lecture36-manufacturing practices of electrical machines讲座电机制造实践.pdf

ElectricMachineDesignCourse

ManufacturingPracticesofElectricalMachines

Lecture#36

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Motorlaminationprocessingoptions

MitsuiHigh-tec

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RotorStatorcorestacking

Riveted(handorautomatic)

Bonded(Handstackedwithtooling)

Staked(handorautomatic)

Cleating(handorautomatic)

LaserorTigwelded(handorautomatic)

Interlocked(directfromstampingdie)

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Openframeorhousedmachines

Pressingorshrinkfittingstatorcoresinto

stampedorcastframe.

Sometimesradialforcesreduceic

propertiesoflaminations

Useofadhesivetoattachstatorcoretoframe.

Usedtoeliminatepressfittedcoreproblems

Openframestatorcoreswithnohousingframe

Lowestcostmethod

Capableofsmallicair-gaps

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Rotorconstruction

SPMbrushlessrotorsrequireretentionvia

sleevingorpre-stressedyarnwrapping,

spacingcanbevariedtoreducecogging

Inductiondiecastrotorcagesmustbefreeofvoids

andbrokenbars.

Loosebarscausenoisyoperationandimbalance

CertainNEMAbardesignsintendedforgriddutynot

suitableforinverterdrivenmachines

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Mfg.processingofsmalltomediumstators

StacklamstoInsulatecoreInsulatecoreWindcoilsinWindcoilsinInsertphase

formstatorcorephasegroupsphasegroupscoilsintocore