A 50kW integrated fault tolerant permanent magnet machine and motor drive

Wolmarans, J.J.; Gerber, M.; Polinder, H.; Haan, S.W.H. de; Ferreira, J.A.; Clarenbach, D.

doi:10.1109/pesc.2008.4591953

Cited by 28 publications

(26 citation statements)

References 15 publications

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“…The circle indicates the target application. The trend for fractional pitch, concentrated winding machines (crosses) is distinctly lower than other lines reported [4]- [11]. This is generally attributable to the sharp increase in rotor loss found in concentrated winding machines, due to the significant space harmonics present in the airgap.…”

Section: A Backgroundmentioning

confidence: 72%

“…Permanent magnet machines with fractionally pitched, concentrated windings are however particularly suitable for use as fault tolerant machines due to the physical separation of phases [8]- [11], allowing inherent fault isolation. By designing the phase windings to have unity inductance, fault currents will be limited [8]- [11] and a highly fault tolerant machine results.…”

Section: A Backgroundmentioning

confidence: 99%

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A low conductivity composite rotor for fractional pitch concentrated winding machines

Wolmarans

Geest

Polinder

et al. 2011

2011 IEEE Energy Conversion Congress and Exposition

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Fractional pitch, concentrated winding machines are recently enjoying attention due to their suitability as basis for fault tolerant machine designs. The concentrated nature of the armature current distribution yields significant rotor eddy current loss production due to the harmonics present in the airgap, leading to significant rotor loss in high power and high speed machines. By using carbon fiber for the retaining sleeve and plastic bonded magnets for rotor magnetization, rotor eddy current loss may be reduced. Both materials require certain tradeoffs between electrical, mechanical and magnetic properties but their high electrical resistivity makes them attractive for use in high speed, fault tolerant, electrical machine design.

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Section: A Backgroundmentioning

confidence: 72%

Section: A Backgroundmentioning

confidence: 99%

A low conductivity composite rotor for fractional pitch concentrated winding machines

Wolmarans

Geest

Polinder

et al. 2011

2011 IEEE Energy Conversion Congress and Exposition

Self Cite

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“…Different variations of this concept have been proposed -from a simple mount of the PE on the case of the motor to modularising the power converter and mounting the smaller converter units on the motor housing [19][20][21][22][23][24]. In Fig.…”

Section: Surface Mount Integrationmentioning

confidence: 99%

“…By redesigning the housing to accommodate an active cooling system [20], it can also act as a heat sink for the PE and converter (common thermal node) by offering a larger surface area for heat transfer and dissipation. The housing also provides mechanical stability and a mounting surface for the converter [21]. Extra thermal management and cooling mechanisms can be adopted for high power density motors where stator winding temperatures reach and sometimes exceed 200°C.…”

Section: Surface Mount Integrationmentioning

confidence: 99%

Integrated motor drives: state of the art and future trends

2017

IET Electric Power Applications

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With increased need for high power density, high efficiency and high temperature capabilities in aerospace and automotive applications, integrated motor drives (IMD) offers a potential solution. However, close physical integration of the converter and the machine may also lead to an increase in components temperature. This requires careful mechanical, structural and thermal analysis; and design of the IMD system. This study reviews existing IMD technologies and their thermal effects on the IMD system. The effects of the power electronics position on the IMD system and its respective thermal management concepts are also investigated. The challenges faced in designing and manufacturing of an IMD along with the mechanical and structural impacts of close physical integration is also discussed and potential solutions are provided. Potential converter topologies for an IMD like the matrix converter, two-level bridge, three-level neutral point clamped and multiphase full bridge converters are also reviewed. Wide band gap devices like silicon carbide and gallium nitride and their packaging in power modules for IMDs are also discussed. Power modules components and packaging technologies are also presented. IntroductionOver the last two decades there has been a shift from traditional physically separated motor and drive systems to more compact, power dense, motor-drive combinations [1]. This new power-dense motor-drive structure combines both the motor and its associated control and drive circuitry within a single enclosure. The earliest records of commercially available motor-drive systems were manufactured by Grundfos in 1991 and Franz Morat KG in 1993 [2].These compact systems have been called a variety of names from 'smart motors' to 'integrated motors', the latter forming the foundation for the new moniker currently identified with these systems [3]. The term 'integrated motor drive (IMD)' is the latest associated with this class of products and is as a result of the success of a TB Woods Inc. manufactured motor-drive registered under the same name [3].IMDs are increasingly being developed and produced by machine manufacturers due to the significant potential benefits they offer. The most significant of these benefits include direct replacement of inefficient direct on line motors, increased power density, lower losses and lower costs compared with separate motor and drive solutions. Technological advancements over the last decade have led to the development of robust electronic components able to withstand the harsh environments required by some forms of integration [4]. By eliminating separate enclosures and long cable runs, the integrated approach promises to lower system costs by 20 to 40% [5].Elimination of transmission cables has economic advantages, including increased reliability due to the removal of the output filter commonly required for long cables. Removal of long cable runs and integration into a single package will also significantly reduce potential electromagnetic interference (EMI). This a...

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“…There have been a number of applications where such a system has been employed as a means of incorporating fault tolerance. [105]- [107] uses this design concept for traction applications and [108] uses this for aerospace applications.…”

Section: Fault Tolerancementioning

confidence: 99%

A Review of Methods to Increase the Availability of Wind Turbine Generator Systems

Shipurkar¹,

Polinder²,

Ferreira³

2016

CPSS TPEA

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Abstract-Availability is an important factor to be considered when designing wind turbine generator systems. The quest for increased availability is based on the following five design approaches -design for component reliability, active control for reliability, design for fault tolerance, prognostics, and design for maintainability. This paper reviews methods focussing on the first three, i.e. component reliability, active control, and fault tolerance. The paper further identifies some promising directions for further research.

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A 50kW integrated fault tolerant permanent magnet machine and motor drive

Cited by 28 publications

References 15 publications

A low conductivity composite rotor for fractional pitch concentrated winding machines

A low conductivity composite rotor for fractional pitch concentrated winding machines

Integrated motor drives: state of the art and future trends

A Review of Methods to Increase the Availability of Wind Turbine Generator Systems

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