computer aided ppt
TRANSCRIPT
Presented by,1.Nayan Kosare2.Kunal Dhakate 3.Sneha Dhote4.Shridhika
……
COMPUTER APPLICATION IN ELECTRICAL MACHINE DESIGN
DID YOU
KNOW
…machine design can be achieved by…..
Judgement
..to achieve higher accuracy and minimum time for manual design…
Intuition
…user friendly..
Understanding
…performance, cost, life, operating range, maintenance…
1950, “Common Design Procedure”, an approach to the problems of electrical machine design…
• 1956, Wlliams and Moore - application of digital computers for design of rotating machine• 1956, Veinott -application of digital computers for design of induction motor
1959, Heroz’et - concept of acceptable approaches to machine design 1. Analysis method 2. Synthesis method
Analysis method
...use of computer only for the purpose of analysis leaving all exercise of judgement to the designer..
Advantages –1.Easy2.Time saving3.Simple4.Acceptable result
Synthesis method
…provides an optimum design such that the program or computer run does not interrupted for the designer to take logical decisions…
Advantages –1.Time saving2.Decision making by computers
Computer aided design of transformer
…for the design with the rating upto 1 MVA oil immersed type three phase transformer…
Core design
1. Square 2. Cruciform3. 3- Stepped4. 4- Stepped
Window dimensions
1.Self oil cooled upto 50 KVA 2.Current density 1.1 to 2.3 A/mm
sqr3.Flux density in window section is
same as that of in core section4.For water cooled type, current
density is 5.4 to 6.2 A/mm sqr
Yoke design
1. Area of the yoke is 15 to 25 % larger than that of core2. May be rectangular or stepped3. In rectangular shape, yoke highest side of the laminated core is taken as depth of the yoke
Low voltage winding design
1.Line voltage depend upon type of connection
2.Helical, cylindrical, cross over
3.Based on the area of conductor
High voltage winding1.Voltage per coil depends upon
type of winding2.Voltage between layers should
not exceed 300 V3.For current below 20 A, cross
over winding is used otherwise helical winding is used
So, what does it all mean?
COMPUTER APPLICATION
IN ELECTRICAL MACHINE DESIGN
NOW YOU
KNOW