DC motor brush life

Hamilton, R.J.

doi:10.1109/ias.1998.730123

Cited by 12 publications

(6 citation statements)

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“…Basic mechanisms of the brush and commutator wear are well known. As explained in [6], the main parameters that determine the brush life are: presence of commutator film, temperature, current density dependent on the load, speed, humidity and mechanical vibration. The associated wear mechanisms can be experimentally quantified.…”

Section: Discussionmentioning

confidence: 99%

Instrumentation and experimental investigation of industrial DC machines for condition monitoring purposes

Mirzaeva

Summers

Betz

2010

The XIX International Conference on Electrical Machines - ICEM 2010

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DC machines continue to be widely used in many applications including mining. No comprehensive condition monitoring tools for large industrial DC machines are available on the market. Recent advances in sensoring, data acquisition and signal processing technologies allow one to obtain real time chracteristics of DC machines directly related to their performance, such as flux density distribution inside the main air gap. This paper is based on a research project sponsored by industry partners that included construction of a test facility and an extensive experimental program with a view of development of a condition monitoring tool. The paper explains about the motor instrumentation, facility structure and tests performed to date. Based on the experimental results, a number of performance characteristics are derived in the paper including steady state, dynamic and digital drive related characteristics,as described in the paper. The findings of the paper are discussed with their potential application to the condition monitoring tool development.

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Section: Discussionmentioning

confidence: 99%

Instrumentation and experimental investigation of industrial DC machines for condition monitoring purposes

Mirzaeva

Summers

Betz

2010

The XIX International Conference on Electrical Machines - ICEM 2010

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“…This is assuming that the weight of the solar panel is compensated by a counterweight so the mechanical load to the motor has, remained the same. 80Watts signifies that at maximum solar radiation, which is what was calculated above, then the appropriate value of energy consumed over the year is calculated [11]: With the net energy calculations, both systems can be compared numerically by using the net energy gain over using just the immobile solar panel. The numbers used are from the 1:1 step size results and all results in this table are average or fair weather conditions over the entire year and each system is using the same identical 80W solar panel: Percentage Gains of Tracking Systems over a Year =…”

Section: Fig 17: Percent Total Solar Radiation In a Yearmentioning

confidence: 99%

Analysis and implementation of a solar tracking rack system

Okandeji¹,

Olajide²,

Olasunkanmi³

et al. 2020

Nig. J. Tech.

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Solar energy is the most feasible source of renewable energy especially in sun rich regions like Africa. In particular, electrically epileptic country like Nigeria with current power output of only about 3.5GW of energy has a relatively long sunny period for about 90% of the year, making Nigeria very rich in solar power. Maximally harnessing solar energy into usable electricity however, is still a fundamental problem as the existing models can harness only about 70% of the available energy. To maximally harness solar energy, a solar panel must be perpendicular to the energy source for all 12hours of sunlight availability, and must be able to follow the sun’s movement all day long. Accordingly, this work considers the analysis, construction, and implementation of a single axis solar tracking dynamic system. Experimental result show that the proposed system outperforms the conventional static solar tracking system. Keywords: solar energy, single axis, harvesting-solar energy.

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“…Friction produces carbon dust, while the result of electrical erosion is the vaporization of carbon with little physical residue. In order to achieve a good coefficient of friction between the carbon brush and the slip ring, it is necessary to establish a good carbon composite film [3]. A good film layer can reduce the coefficient of friction to 10% of the original bare coefficient.…”

Section: A Brush Operationmentioning

confidence: 99%

Generator requirements and functionality for ocean energy converters

O’Sullivan

Lewis

2010

The XIX International Conference on Electrical Machines - ICEM 2010

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The development of wave and tidal energy power generation technology is moving steadily towards precommercial status. The multitude of widely differing power capture technologies means that it is a difficult industry to analyse in terms of a common approach to optimal generator selection or design. This paper examines some of the overarching requirements that will pertain to all device developers in terms of generator technology. It then examines some of the requirements imposed by the individual device technologies and the sometimes widely differing functionality of the generator operation and control in each case. In conclusion, this study will assist in identifying the design drivers for off the shelf (OTS) machine selection or indeed custom machine design in ocean wave and tidal devices.

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DC motor brush life

Cited by 12 publications

References 0 publications

Instrumentation and experimental investigation of industrial DC machines for condition monitoring purposes

Instrumentation and experimental investigation of industrial DC machines for condition monitoring purposes

Analysis and implementation of a solar tracking rack system

Generator requirements and functionality for ocean energy converters

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