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The objective of this paper is to develop a high power density PM motor for the strict dimension applications. Halbach array which has potential to offer high air-gap flux density and concentrated windings which has short winding end regions are considered. The discrete Halbach array and concentrated windings configurations are introduced first. Then feathers of air-gap flux density in discrete Halbach...
The objective of this paper is to present a series of novel doubly salient electromagnetic generator (DSEG) with multiple rotor poles for direct driven wind turbine. The 6k/4k-pole DSEGs are restricted in direct drive wind power application for the constraint between stator pole number and rotor pole number. Recent work by the authors shows a series of DSEG which the rotor pole number is more than...
Direct torque control (DTC) is widely used for AC drives. Attempts to combine DTC with SVM have led to new ways. A new approach to DTC-SVM is presented in this paper, which combines ADRC and DTC-SVM principles within a simple and robust high performance drive. The design procedure and parameter regulation of ADRC in DTC-SVM is proposed. Simulation results indicate that the proposed approach is robust...
This paper proposes a novel line-to-line back EMF detection method for sensorless brushless DC (BLDC) motor drives. The actual phase back EMF signal can be indirectly obtained from the line-to-line back EMF. F function constructed based on line-to-line back EMF is calculated for commutation estimation. Compared to the traditional back EMF method, this scheme is simple to implement without the need...
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