SlideShare a Scribd company logo
Transformer with
3D wound core
Definition (GB25438-2010)
1. Terms and definition
Terms and definition in GB 1094.1, GB/T 2900.15 and below are
applied in this standard.
2. Three dimensional wound core
Core combined by three single wound core frames with the same
size to form a 3D triangle.
3. Distribution transformer with 3D wound core
Distribution transformer with magnetic circuit of 3D wound core
Structural analysis and evolution of core
Innovation of core structure
In traditional lamination stacked core with air gap, coupled magnetic
circuit of A-C phase is 1/2 longer than that of A-B and B-C, so the magnetic
circuit is not balance, reluctance of A-C phase is bigger. (See figure 1)
When three-phase voltage is applied to the transformer, three-phase
balanced flux ΦA, φB and φC are generated on the core. When three-
phase balanced flux goes through unbalanced magnetic circuit, magnetic
pressure on phase A and C is big, which affects three-phase voltage
balance. Imbalance on the magnetic loop is a structural defect which
cannot be overcome for transformer with plane core.
Fig. 1 Structure of plane core
Plane wound core is without seam, saving weight on 4
corners, which is suitable to single phase transformer.
In 1940s, 500KVA transformer with wound core (shell type) in Moscow transformer
factory.
In 1960s, transformer with single phase wound core was applied in China.
In 1986, the first 30kVA transformer with three-phase closed wound core was
manufactured in Shanghai.
In 1990s, industry equipment and technology were imported from Japan and Sweden to
China, and trial production started.
Plane core
AC intersecting
chain flux
AB intersecting
chain flux
BC intersecting
chain flux
Saving 4 corners
compared to stacked core
For symmetry of three-phase
magnetic circuit – It has been…
Yoke
Yoke
Core limb
Single frames and combination
Fig. 2 Arrangement of 3D cores and single
frames

Compared with traditional transformer structure with lamination
stacked core, transformer with 3D wound core is a kind of new and high
performance transformer with more reasonable structure, better
performance and lower producing cost. Great popularization and wide
use of this transformer will greatly save sources of energy and material
with remarkable economic profit. Therefore, this kind of transformer
will catch general attention and interest.

The whole 3D wound core is composed by three identical single frames,
and three core limbs of the combined core are arranged in equilateral
triangle. Each single frame is wound by several ladder shaped material
strips continuously and orderly, and the cross section of wound single
frame is near semicircle, and the combined cross section is quasi-
polygon which is very close to a circle.

Different size of ladder-shaped strips for winding single frame can be
got by suit cut on special curve slitting machine. This kind of suit cut is
without waste material, which is to say the utilization rate of material is
100% during suit cut.
Advantages in six aspects
 Saving material and reducing manufacturing cost: 20% silicon steel and 5% wire can be
saved compared with that of plane three-phase lamination stacked core with the same
capacity, thus it obviously reduces manufacturing cost, which is very popular with any
transformer manufacturer and customer.

Improving performance: with the same core and magnetic flux density, no-load loss is
reduced by around 15% compared with that of transformer with plane lamination stacked
core.

Greatly reducing no-load current: no-load current is reduced by 70~80% compared with
that of transformer with plane stacked core.

Reducing noise obviously: 10 decibel is reduced compared with that of transformer with
plane lamination stacked core. (5 decibel reduced for open type)

Improving production efficiency: for open type wound core, core winding and coiling
winding can be carried out at the same time, which improves production efficiency by
more than 50%; reparation is much easier.

Three-phase balance: because of different three-phase magnetic path length, no-load loss
on two side frames of the transformer with plane three-phase stacked core is 20% more
than that on the central column; while no-load loss on three core limbs of the transformer
with three-phase 3 D triangular wound core are the same because of the same magnetic
path length of three core limbs, so three-phase balance is perfect.
Advantage
ContinuousContinuous
windingwinding
AnnealingAnnealing
IncreasingIncreasing
magneticmagnetic
performanceperformance
and loweringand lowering
technologytechnology
coefficientcoefficient
Reducing no-Reducing no-
load currentload current
Reducing no-Reducing no-
load lossload loss
SymmetricSymmetric
al layoutal layout
IndependentIndependent
symmetricalsymmetrical
looploop
Three-Three-
phasephase
balancebalance
No three timesNo three times
harmonic waveharmonic wave
FasteningFastening
without airwithout air
gapgap
ReducingReducing
noisenoise
ShortShort
magneticmagnetic
circuitcircuit
ReducingReducing
load lossload loss
High fill factorHigh fill factor
and laminatedand laminated
coefficientcoefficient
Advantages
Open type coreOpen type core
winding andwinding and
coil windingcoil winding
can be carriedcan be carried
out at the sameout at the same
time.time.
Easy reparation
ImprovingImproving
efficiencyefficiency
Lessen humanLessen human
factor to havefactor to have
stable qualitystable quality
ManufacturinManufacturin
g of core andg of core and
windingwinding
needs specialneeds special
equipment.equipment.
A little investment on
equipment
It is used forIt is used for
thin materialthin material
processing.processing.
Product withProduct with
highhigh
performanceperformance
and low lossand low loss
SavingSaving
materialmaterial
Small size / light weight, loweringSmall size / light weight, lowering
cost and good looking appearancecost and good looking appearance
Slitting machine, Rewinding machine and Winding machine
Winding of single frame is on the
special winding machine for 3D
wound core. While winding this
kind of material strips, the
winding machine can
automatically finish a 30 degree
angle with precision on material
to assure the well binding
between surfaces on combining
three single frames.
Core winding
Alignment of three windows
Annealing
under vacuum
During manufacturing of wound core, as silicon steel
experienced transportation, loading and unloading,
slitting and winding process, stress generates on the
cold-rolled silicon steel and then affects its magnetic
performance. To recover its grain orientation and
realize ordered arrangement of the grain inside the
steel and to recover its magnetic performance as
much as it leaves factory, stress shall be removed
under the condition that insulation coating is not
damaged, and the core needs annealing. During
annealing, there is no phase change on silicon steel,
no grain size change or structure change, only
magnetism is recovered. Verified by testing, no-load
loss on the core after annealing is reduced obviously.
Rising time Preserving time Cooling down time
Temperature
Annealing under vacuum

Annealing is mostly affected
by annealing equipment,
temperature, time
(temperature rising,
preserving and decreasing),
silicon steel grade, and
quantity put in oven, core
diameter, atmosphere in
oven, which makes
technology coefficient of core
loss with large dispersion.

Annealing consumes large
quantity of power.

More Related Content

What's hot

Distribution transformer
Distribution transformerDistribution transformer
Distribution transformer
Muhammad Mohsin Raza
 
Construction of three phase induction motor
Construction of three phase induction motorConstruction of three phase induction motor
Construction of three phase induction motor
Dr.Raja R
 
Design of shunt active power filter to mitigate harmonic
Design of shunt active power filter to mitigate harmonicDesign of shunt active power filter to mitigate harmonic
Design of shunt active power filter to mitigate harmonic
sager alswed
 
Study of Turbo Generators
Study of Turbo GeneratorsStudy of Turbo Generators
Study of Turbo Generators
Padmanav Mishra
 
Distribution Transformer Design (Electrical Machine Design)
Distribution Transformer Design (Electrical Machine Design)Distribution Transformer Design (Electrical Machine Design)
Distribution Transformer Design (Electrical Machine Design)
Md. Rayid Hasan Mojumder
 
A Project on Transformer Design.pdf
A Project on Transformer Design.pdfA Project on Transformer Design.pdf
A Project on Transformer Design.pdf
MohammadAtaurRahmanA
 
Short circuit test in brief
Short circuit test in briefShort circuit test in brief
Short circuit test in brief
Muthar Hussain
 
Transformer
TransformerTransformer
Transformer
karthickaashi
 
Transformer design by s u khaparkar
Transformer design by s u khaparkarTransformer design by s u khaparkar
Transformer design by s u khaparkar
exhod
 
Generator protection by bhushan kumbhalkar
Generator protection by bhushan kumbhalkarGenerator protection by bhushan kumbhalkar
Generator protection by bhushan kumbhalkar
Bhushan Kumbhalkar
 
Design of transformer
Design of transformerDesign of transformer
Design of transformer
Subrata Dey
 
Design of substation (with Transformer Design)
Design of substation (with Transformer Design) Design of substation (with Transformer Design)
Design of substation (with Transformer Design)
SayanSarkar55
 
Presentation on 132/33KV BSPTCL(Bodhgaya Substation)
Presentation on 132/33KV BSPTCL(Bodhgaya Substation)Presentation on 132/33KV BSPTCL(Bodhgaya Substation)
Presentation on 132/33KV BSPTCL(Bodhgaya Substation)
Rahul Prajapati
 
Transformer Designing
Transformer Designing Transformer Designing
Transformer Designing
Praveen Sharma
 
Three phase transformer ( vector groups)
Three phase  transformer ( vector groups)Three phase  transformer ( vector groups)
Three phase transformer ( vector groups)
Dr.Raja Masood Larik
 
OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION
OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION
OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION
Jitendra Bhadoriya
 
Setp by step design of transformer
Setp by step design of transformerSetp by step design of transformer
Setp by step design of transformer
binodsahu8
 
Design of transformer: yoke & core dimensions
Design of transformer: yoke & core dimensionsDesign of transformer: yoke & core dimensions
Design of transformer: yoke & core dimensions
Asif Jamadar
 
Principles Control & Protection of HVDC Schemes
Principles Control & Protection of HVDC SchemesPrinciples Control & Protection of HVDC Schemes
Principles Control & Protection of HVDC Schemes
Power System Operation
 
Reactive Power : Problems and Solutions
Reactive Power : Problems and SolutionsReactive Power : Problems and Solutions
Reactive Power : Problems and Solutions
Abhinav Dubey
 

What's hot (20)

Distribution transformer
Distribution transformerDistribution transformer
Distribution transformer
 
Construction of three phase induction motor
Construction of three phase induction motorConstruction of three phase induction motor
Construction of three phase induction motor
 
Design of shunt active power filter to mitigate harmonic
Design of shunt active power filter to mitigate harmonicDesign of shunt active power filter to mitigate harmonic
Design of shunt active power filter to mitigate harmonic
 
Study of Turbo Generators
Study of Turbo GeneratorsStudy of Turbo Generators
Study of Turbo Generators
 
Distribution Transformer Design (Electrical Machine Design)
Distribution Transformer Design (Electrical Machine Design)Distribution Transformer Design (Electrical Machine Design)
Distribution Transformer Design (Electrical Machine Design)
 
A Project on Transformer Design.pdf
A Project on Transformer Design.pdfA Project on Transformer Design.pdf
A Project on Transformer Design.pdf
 
Short circuit test in brief
Short circuit test in briefShort circuit test in brief
Short circuit test in brief
 
Transformer
TransformerTransformer
Transformer
 
Transformer design by s u khaparkar
Transformer design by s u khaparkarTransformer design by s u khaparkar
Transformer design by s u khaparkar
 
Generator protection by bhushan kumbhalkar
Generator protection by bhushan kumbhalkarGenerator protection by bhushan kumbhalkar
Generator protection by bhushan kumbhalkar
 
Design of transformer
Design of transformerDesign of transformer
Design of transformer
 
Design of substation (with Transformer Design)
Design of substation (with Transformer Design) Design of substation (with Transformer Design)
Design of substation (with Transformer Design)
 
Presentation on 132/33KV BSPTCL(Bodhgaya Substation)
Presentation on 132/33KV BSPTCL(Bodhgaya Substation)Presentation on 132/33KV BSPTCL(Bodhgaya Substation)
Presentation on 132/33KV BSPTCL(Bodhgaya Substation)
 
Transformer Designing
Transformer Designing Transformer Designing
Transformer Designing
 
Three phase transformer ( vector groups)
Three phase  transformer ( vector groups)Three phase  transformer ( vector groups)
Three phase transformer ( vector groups)
 
OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION
OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION
OPTIMAL PLACEMENT OF DISTRIBUTED GENERATION
 
Setp by step design of transformer
Setp by step design of transformerSetp by step design of transformer
Setp by step design of transformer
 
Design of transformer: yoke & core dimensions
Design of transformer: yoke & core dimensionsDesign of transformer: yoke & core dimensions
Design of transformer: yoke & core dimensions
 
Principles Control & Protection of HVDC Schemes
Principles Control & Protection of HVDC SchemesPrinciples Control & Protection of HVDC Schemes
Principles Control & Protection of HVDC Schemes
 
Reactive Power : Problems and Solutions
Reactive Power : Problems and SolutionsReactive Power : Problems and Solutions
Reactive Power : Problems and Solutions
 

Viewers also liked

How to wind 3D wound core?
How to wind 3D wound core?How to wind 3D wound core?
How to wind 3D wound core?
Lydia King
 
Aon Critical Path Method Scheduling บท 9
Aon Critical Path Method Scheduling บท 9Aon Critical Path Method Scheduling บท 9
Aon Critical Path Method Scheduling บท 9orarick
 
Transformers
TransformersTransformers
Transformers
PAWAN KUMAR JANGID
 
The influences of T-joint core design on no-load losses in transformers
The influences of T-joint core design on no-load losses in transformersThe influences of T-joint core design on no-load losses in transformers
The influences of T-joint core design on no-load losses in transformers
Upwork
 
4การคัดเลือกโครงการ
4การคัดเลือกโครงการ4การคัดเลือกโครงการ
4การคัดเลือกโครงการ
pop Jaturong
 
2การบริหารองค์การด้วยโครงการ
2การบริหารองค์การด้วยโครงการ2การบริหารองค์การด้วยโครงการ
2การบริหารองค์การด้วยโครงการ
pop Jaturong
 
7เทคนิคบริหารโครงการด้วยcpm pert
7เทคนิคบริหารโครงการด้วยcpm pert7เทคนิคบริหารโครงการด้วยcpm pert
7เทคนิคบริหารโครงการด้วยcpm pert
pop Jaturong
 
The transformer
The transformerThe transformer
The transformer
Srajan Raj
 
บทที่ 10 การบริหารโครงการ
บทที่ 10 การบริหารโครงการบทที่ 10 การบริหารโครงการ
บทที่ 10 การบริหารโครงการ
Rungnapa Rungnapa
 
การบริหารโครงการ
การบริหารโครงการการบริหารโครงการ
การบริหารโครงการNuch Sake
 
การประเมินโครงการลงทุน
การประเมินโครงการลงทุนการประเมินโครงการลงทุน
การประเมินโครงการลงทุน
Naphaphat Niyomjan
 
การตัดสินใจในการลงทุนโครงการ Revised24042014
การตัดสินใจในการลงทุนโครงการ Revised24042014การตัดสินใจในการลงทุนโครงการ Revised24042014
การตัดสินใจในการลงทุนโครงการ Revised24042014Wanida Kook
 
บทที่ 3 การจัดการโครงการ
บทที่ 3 การจัดการโครงการบทที่ 3 การจัดการโครงการ
บทที่ 3 การจัดการโครงการ
Dr.Krisada [Hua] RMUTT
 
Testing of transformer
Testing of transformerTesting of transformer
Testing of transformer
vikasgupta1965
 
กิจกรรมเพื่อสังคมและสาธารณะประโยชน์
กิจกรรมเพื่อสังคมและสาธารณะประโยชน์กิจกรรมเพื่อสังคมและสาธารณะประโยชน์
กิจกรรมเพื่อสังคมและสาธารณะประโยชน์
จตุรพล ชานันโท
 
บทที่ 1 การจัดการการผลิตและการปฏิบัติการ
บทที่ 1 การจัดการการผลิตและการปฏิบัติการบทที่ 1 การจัดการการผลิตและการปฏิบัติการ
บทที่ 1 การจัดการการผลิตและการปฏิบัติการ
Dr.Krisada [Hua] RMUTT
 
โครงการจิตอาสาพัฒนาวัด
โครงการจิตอาสาพัฒนาวัดโครงการจิตอาสาพัฒนาวัด
โครงการจิตอาสาพัฒนาวัด
พัน พัน
 
บทที่ 7 การวางแผนกระบวนการผลิต
บทที่ 7 การวางแผนกระบวนการผลิตบทที่ 7 การวางแผนกระบวนการผลิต
บทที่ 7 การวางแผนกระบวนการผลิต
Dr.Krisada [Hua] RMUTT
 
Top 52 mep engineer interview questions and answers pdf
Top 52 mep engineer interview questions and answers pdfTop 52 mep engineer interview questions and answers pdf
Top 52 mep engineer interview questions and answers pdf
keyjonh724
 
Transformer construction,types and working
Transformer construction,types and workingTransformer construction,types and working
Transformer construction,types and working
maharshi dayanand university rohtak
 

Viewers also liked (20)

How to wind 3D wound core?
How to wind 3D wound core?How to wind 3D wound core?
How to wind 3D wound core?
 
Aon Critical Path Method Scheduling บท 9
Aon Critical Path Method Scheduling บท 9Aon Critical Path Method Scheduling บท 9
Aon Critical Path Method Scheduling บท 9
 
Transformers
TransformersTransformers
Transformers
 
The influences of T-joint core design on no-load losses in transformers
The influences of T-joint core design on no-load losses in transformersThe influences of T-joint core design on no-load losses in transformers
The influences of T-joint core design on no-load losses in transformers
 
4การคัดเลือกโครงการ
4การคัดเลือกโครงการ4การคัดเลือกโครงการ
4การคัดเลือกโครงการ
 
2การบริหารองค์การด้วยโครงการ
2การบริหารองค์การด้วยโครงการ2การบริหารองค์การด้วยโครงการ
2การบริหารองค์การด้วยโครงการ
 
7เทคนิคบริหารโครงการด้วยcpm pert
7เทคนิคบริหารโครงการด้วยcpm pert7เทคนิคบริหารโครงการด้วยcpm pert
7เทคนิคบริหารโครงการด้วยcpm pert
 
The transformer
The transformerThe transformer
The transformer
 
บทที่ 10 การบริหารโครงการ
บทที่ 10 การบริหารโครงการบทที่ 10 การบริหารโครงการ
บทที่ 10 การบริหารโครงการ
 
การบริหารโครงการ
การบริหารโครงการการบริหารโครงการ
การบริหารโครงการ
 
การประเมินโครงการลงทุน
การประเมินโครงการลงทุนการประเมินโครงการลงทุน
การประเมินโครงการลงทุน
 
การตัดสินใจในการลงทุนโครงการ Revised24042014
การตัดสินใจในการลงทุนโครงการ Revised24042014การตัดสินใจในการลงทุนโครงการ Revised24042014
การตัดสินใจในการลงทุนโครงการ Revised24042014
 
บทที่ 3 การจัดการโครงการ
บทที่ 3 การจัดการโครงการบทที่ 3 การจัดการโครงการ
บทที่ 3 การจัดการโครงการ
 
Testing of transformer
Testing of transformerTesting of transformer
Testing of transformer
 
กิจกรรมเพื่อสังคมและสาธารณะประโยชน์
กิจกรรมเพื่อสังคมและสาธารณะประโยชน์กิจกรรมเพื่อสังคมและสาธารณะประโยชน์
กิจกรรมเพื่อสังคมและสาธารณะประโยชน์
 
บทที่ 1 การจัดการการผลิตและการปฏิบัติการ
บทที่ 1 การจัดการการผลิตและการปฏิบัติการบทที่ 1 การจัดการการผลิตและการปฏิบัติการ
บทที่ 1 การจัดการการผลิตและการปฏิบัติการ
 
โครงการจิตอาสาพัฒนาวัด
โครงการจิตอาสาพัฒนาวัดโครงการจิตอาสาพัฒนาวัด
โครงการจิตอาสาพัฒนาวัด
 
บทที่ 7 การวางแผนกระบวนการผลิต
บทที่ 7 การวางแผนกระบวนการผลิตบทที่ 7 การวางแผนกระบวนการผลิต
บทที่ 7 การวางแผนกระบวนการผลิต
 
Top 52 mep engineer interview questions and answers pdf
Top 52 mep engineer interview questions and answers pdfTop 52 mep engineer interview questions and answers pdf
Top 52 mep engineer interview questions and answers pdf
 
Transformer construction,types and working
Transformer construction,types and workingTransformer construction,types and working
Transformer construction,types and working
 

Similar to Transformer with 3D wound core

Cg distribution-transformers
Cg distribution-transformersCg distribution-transformers
Cg distribution-transformers
prevrtljivac
 
unit-iv.pptx
unit-iv.pptxunit-iv.pptx
unit-iv.pptx
SachinPatel642858
 
Single phase induction motor Design.pptx
Single phase induction motor Design.pptxSingle phase induction motor Design.pptx
Single phase induction motor Design.pptx
FaisalSheraz4
 
RGPV First sem BE104 Unit iii
RGPV First sem BE104 Unit iiiRGPV First sem BE104 Unit iii
RGPV First sem BE104 Unit iii
Mani Deep Dutt
 
RGPV EX503 UNIT III
RGPV EX503 UNIT IIIRGPV EX503 UNIT III
RGPV EX503 UNIT III
Mani Deep Dutt
 
EE402 SEM Module 1 PMDC&BLDC.pptx
EE402 SEM Module 1 PMDC&BLDC.pptxEE402 SEM Module 1 PMDC&BLDC.pptx
EE402 SEM Module 1 PMDC&BLDC.pptx
RahulR27101
 
Dimensional and Constructional Details of Components, Fundamentals of TNM Met...
Dimensional and Constructional Details of Components, Fundamentals of TNM Met...Dimensional and Constructional Details of Components, Fundamentals of TNM Met...
Dimensional and Constructional Details of Components, Fundamentals of TNM Met...
IJERA Editor
 
1228808532(2)
1228808532(2)1228808532(2)
1228808532(2)
rachidlouni1
 
Wind Turbine generator
Wind Turbine generatorWind Turbine generator
Wind Turbine generator
Mohamed Abe EL-Naby
 
Design of stator & rotor for Wound Induction Motor
Design of stator & rotor for Wound Induction MotorDesign of stator & rotor for Wound Induction Motor
Design of stator & rotor for Wound Induction Motor
Parth Patel
 
Industrial training report
Industrial training report Industrial training report
Industrial training report
Pritam Samanta
 
The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...
The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...
The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...
IOSRJEEE
 
Design and Implementation of BLDC Motor with Integrated Drive Circuit
Design and Implementation of BLDC Motor with Integrated Drive CircuitDesign and Implementation of BLDC Motor with Integrated Drive Circuit
Design and Implementation of BLDC Motor with Integrated Drive Circuit
International Journal of Power Electronics and Drive Systems
 
Winding Arrangement of a New Type Hollow Rotor BLDC Motor
Winding Arrangement of a New Type Hollow Rotor BLDC MotorWinding Arrangement of a New Type Hollow Rotor BLDC Motor
Winding Arrangement of a New Type Hollow Rotor BLDC Motor
International Journal of Power Electronics and Drive Systems
 
Design Of 1 KW DC Motor
Design Of 1 KW DC Motor   Design Of 1 KW DC Motor
Design Of 1 KW DC Motor
IRJET Journal
 
MEDSI 2016 Poster_A0_STB V2
MEDSI 2016 Poster_A0_STB V2MEDSI 2016 Poster_A0_STB V2
MEDSI 2016 Poster_A0_STB V2
Stephen Barrett
 
DC GENERATORS
DC GENERATORS DC GENERATORS
DC GENERATORS
kypameenendranathred
 
Forming Process Rolling.pptx_20230922_194250_0000.pdf
Forming Process Rolling.pptx_20230922_194250_0000.pdfForming Process Rolling.pptx_20230922_194250_0000.pdf
Forming Process Rolling.pptx_20230922_194250_0000.pdf
sahils237192101
 
Tbea vocatinal training
Tbea vocatinal trainingTbea vocatinal training
Tbea vocatinal training
Deep Shah
 
Cane V2
Cane V2Cane V2

Similar to Transformer with 3D wound core (20)

Cg distribution-transformers
Cg distribution-transformersCg distribution-transformers
Cg distribution-transformers
 
unit-iv.pptx
unit-iv.pptxunit-iv.pptx
unit-iv.pptx
 
Single phase induction motor Design.pptx
Single phase induction motor Design.pptxSingle phase induction motor Design.pptx
Single phase induction motor Design.pptx
 
RGPV First sem BE104 Unit iii
RGPV First sem BE104 Unit iiiRGPV First sem BE104 Unit iii
RGPV First sem BE104 Unit iii
 
RGPV EX503 UNIT III
RGPV EX503 UNIT IIIRGPV EX503 UNIT III
RGPV EX503 UNIT III
 
EE402 SEM Module 1 PMDC&BLDC.pptx
EE402 SEM Module 1 PMDC&BLDC.pptxEE402 SEM Module 1 PMDC&BLDC.pptx
EE402 SEM Module 1 PMDC&BLDC.pptx
 
Dimensional and Constructional Details of Components, Fundamentals of TNM Met...
Dimensional and Constructional Details of Components, Fundamentals of TNM Met...Dimensional and Constructional Details of Components, Fundamentals of TNM Met...
Dimensional and Constructional Details of Components, Fundamentals of TNM Met...
 
1228808532(2)
1228808532(2)1228808532(2)
1228808532(2)
 
Wind Turbine generator
Wind Turbine generatorWind Turbine generator
Wind Turbine generator
 
Design of stator & rotor for Wound Induction Motor
Design of stator & rotor for Wound Induction MotorDesign of stator & rotor for Wound Induction Motor
Design of stator & rotor for Wound Induction Motor
 
Industrial training report
Industrial training report Industrial training report
Industrial training report
 
The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...
The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...
The Determination of Effects of Primary and Secondary Geometry of Tubular Lin...
 
Design and Implementation of BLDC Motor with Integrated Drive Circuit
Design and Implementation of BLDC Motor with Integrated Drive CircuitDesign and Implementation of BLDC Motor with Integrated Drive Circuit
Design and Implementation of BLDC Motor with Integrated Drive Circuit
 
Winding Arrangement of a New Type Hollow Rotor BLDC Motor
Winding Arrangement of a New Type Hollow Rotor BLDC MotorWinding Arrangement of a New Type Hollow Rotor BLDC Motor
Winding Arrangement of a New Type Hollow Rotor BLDC Motor
 
Design Of 1 KW DC Motor
Design Of 1 KW DC Motor   Design Of 1 KW DC Motor
Design Of 1 KW DC Motor
 
MEDSI 2016 Poster_A0_STB V2
MEDSI 2016 Poster_A0_STB V2MEDSI 2016 Poster_A0_STB V2
MEDSI 2016 Poster_A0_STB V2
 
DC GENERATORS
DC GENERATORS DC GENERATORS
DC GENERATORS
 
Forming Process Rolling.pptx_20230922_194250_0000.pdf
Forming Process Rolling.pptx_20230922_194250_0000.pdfForming Process Rolling.pptx_20230922_194250_0000.pdf
Forming Process Rolling.pptx_20230922_194250_0000.pdf
 
Tbea vocatinal training
Tbea vocatinal trainingTbea vocatinal training
Tbea vocatinal training
 
Cane V2
Cane V2Cane V2
Cane V2
 

Recently uploaded

みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...
みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...
みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...
名前 です男
 
20240609 QFM020 Irresponsible AI Reading List May 2024
20240609 QFM020 Irresponsible AI Reading List May 202420240609 QFM020 Irresponsible AI Reading List May 2024
20240609 QFM020 Irresponsible AI Reading List May 2024
Matthew Sinclair
 
Columbus Data & Analytics Wednesdays - June 2024
Columbus Data & Analytics Wednesdays - June 2024Columbus Data & Analytics Wednesdays - June 2024
Columbus Data & Analytics Wednesdays - June 2024
Jason Packer
 
Serial Arm Control in Real Time Presentation
Serial Arm Control in Real Time PresentationSerial Arm Control in Real Time Presentation
Serial Arm Control in Real Time Presentation
tolgahangng
 
AI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdf
AI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdfAI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdf
AI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdf
Techgropse Pvt.Ltd.
 
GraphRAG for Life Science to increase LLM accuracy
GraphRAG for Life Science to increase LLM accuracyGraphRAG for Life Science to increase LLM accuracy
GraphRAG for Life Science to increase LLM accuracy
Tomaz Bratanic
 
CAKE: Sharing Slices of Confidential Data on Blockchain
CAKE: Sharing Slices of Confidential Data on BlockchainCAKE: Sharing Slices of Confidential Data on Blockchain
CAKE: Sharing Slices of Confidential Data on Blockchain
Claudio Di Ciccio
 
Best 20 SEO Techniques To Improve Website Visibility In SERP
Best 20 SEO Techniques To Improve Website Visibility In SERPBest 20 SEO Techniques To Improve Website Visibility In SERP
Best 20 SEO Techniques To Improve Website Visibility In SERP
Pixlogix Infotech
 
TrustArc Webinar - 2024 Global Privacy Survey
TrustArc Webinar - 2024 Global Privacy SurveyTrustArc Webinar - 2024 Global Privacy Survey
TrustArc Webinar - 2024 Global Privacy Survey
TrustArc
 
Fueling AI with Great Data with Airbyte Webinar
Fueling AI with Great Data with Airbyte WebinarFueling AI with Great Data with Airbyte Webinar
Fueling AI with Great Data with Airbyte Webinar
Zilliz
 
HCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAUHCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAU
panagenda
 
Removing Uninteresting Bytes in Software Fuzzing
Removing Uninteresting Bytes in Software FuzzingRemoving Uninteresting Bytes in Software Fuzzing
Removing Uninteresting Bytes in Software Fuzzing
Aftab Hussain
 
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Driving Business Innovation: Latest Generative AI Advancements & Success StoryDriving Business Innovation: Latest Generative AI Advancements & Success Story
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Safe Software
 
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
Your One-Stop Shop for Python Success: Top 10 US Python Development ProvidersYour One-Stop Shop for Python Success: Top 10 US Python Development Providers
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
akankshawande
 
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfUnlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
Malak Abu Hammad
 
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUHCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
panagenda
 
Programming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup SlidesProgramming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup Slides
Zilliz
 
Microsoft - Power Platform_G.Aspiotis.pdf
Microsoft - Power Platform_G.Aspiotis.pdfMicrosoft - Power Platform_G.Aspiotis.pdf
Microsoft - Power Platform_G.Aspiotis.pdf
Uni Systems S.M.S.A.
 
UiPath Test Automation using UiPath Test Suite series, part 6
UiPath Test Automation using UiPath Test Suite series, part 6UiPath Test Automation using UiPath Test Suite series, part 6
UiPath Test Automation using UiPath Test Suite series, part 6
DianaGray10
 
Generating privacy-protected synthetic data using Secludy and Milvus
Generating privacy-protected synthetic data using Secludy and MilvusGenerating privacy-protected synthetic data using Secludy and Milvus
Generating privacy-protected synthetic data using Secludy and Milvus
Zilliz
 

Recently uploaded (20)

みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...
みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...
みなさんこんにちはこれ何文字まで入るの?40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの?えこ...
 
20240609 QFM020 Irresponsible AI Reading List May 2024
20240609 QFM020 Irresponsible AI Reading List May 202420240609 QFM020 Irresponsible AI Reading List May 2024
20240609 QFM020 Irresponsible AI Reading List May 2024
 
Columbus Data & Analytics Wednesdays - June 2024
Columbus Data & Analytics Wednesdays - June 2024Columbus Data & Analytics Wednesdays - June 2024
Columbus Data & Analytics Wednesdays - June 2024
 
Serial Arm Control in Real Time Presentation
Serial Arm Control in Real Time PresentationSerial Arm Control in Real Time Presentation
Serial Arm Control in Real Time Presentation
 
AI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdf
AI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdfAI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdf
AI-Powered Food Delivery Transforming App Development in Saudi Arabia.pdf
 
GraphRAG for Life Science to increase LLM accuracy
GraphRAG for Life Science to increase LLM accuracyGraphRAG for Life Science to increase LLM accuracy
GraphRAG for Life Science to increase LLM accuracy
 
CAKE: Sharing Slices of Confidential Data on Blockchain
CAKE: Sharing Slices of Confidential Data on BlockchainCAKE: Sharing Slices of Confidential Data on Blockchain
CAKE: Sharing Slices of Confidential Data on Blockchain
 
Best 20 SEO Techniques To Improve Website Visibility In SERP
Best 20 SEO Techniques To Improve Website Visibility In SERPBest 20 SEO Techniques To Improve Website Visibility In SERP
Best 20 SEO Techniques To Improve Website Visibility In SERP
 
TrustArc Webinar - 2024 Global Privacy Survey
TrustArc Webinar - 2024 Global Privacy SurveyTrustArc Webinar - 2024 Global Privacy Survey
TrustArc Webinar - 2024 Global Privacy Survey
 
Fueling AI with Great Data with Airbyte Webinar
Fueling AI with Great Data with Airbyte WebinarFueling AI with Great Data with Airbyte Webinar
Fueling AI with Great Data with Airbyte Webinar
 
HCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAUHCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAU
 
Removing Uninteresting Bytes in Software Fuzzing
Removing Uninteresting Bytes in Software FuzzingRemoving Uninteresting Bytes in Software Fuzzing
Removing Uninteresting Bytes in Software Fuzzing
 
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Driving Business Innovation: Latest Generative AI Advancements & Success StoryDriving Business Innovation: Latest Generative AI Advancements & Success Story
Driving Business Innovation: Latest Generative AI Advancements & Success Story
 
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
Your One-Stop Shop for Python Success: Top 10 US Python Development ProvidersYour One-Stop Shop for Python Success: Top 10 US Python Development Providers
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
 
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfUnlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
 
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUHCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
 
Programming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup SlidesProgramming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup Slides
 
Microsoft - Power Platform_G.Aspiotis.pdf
Microsoft - Power Platform_G.Aspiotis.pdfMicrosoft - Power Platform_G.Aspiotis.pdf
Microsoft - Power Platform_G.Aspiotis.pdf
 
UiPath Test Automation using UiPath Test Suite series, part 6
UiPath Test Automation using UiPath Test Suite series, part 6UiPath Test Automation using UiPath Test Suite series, part 6
UiPath Test Automation using UiPath Test Suite series, part 6
 
Generating privacy-protected synthetic data using Secludy and Milvus
Generating privacy-protected synthetic data using Secludy and MilvusGenerating privacy-protected synthetic data using Secludy and Milvus
Generating privacy-protected synthetic data using Secludy and Milvus
 

Transformer with 3D wound core

  • 2. Definition (GB25438-2010) 1. Terms and definition Terms and definition in GB 1094.1, GB/T 2900.15 and below are applied in this standard. 2. Three dimensional wound core Core combined by three single wound core frames with the same size to form a 3D triangle. 3. Distribution transformer with 3D wound core Distribution transformer with magnetic circuit of 3D wound core
  • 3. Structural analysis and evolution of core Innovation of core structure In traditional lamination stacked core with air gap, coupled magnetic circuit of A-C phase is 1/2 longer than that of A-B and B-C, so the magnetic circuit is not balance, reluctance of A-C phase is bigger. (See figure 1) When three-phase voltage is applied to the transformer, three-phase balanced flux ΦA, φB and φC are generated on the core. When three- phase balanced flux goes through unbalanced magnetic circuit, magnetic pressure on phase A and C is big, which affects three-phase voltage balance. Imbalance on the magnetic loop is a structural defect which cannot be overcome for transformer with plane core. Fig. 1 Structure of plane core
  • 4. Plane wound core is without seam, saving weight on 4 corners, which is suitable to single phase transformer. In 1940s, 500KVA transformer with wound core (shell type) in Moscow transformer factory. In 1960s, transformer with single phase wound core was applied in China. In 1986, the first 30kVA transformer with three-phase closed wound core was manufactured in Shanghai. In 1990s, industry equipment and technology were imported from Japan and Sweden to China, and trial production started. Plane core AC intersecting chain flux AB intersecting chain flux BC intersecting chain flux Saving 4 corners compared to stacked core
  • 5. For symmetry of three-phase magnetic circuit – It has been… Yoke Yoke Core limb
  • 6. Single frames and combination Fig. 2 Arrangement of 3D cores and single frames
  • 7.  Compared with traditional transformer structure with lamination stacked core, transformer with 3D wound core is a kind of new and high performance transformer with more reasonable structure, better performance and lower producing cost. Great popularization and wide use of this transformer will greatly save sources of energy and material with remarkable economic profit. Therefore, this kind of transformer will catch general attention and interest.  The whole 3D wound core is composed by three identical single frames, and three core limbs of the combined core are arranged in equilateral triangle. Each single frame is wound by several ladder shaped material strips continuously and orderly, and the cross section of wound single frame is near semicircle, and the combined cross section is quasi- polygon which is very close to a circle.  Different size of ladder-shaped strips for winding single frame can be got by suit cut on special curve slitting machine. This kind of suit cut is without waste material, which is to say the utilization rate of material is 100% during suit cut.
  • 8.
  • 9. Advantages in six aspects  Saving material and reducing manufacturing cost: 20% silicon steel and 5% wire can be saved compared with that of plane three-phase lamination stacked core with the same capacity, thus it obviously reduces manufacturing cost, which is very popular with any transformer manufacturer and customer.  Improving performance: with the same core and magnetic flux density, no-load loss is reduced by around 15% compared with that of transformer with plane lamination stacked core.  Greatly reducing no-load current: no-load current is reduced by 70~80% compared with that of transformer with plane stacked core.  Reducing noise obviously: 10 decibel is reduced compared with that of transformer with plane lamination stacked core. (5 decibel reduced for open type)  Improving production efficiency: for open type wound core, core winding and coiling winding can be carried out at the same time, which improves production efficiency by more than 50%; reparation is much easier.  Three-phase balance: because of different three-phase magnetic path length, no-load loss on two side frames of the transformer with plane three-phase stacked core is 20% more than that on the central column; while no-load loss on three core limbs of the transformer with three-phase 3 D triangular wound core are the same because of the same magnetic path length of three core limbs, so three-phase balance is perfect.
  • 10. Advantage ContinuousContinuous windingwinding AnnealingAnnealing IncreasingIncreasing magneticmagnetic performanceperformance and loweringand lowering technologytechnology coefficientcoefficient Reducing no-Reducing no- load currentload current Reducing no-Reducing no- load lossload loss SymmetricSymmetric al layoutal layout IndependentIndependent symmetricalsymmetrical looploop Three-Three- phasephase balancebalance No three timesNo three times harmonic waveharmonic wave FasteningFastening without airwithout air gapgap ReducingReducing noisenoise ShortShort magneticmagnetic circuitcircuit ReducingReducing load lossload loss High fill factorHigh fill factor and laminatedand laminated coefficientcoefficient
  • 11. Advantages Open type coreOpen type core winding andwinding and coil windingcoil winding can be carriedcan be carried out at the sameout at the same time.time. Easy reparation ImprovingImproving efficiencyefficiency Lessen humanLessen human factor to havefactor to have stable qualitystable quality ManufacturinManufacturin g of core andg of core and windingwinding needs specialneeds special equipment.equipment. A little investment on equipment It is used forIt is used for thin materialthin material processing.processing. Product withProduct with highhigh performanceperformance and low lossand low loss SavingSaving materialmaterial Small size / light weight, loweringSmall size / light weight, lowering cost and good looking appearancecost and good looking appearance
  • 12. Slitting machine, Rewinding machine and Winding machine
  • 13. Winding of single frame is on the special winding machine for 3D wound core. While winding this kind of material strips, the winding machine can automatically finish a 30 degree angle with precision on material to assure the well binding between surfaces on combining three single frames.
  • 16. Annealing under vacuum During manufacturing of wound core, as silicon steel experienced transportation, loading and unloading, slitting and winding process, stress generates on the cold-rolled silicon steel and then affects its magnetic performance. To recover its grain orientation and realize ordered arrangement of the grain inside the steel and to recover its magnetic performance as much as it leaves factory, stress shall be removed under the condition that insulation coating is not damaged, and the core needs annealing. During annealing, there is no phase change on silicon steel, no grain size change or structure change, only magnetism is recovered. Verified by testing, no-load loss on the core after annealing is reduced obviously. Rising time Preserving time Cooling down time Temperature
  • 17. Annealing under vacuum  Annealing is mostly affected by annealing equipment, temperature, time (temperature rising, preserving and decreasing), silicon steel grade, and quantity put in oven, core diameter, atmosphere in oven, which makes technology coefficient of core loss with large dispersion.  Annealing consumes large quantity of power.