Results 221 to 230 of about 1,734,199 (244)
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1961
Publisher Summary This chapter discusses the stator losses. Stator losses are similar in nature to those occurring in rotor blading. The decrease in fan efficiency as a result of the loss in total head as the air passes through the stators is, for an average case, of the order of 3%. Tip clearance losses can be avoided with proper sealing; as a result,
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Publisher Summary This chapter discusses the stator losses. Stator losses are similar in nature to those occurring in rotor blading. The decrease in fan efficiency as a result of the loss in total head as the air passes through the stators is, for an average case, of the order of 3%. Tip clearance losses can be avoided with proper sealing; as a result,
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2016
The chapter deals with stator winding faults. Assessments of different types of stator winding fault are discussed in this chapter. Both steady-state and transient current-based diagnosis are covered. Sequence component-based stator fault diagnosis is presented. Park plane is sometime used for fault diagnosis.
Samarjit Sengupta +3 more
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The chapter deals with stator winding faults. Assessments of different types of stator winding fault are discussed in this chapter. Both steady-state and transient current-based diagnosis are covered. Sequence component-based stator fault diagnosis is presented. Park plane is sometime used for fault diagnosis.
Samarjit Sengupta +3 more
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Time-Space Spectral Method for Rotor–Rotor/Stator–Stator Interactions
Journal of Turbomachinery, 2019AbstractThe paper presents a time-space spectral method for an efficient analysis of rotor–rotor/stator–stator interactions in the framework of the time spectral form harmonic balance method. The method treats time and space harmonics in a coherent way and allows for easy choice of time and passage through the introduction of pseudo-shaft frequency and
Dingxi Wang, Xiuquan Huang
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Electrical Engineering, 1932
A wound rotor induction machine may be given special characteristics by connecting the stator and rotor windings in parallel, either directly or through an auto-transformer. Pull-out torque, hp. output, and efficiency at large loads are increased for motor operation; and maximum kva. output is increased for operation as an induction generator.
A. G. Conrad, R. G. Warner
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A wound rotor induction machine may be given special characteristics by connecting the stator and rotor windings in parallel, either directly or through an auto-transformer. Pull-out torque, hp. output, and efficiency at large loads are increased for motor operation; and maximum kva. output is increased for operation as an induction generator.
A. G. Conrad, R. G. Warner
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1961
Publisher Summary This chapter discusses the stator design. Prerotators and straighteners can be treated in a manner similar to that used for rotor blades. A prerotator accelerates the air as it introduces a tangential velocity component, thus, producing a static pressure drop across the stator.
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Publisher Summary This chapter discusses the stator design. Prerotators and straighteners can be treated in a manner similar to that used for rotor blades. A prerotator accelerates the air as it introduces a tangential velocity component, thus, producing a static pressure drop across the stator.
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Stoichiometry and Turnover of the Stator and Rotor
2017Fluorescence imaging techniques using green fluorescent protein (GFP) and related fluorescent proteins are utilized to monitor and analyze a wide range of biological processes in living cells. Stepwise photobleaching experiments can determine the stoichiometry of protein complexes.
Yusuke V. Morimoto, Tohru Minamino
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Partitioned Stator Flux Reversal Machine With Consequent-Pole PM Stator
IEEE Transactions on Energy Conversion, 2015In this paper, partitioned stator flux reversal permanent magnet (PS-FRPM) machines having different stator/rotor pole combinations with consequent-pole PM (CPM) stator are proposed and analyzed. Compared with the conventional 12-stator-pole PS-FRPM machines having 10-, 11-, 13-, and 14-rotor-pole rotors and surface-mounted PM (SPM) stator, the PM ...
Zi-Qiang Zhu, Zhongze Wu
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Volume 6C: Turbomachinery, 2013
The rotor-stator interaction in a 1.5 stage compressor with different lean angle of downstream stator blades was investigated by aeroacoustic and numerical study. The aeroacoustic performance with narrow spectra, the sound pressure level distribution and the unsteady loading of the compressor were tested and analyzed. The RMS pressure, the axial thrust
Jie Tian +4 more
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The rotor-stator interaction in a 1.5 stage compressor with different lean angle of downstream stator blades was investigated by aeroacoustic and numerical study. The aeroacoustic performance with narrow spectra, the sound pressure level distribution and the unsteady loading of the compressor were tested and analyzed. The RMS pressure, the axial thrust
Jie Tian +4 more
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Comparative Study of Partitioned Stator Machines With Different PM Excitation Stators
IEEE Transactions on Industry Applications, 2016The partitioned stator (PS) machine adopts two stators to allocate windings and permanent magnets (PMs) separately, increasing the space for PMs as well as armature coils to boost the electromagnetic torque and improving the thermal condition of PMs. In this paper, the PS switched-flux PM (PS-SFPM) machine and the PS flux reversal PM (PS-FRPM) machine ...
Di Wu +4 more
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EFFECTS OF STATOR CLOCKINGINSYSTEMOF ROWS STATOR-ROTOR-STATOROF THE SUBSONICAXIAL COMPRESSOR
2006Results of researches of blade rows unsteady interaction in the three-rows stage of the axial compressor are presented with the purpose of definition the gasdynamical mechanism of clocking effects in system of rows stator-rotor-stator. Experiments were carried out on the large-dimensional low-speed compressor with measurements of stationary and ...
V.E. Saren, N.M. Savin
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