Maximum Short Circuit Force Calculation of 3-ϕ Induction Motor Using FEM Analysis

7/25/2019 Maximum Short Circuit Force Calculation of 3- Induction Motor Using FEM Analysis

1/18

Maximum Short Circuit Force Calculationof 3- Induction Motor Using FEM Analysis

PRESE!E" #$1. Soni Divyangkumar R.(121000109025)

2. Patel Krunal V.(121000109029)

3. Padiyar !mit"in S.(1210001090#3)

#. $amit !n%ali R.(1210001090&2)

%UI"E" #$ Patel Jekisan R. (Ass. Professor)

!EAM I" 30860


2/18

&utline '- #ac(ground Pro)lem Identification &)*ecti+e "esign of Induction Motor

Finite Element Method Exam,les of FEM Analysis or( !ill o.

Conclusion and Future or( References


3/18

#ac(ground Prin'ile

!li'ation

!dvantage"

Simle and rugged de"ign* lo+ 'o"t and lo+ maintenan'e are temain advantage" o, indu'tion motor".

-ndu'tion otor /ommon u"e in -ndu"trial motion 'ontrol "y"tem*

a" +ell a" in main o+ered ome alian'e".


4/18

Pro)lem Identification

le'tromagneti' ,or'e" a't et+een te rotor and "tator +en te

rotor i" er,orming e''entri' motion" +it re"e't to te "tator.

-t i" mandatory tat ,or'e" "ould e re"train to te limit ,or te

rote'tion again"t te de,ormation o, te +inding and te rotor

ar.


5/18

&)*ecti+e

e aim o, ti" ro%e't i" to de"ign te indu'tion motor u"ing

analy"i". -n our ro%e't +e +ill u"e !4SS and !4S6 !78. !t te initial "tage odeling o, -. +ill e 'arried out in atla ,or te

"uitale rating. !t te later "tage te /!D de"ign o, odel +ill e done.

Di,,erent !naly"i" in !n"o,t !78 and !4SS.

1. le'tromagneti' analy"i" : DD analy"i"; or o""e"* lu#

3 8inding a'tor(K+) 0.955

!verage ,lu< den"ity(?av)* 8@m2 0.#5

4 !mere 'ondu'tor"(!') 23000

5 Ratio o, 'ore lengt to ole it'* (@) 1.5

6 /urrent den"ity in "tator 'ondu'tor* !@mm2 #

7 Pit' ,a'tor(K) 1

8 ?ar 'urrent den"ity* !@mm2 A

19 /urrent den"ity in end ring* !@mm2 &

11 Det o, ring(De)* mm 10

12 i'kne"" o, ring(e)* mm &

Sr o/ "escri,tions 0alue

1 ,,i'ien'y(,) >5

2 Po+er ,a'tor(P,) 0.>#

3 8inding a'tor(K+) 0.955

!verage ,lu< den"ity(?av)* 8@m2 0.#5

4 !mere 'ondu'tor"(!') 23000

5 1.5

6 /urrent den"ity in "tator 'ondu'tor* !@mm2 #

7 Pit' ,a'tor(K) 1

8 ?ar 'urrent den"ity* !@mm2 A

19 /urrent den"ity in end ring* !@mm2 &

11 Det o, ring(De)* mm 10

12 i'kne"" o, ring(e)* mm &

Assume data


8/18

In,ut motor s,ecification

Assum,tions li(e' Efficiency : Po.er factor:inding Factor: A+erage flux density: Am,ereconductors: Ratio of core length to ,ole ,itch:

Current density instatorconductor: Pitch factor

Calculation ofMaindimension

Stator design' $o(e : Stator teeth and Stator slot

Rotor design' Rotor slots: Rotor dimensions

E"

"2/; < =>C9/ ns

"o < ?"@2/dss@2/dcs/

lg < B9/2 @2 ?"/;DAirgaplength

"i


9/18

Sr o/ "escri,tions 0alue

1 Diameter o, "tator ore (D)= mm 115.5

2 engt o, "tator ()= mm 13A.0

3 Stator "lot"(S") 32

# Dimen"ion" o, "tator "lot= mm S+t"B10.1252*S+"B12.00A0

5 6uter diameter o, "tator (Do)=mm 201

A !ir ga (lg)* mm 0.#503

& 6uter rotor Diameter(Dr)* mm 11#.3>&1

> 4umer" o, rotor "lot"(Sr) 3#

9 Dimen"ion" o, rotor "lot= mm 8"rB#.3* D"rB9.3

10 -nner diameter o, rotor lamination"(Di)*mm 3>.&>&1

&ut,ut data


10/18

Finite Element Method

i" a numeri'al metod ,or "olving a di,,erential or integral

eCuation. -t a" een alied to a numer o, y"i'al rolem"*

+ere te governing di,,erential eCuation" are availale.

4o+ a day" metod i" "o mu' oular ,or te

ele'tromagneti' de"ign o, any rodu't.

Di,,erent !naly"i" /aaility;

1. agneto"tati' : ddy /urrent !naly"i"

2. le'tro"tati' !naly"i"

3. ermal !naly"i"

#. Stru'tural !naly"i"

5. /omutational luid Dynami'"


11/18

!y,ical FEM Procedure )yCommercial Soft.are

Preprocess

USER-Build a FE model

Solution COMPUTER-Conductnumerical analysis

Postprocess

USER-Seeresults


12/18

Exam,les of FEM Analysis

S(in effect in Ca)le

Proximity effect in Ca)le


13/18

S(in effect in Ca)le


14/18

Proximity effect in Ca)le


15/18

or( !ill o.


16/18

Conclusion and Future or(

Sort /ir'uit or'e /al'ulation y !naly"i".

!naly"i" o, Di,,erent /ara'teri"ti'" gra.


17/18

References1. inite lement or'e /al'ulation in inear -ndu'tion a'ine"E* K.!damik* F. iGia* $.. Da+"on* !.R. a"tam* - R!4S!/-64S 64

!$4-/S* V6. !$23* 46. 5* SP?R 19>&.

2. inite lement or'e /al'ulation o, a inear indu'tion otor aking !''ount

o, te ovementE* DalHo -m* /ango Kim* - R!4S!/-64S 64

!$4-/S* V6. 30* 46. 5*SP?R 199#.

3. or'e /al'ulation in !


18/18

Maximum Short Circuit Force Calculation of 3-ϕ Induction Motor Using FEM Analysis

Documents

Transcript of Maximum Short Circuit Force Calculation of 3-ϕ Induction Motor Using FEM Analysis