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A Semi-Active Ankle Prosthesis With Automatic Transitions Between Passive and Active Modes. [PDF]
IEEE Trans Med Robot BionicsMani VAS +3 more
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Frame-to-Shaft Voltage and End-to-End Shaft Voltage Analysis According to Eccentricity in IPMSMs
2018 IEEE Energy Conversion Congress and Exposition (ECCE), 2018Common-mode voltage (CMV) by switching pattern of space vector pulse width modulation (SVPWM) excites the parasitic capacitance links in the motor and results in frame-to-shaft voltage. In addition, asymmetric magnetic fields by common-mode current (CMI), eccentricity, and demagnetization causes the end-to-end shaft voltage.
Jin Hur, Nicola Bianchi, Jun-Kyu Park
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Shaft Voltages and Rotating Machinery
IEEE Transactions on Industry Applications, 1993In order to determine whether a machine is experiencing shaft voltage and current problems, recognition of the four types of damage is imperative. The four distinct types of shaft current damage, frosting, spark tracks, pitting, and welding are described. The four shaft voltage sources and their means of generation are discussed in detail.
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Study on Effect of Neutral Voltages on Shaft Voltages Causing Bearing Currents
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013This paper investigates that effect of neutral voltage on shaft voltages. The shaft voltages are expected to provide cause of bearing currents. The bearing currents damage bearing in motor. We expect neutral voltages to cause shaft voltages. Thus, we construct circuit of interior motor.
Hiroshi Mizoguchi +2 more
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An Overview of Shaft Voltages and Bearing Currents in Rotating Machines
2016 IEEE Industry Applications Society Annual Meeting, 2016Shaft voltages and associated "shaft currents" or "bearing currents" have been known since more than a century on DC and AC motors under classical line operation. More recently with the emergence of inverter drives, there has been an increase of high-frequencies bearing currents and shaft voltages creating mainly premature failure of bearings. Although
Thierry Boileau +2 more
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Monitoring of Shaft Voltages and Grounding Currents in Rotating Machines
2014 17th International Conference on Electrical Machines and Systems (ICEMS), 2014The phenomenon of voltages and currents on motor and generator shafts has been known for the last 100 years [1, 2]. It affects motors, hydro generators and turbo generators. There has been an increase in occurrences and intensity of shaft current damages as machines became larger, particularly on high speed turbo generators.
Mladen Šašić
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Turboalternator shaft voltage measurements
2012 IEEE International Workshop on Applied Measurements for Power Systems (AMPS) Proceedings, 2012This paper presents the results of shaft voltages measurement campaign undertaken to investigate the sources of unrecoverable temperature drift observed on the thrust bearing of a small industrial steam turbine of a turbogenerator installed in a cogeneration biomass thermal power station.
D'ANTONA, GABRIELE +3 more
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Determination of shaft position from shaft voltage on a synchronous generator
2005 5th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, 2005Shaft voltages and currents are an unavoidable characteristic of rotating machines. Recently there has been renewed interest in the diagnostic possibilities of these signals. This paper presents a technique to determine the mechanical shaft position using a capture of the shaft voltage and a mechanically aligned pre-recorded reference.
Simon J. Hoffe +2 more
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