Development of a totally enclosed fan cooled traction motor

Noda, Shinichi; Mizuno, Sueyoshi; Koyama, Tomonori; Shiraishi, Shigetomo

doi:10.1109/ecce.2010.5618030

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…The speed obtained from the three‐phase Hall sensor is

ω_{re} false(k false) = \frac{π / 3}{T false(k false)}

where

ω_{re}

is the calculated electric rotor speed derived from the low‐resolution Hall‐effect sensors and

T false(k false)

is the time interval between two Hall‐effect sensors at the k sampling time. By using the rotor speed calculated in (1), it is possible to estimate the rotor position at each sampling time as follows [11]:

{\hat{θ}}_{re} false(k false) = ω_{re} false(k - 1 false) normalΔ t + {\hat{θ}}_{re} false(k - 1 false)

where

{\hat{θ}}_{re} false(k false)

is the k estimated rotor position, k is the number of the sampling interval,

ω_{normalr} false(k - 1 false)

is the ( k – 1) sampling speed,

normalΔ t

is the sampling interval of the speed loop, and

{\hat{θ}}_{re} false(k - 1 false)

is the ( k – 1) estimated rotor position.…”

Section: System Description and Rotor Estimationmentioning

confidence: 99%

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Improved efficiency of a fan drive system without using an encoder or current sensors

Liu

Huang

2018

J. eng.

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“…The speed obtained from the three‐phase Hall sensor is

ω_{re} false(k false) = \frac{π / 3}{T false(k false)}

where

ω_{re}

is the calculated electric rotor speed derived from the low‐resolution Hall‐effect sensors and

T false(k false)

{\hat{θ}}_{re} false(k false) = ω_{re} false(k - 1 false) normalΔ t + {\hat{θ}}_{re} false(k - 1 false)

where

{\hat{θ}}_{re} false(k false)

is the k estimated rotor position, k is the number of the sampling interval,

ω_{normalr} false(k - 1 false)

is the ( k – 1) sampling speed,

normalΔ t

is the sampling interval of the speed loop, and

{\hat{θ}}_{re} false(k - 1 false)

is the ( k – 1) estimated rotor position.…”

Section: System Description and Rotor Estimationmentioning

confidence: 99%

“…Noda et al investigated a totally enclosed fan cooled traction motor. By using this motor, the dust problem was solved and the acoustic noise was reduced [11]. Lelkes et al proposed a brushless DC motor for fan applications.…”

Section: Introductionmentioning

confidence: 99%

Improved efficiency of a fan drive system without using an encoder or current sensors

Liu

Huang

2018

J. eng.

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“…Typically, thermal performance is improved by over sizing the machine. However, this may not be always feasible due to cost and space constraints such as in case of traction motors [2–5] or in a skid‐mounted hydraulic fracturing equipment.…”

Section: Introductionmentioning

confidence: 99%

Iterative conjugate heat transfer analysis for heat transfer enhancement of an externally cooled three‐phase induction motor

Tiwari¹,

Yavuzkurt

2017

IET Electric Power Applications

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A novel iterative conjugate heat transfer method is proposed for thermal modelling of a drill pump motor which is a constant speed three-phase induction motor. The major advantage of this technique is that it enables computational fluid dynamics (CFD) and heat transfer analysis of the rotor and the stator in a segregated manner. The two are then coupled in a separate annulus model, which represents the air gap, via boundary conditions on the annulus walls. This greatly reduces the total number of computational cells and enables good quality mesh generationa prerequisite for accurate CFD predictions. To validate this method, a baseline CFD and heat transfer analysis was done using FLUENT and the maximum temperature prediction was found to be within 1.75% of the previously done experiments on the existing design of the machine. Further, this method was applied to develop a heat transfer enhancement solution which reduced the maximum temperature in the drill motor from 203.5°C to 172.9°C.

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“…Typically thermal performances have been improved increasing the volume of the machine but it is well known that this solution may increase the cost. In addition in many applications such as traction system drives lighter motors are required and free space for electrical motors is reduced so that increasing the volume of electrical machine is not allowed [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Thermal test procedure and analytical model calibration method for electrical machines

SanAndres

Almandoz

Poza

et al. 2013

2013 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD)

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Development of a totally enclosed fan cooled traction motor

Cited by 8 publications

References 3 publications

Improved efficiency of a fan drive system without using an encoder or current sensors

Improved efficiency of a fan drive system without using an encoder or current sensors

Iterative conjugate heat transfer analysis for heat transfer enhancement of an externally cooled three‐phase induction motor

Thermal test procedure and analytical model calibration method for electrical machines

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