In this paper, a novel variable-leakage-flux interior permanent magnet (VLF-IPM) motor is proposed, which kind of mechanical flux-adjusting PM motor. The VLF-IPM can obtain the advantages IPM and overcome difficulty to adjust airgap flux by locating self-activating device that introduced in paper on rotor. effect barriers leakage circuit analysed establishing rotor parametric model clarify infl...

A design package is developed for a single-tooth per stator pole switched reluctance motor, 6/4. The rather simple assumed flux path method is used to estimate the unaligned permeance including the leakage permeances and the effects of shallow slot and tooth taper. The possibility of making rotor tooth width greater than stator tooth width is examined using the developed package. The result app...

A voltage-parameter map (VP-Map) is proposed for predicting the performance of electric vehicles (EVs) and hybrid EVs (HEVs), which varies with respect to parameters in a variable load flux-weakening range, determining design parameters. Through this, maximum torque that can be generated at speed, input current generation rated torque, whether vehicle operable light are predicted, suitable 120-...

Brushless dc motors are widely used in many industrial applications due to their high efficiency, high power density and ease of control. In this paper, sensorless direct torque control (DTC) of bldc motor is implemented using fuzzy logic. In actual DTC both torque and stator flux linkage is controlled. In the proposed system, the control of stator flux linkage is avoided because every commutat...

The Hybrid Flux Observation Model (HFOM) is frequently employed in induction motor flux observers to ensure accurate and dynamic responses over the entire speed range. Nevertheless, voltage model, designed stationary reference frame, susceptible integral saturation drift issues. These problems lead diminished estimation accuracy compromised performance when conventional HFOM utilized. To mitiga...

A field modelling approach is presented exploiting approximate magnetic flux distributions. The method is an extension of flux-tubes and tubes-and-slices techniques. A combination of an equivalent magnetic circuit approach with improved description of relevant flux paths allows for a computationally efficient algorithm suitable for design optimization. The method is illustrated using an example...

Novel induction motor control optimizing both torque response and efficiency is proposed in the paper. The main contribution of the paper is a new structure of rotor flux observer aimed for the speed-sensorless operation of induction machine servo-drive at both, low and high speed, where rapid speed changes can occur. The control differs from the conventional field-oriented control. Stator and ...