brushless machines
Permanent-magnet brushless machines with unequal tooth widths and similar slot and pole numbers
... permanent-magnet brushless machines, nonoverlapping stator windings are often employed since they result in shorter end windings and, hence, a lower copper loss and a shorter overall axial length [1], ...in ...
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Eddy-current loss in the rotor magnets of permanent-magnet brushless machines having a fractional number of slots per pole
... T HE eddy-current loss that is induced in the permanent magnets of brushless machines is often neglected [1]. However, this assumption may not always be justified. For example, machine designs are emerging ...
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Sensorless flux-weakening control of permanent-magnet brushless machines using third harmonic back EMF
... Fig. 1 shows a schematic of a permanent-magnet brushless drive with Y-connected resistors to enable the third harmonic component of the back EMF to be sensed. In the literature, three methods for obtaining the ...
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Split ratio optimisation of high-speed permanent magnet brushless machines considering mechanical constraints
... A The split ratio of rotor outer diameter to stator outer diameter is one of the most important design parameters due to its significant impact on machine torque density and efficiency. It has been optimized analytically ...
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Torque-ripple minimization in modular permanent-magnet brushless machines
... modular machines have a sinu- soidal back-EMF waveform, so that the current controller is re- quired to track a set of sinusoidal current commands propor- tional to a given torque ...
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Rotor resonances of high-speed permanent-magnet brushless machines
... high-speed machines, in particular, it is very im- portant to accurately predict natural frequencies of the rotor at the design stage so as to minimize the likelihood of ...permanent-magnet brushless motor, ...
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Analytical Modeling of Magnetic Field Distribution in Inner Rotor Brushless Magnet Segmented Surface Inset Permanent Magnet Machines
... rushless permanent magnet motors are interested in industrial applications due to their high efficiency and power density [1-3]. Magnet segmentation is an effective and simple technique for cogging torque reduction in ...
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Dynamic Performance Prediction of Brushless Resolver
... In this paper, a brushless resolver was analyzed. Its dynamic and steady state equivalent circuits were presented for the first time. Proposed model is taking the eccentricity effect (By using different parametric ...
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A Review of Brushless Motor Control Techniques
... The only limitation which was holding back the adoption of FOC was that the transformations that needed to be processed requires a lot of computation power and was difficult to implement as well. These days, ...
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Regenerative Braking of Brushless DC Motor
... When brushless PM motor is forward driving in half bridge modulation mode, six-step 120 drive scheme is used, that is, two- phase power devices which belong to high bridge arm and low bridge arm of the inverter ...
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Design for Manufacture of a Brushless Synchronous Servomotor
... There are a number of research activities mainly on the large PMSMs currently being undertaken in the Nordic countries (Krovel et al., 2004). In these works special attention is been given to the axial and transverse ...
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Strain gauge, brushless torque meter
... line and spaced apart, said input and output shaft means having first and second spaced apart flanges thereon respectively having a face substantially perpendicular to the center line of[r] ...
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EXCAVATOR MONITORING SYSTEM USING SMART PHONES
... these machines are having more than one ...these machines, it is not possible that the owner of those machines will be present at both machines at a time and he is not able to supervise the ...
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Self-Replication and Self-Assembly for Manufacturing
... nanoscale machines floating in a virtual liquid. The machines can bond together to form strands (chains) that self-replicate and self-assemble into user-specified ...of machines and the sequence of ...
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Differing-Inputs Obfuscation and Applications
... Turing machines have already been defined by Goldwasser et ...Turing machines we restrict the adversary to make only certain type of function queries which is based on the running time of the ...
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Self-Replicating Strands that Self-Assemble into User-Specified Meshes
... of machines, in contrast with two types in JohnnyVon ...bonded machines is acting as a genotype, it forms a straight line (ignoring random perturbations from Brownian ...free machines become scarce, ...
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Power-efficient Assignment of Virtual Machines to Physical Machines
... A generalization of the above problem is studied by Gupta, Krishnaswamy, and Pruhs in [25]. The question addressed is how to assign jobs, possibly fractionally, to unrelated parallel machines in an online fashion ...
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Killing machines
... In this section I will explore two basic reasons why the idea of video-game actions being morally significant may be ignored; firstly the idea that the entities that players are acting a[r] ...
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-structures Applied to Finite State Machines
... Fuzzy automata theory have supported a wealth of impor- tant applications in many fields. In this paper, the concepts of N -finite state machine have been generalized by substituting the interval [-1,0] and studied some ...
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ACP: Yearbook of foreign trade statistics 1968-1976/ACP: Annuaire des statistiques du commerce exterieur
... HACHINES GENERATRIC ES,SAUF MAC HINES ELEC MACHINES ET APPAREILS AGRIC OLES MACHINES OE BUREAU HACHINES PUUR LE TRAVAIL DES HETAUX MACHINES POUR INDUST.TEXT,C UIRS ET PEAUX MACHINES POUR[r] ...
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