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In this paper, a sensorless control scheme using improved stator flux estimator for high speed induction motors has been proposed to compensate a Programmable Low Pass Filter. This paper has analyzed the affect between the estimated speed error and the phase error of the stator flux in high speed range. The estimated speed error compensation scheme has also proposed. The validity of the proposed schemes...
In this paper, the improved stator flux estimator has been proposed to ensure a Programmable Low Pass Filter (PLPF) to act as a pure integrator for sensorless control of induction motors. In a conventional PLPF, the estimated synchronous angular speed is used as a cutoff frequency of a PLPF whose gain and phase compensator is determined on the assumption of the estimated synchronous angular speed...
The reliability of the PMSM drives is the one of critical factors in several industries, in particularly, the areas where the precise operation and/or high performance are required. This paper proposes a novel diagnosis scheme using Extend Kalman Filter (EKF), especially, in subject to the open-phase faults of the inverter switches. The stator resistances of PMSM are estimated by the EKF in real time...
The reliability of PMSM drives has been dealt with an important factor in industrial applications requiring a precise operation and high-performance. This paper proposes the fault diagnosis for open-phase faults of PMSM drives using an Extended Kalman Filter (EKF) and DC-link current information. The proposed fault diagnosis can be achieved without additional devices and distinguish where the open-phase...
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