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Main contribution of this paper is an experimental verification of a new position control algorithm exploiting principles of forced dynamics control capable to operate in energy saving mode. To minimize energy loss a specified velocity-time profile based on prescribed maneuver time is computed to achieve prescribed dynamics for demanded reference position. Settings of the velocity-time profile parameters...
This paper presents an approach for vector control of IPM synchronous motor without position transducer, applicable for low cost PMSM drives with unpredictable load and inertia. To achieve correct drive operation from zero speed, two different techniques are combined with crossover function, based on the speed reference. The rotor initial position is determined prior the control action, for the drive...
In this paper a position and speed estimation method without position transducer is presented. This method is applied for horizontal axis washing machines with permanent magnet synchronous motor (PMSM). By integrating methods, i.e. using a speed reference for zero speed startup and low speed acceleration, and back-EMF for mid-high speed operation, the rotor position can be estimated and controlled...
This paper presents a complex solution for whole speed range sensorless control of interior permanent magnet synchronous motor (IPMSM) drives. To cover an entire speed range of IPMSM without position transducer, different sensorless techniques must be employed. Design and implementation of sensorless techniques for different operating speeds are described in this paper. Presented application has been...
The paper deals with real-time estimation of PMSM rotor position, which is based on the new, virtual HF injection signal method. The main idea of that is subtraction of virtual injection voltage from real stator voltage. This voltage is acting on PMSM model and causes a virtual current response. After subtraction of acting model current from measured real stator current we obtain the virtual HF injection...
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