Control of Stator Winding Slot Cooling by Water Using Prediction of Heating

Φ Abstract --High-speed ranging requires various equipment, for example compressors, turbo-compressors and turbocirculators nowadays. Solutions using electrical drive with gearboxes is limited by technical feasibility, lifetime and maintenance of gearbox systems. Thanks to development of frequency converters is possible to build direct high-speed electrical drive. This paper is dealing with design of high-speed solid rotor cage induction machine for running 6 kW, 120 000 rpm helium turbo-circulator. Design of high speed electrical machine for TC is described from requirement specification to manufacturing. Results of mechanical, electromagnetic and thermal calculations are given. Proposed design approached can be used in various application in which high speed electrical machine is required.

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“…Used relationships and coefficients validity has been verified by many experiments on real machines e.g. [18].…”

Section: E Thermal Design and Calculationsmentioning

confidence: 72%

Design of high-speed induction machine for the 6 kW, 120 000 rpm helium turbo-circulator

Bárta

Ondrůšek

Lošák

et al. 2016

2016 XXII International Conference on Electrical Machines (ICEM)

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“…Also, a number of heat extraction techniques using the motorette assemblies, e.g. natural convection, liquid cooling of the motor housing and direct oil cooling of the winding body has been shown in the literature [38]- [44]. Moreover, tests on motorette assemblies provide an insight into the power loss effects suitable in loss separation and also inform the loss temperature dependence, which is particularly important at ac operation, where the loss varies with temperature in a different manner to that at dc operation [33].…”

Section: B Motorette Assemblymentioning

confidence: 99%

“…The development of these experimental techniques for a more accurate thermal study of electrical machines has recently gained more interest [4]- [44], with earlier work in the field focusing on custom built experimental setups, where more challenging heat transfer effects are investigated in detail, e.g. convective heat transfer analysis in the machine's mechanical air-gap between the rotor and stator assemblies [45]- [47].…”

Section: Introductionmentioning

confidence: 99%

“…There are numerous manufacturing and assembly processes affecting the stator-winding thermal behaviour and loss generated, making it particularly challenging to accurately analyse. The most recent work in the field treats the statorwinding assembly in detail [8]- [44]. Starting from tests on materials samples to evaluate the magnetic [48], mechanical [49]- [51] or thermal [4]- [17] characteristics for both homogeneous or composite materials, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Testing on a complete stator-winding assembly prior to the final machine assembly is the last stage of the sub-assembly testing, where various contact thermal resistances, power loss from interaction between neighbouring phases and repeatability of the manufacturing process used are of particular interest [32]- [37]. Some of the work reported in the literature refers here to insulation fault detection [4], [54], heat transfer from the stator-winding into the machine housing [40]- [44] and dummy rotor testing to estimate the mechanical loss contribution [55]. It is important to note that tests on the complete machine hardware still provide a vital source of information used in the machine development, where numerous designs variants are considered.…”

Section: Introductionmentioning

confidence: 99%

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Experiment informed methodology for thermal design of PM machines

Ayat

Wróbel

Goss

et al. 2016

2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER)

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The common approach used in the thermal design of electrical machines is calibrating thermal models based on the designer's previous experience, or hardware tests on a prototype machine. This allows for various manufacture and assembly nuances to be accounted for in the design process, assuring accurate and computationally efficient predictions of the machine thermal behaviour. The post-manufacture calibration of thermal models from tests on a complete machine has limited use in development of machine topologies, where no previous experience or machine hardware exist. In this context, an experiment informed design technique that makes use of reduced order machine sub-assemblies presents an attractive alternative. In particular, the hardware manufacture cost and time is significantly reduced compared to the prototyping of the complete machine assembly. This allows for numerous hardware samples to be constructed and tested, to inform the machine design process. The use of the machine sub-assembly testing is focused, but not limited to identifying and quantifying various power loss and heat transfer phenomena. This paper reviews the applicability of the sub-assembly testing in a broader context of the machine design. The aim of the research focuses on formulating a basis for sub-assembly based, experiment informed methodology for the thermal design of electrical machines.

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Optimization of Stator Channels Positions Using Neural Network Approximators

Sikora

Ancik

2011

Mechatronics

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Control of Stator Winding Slot Cooling by Water Using Prediction of Heating

Cited by 8 publications

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Design of high-speed induction machine for the 6 kW, 120 000 rpm helium turbo-circulator

Design of high-speed induction machine for the 6 kW, 120 000 rpm helium turbo-circulator

Experiment informed methodology for thermal design of PM machines

Optimization of Stator Channels Positions Using Neural Network Approximators

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