MOTOR (PMSM) CONSIDERING COULOMB FRICTION
The article describes the determination of new energy-saving control algorithms for precise position control of a permanent magnet synchronous motor.
The designed control algorithms limit energy consumption for a specific rotor position maneuver, increase drive efficiency, and contribute to significant environmental improvements. In general, the position control system consists of three parts. As the first part, the “minimum energy generator” calculates specific acceleration, velocity, and position profiles, where the magnitude and time of acceleration or deceleration are determined in such a way that they comply with the required position and the time prescribed for the positioning maneuver. The role of the “feed-forward precompensator,” as the second part, is to achieve precise tracking of the prescribed reference position with zero dynamic lag. The third part is the position controller, which can be based on field-oriented control, forced dynamics control, or sliding mode control. (…)
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Source: Logistyka Magazine
Energy saving pmsm position control respecting coulomb friction – PDF file for download