I find that lot of spam is coming in comments and hence I have blocked the comments.
Kindly send comments to : kastury@mtnl.net.in
or
you can post these to http://groups.yahoo.com/group/electricalmotordesigners/
Thanks
Sunday, March 04, 2007
Friday, February 23, 2007
DESIGN OF MOTORS
Technology is advancing.
Latest softwares are available. For motor designers, we have Dos/UNIX/LINUX/Windows etc based Text/Graphic analytical as well as Finite Element based software for motor design.
Life, hence, is simple for a motor designer. No worry about formulae, no worry about mistakes in calculations, no worry about reading wrong set of graphs for material data - every thing taken care of by the software - and its developer.
Well - the software developer has taken all (?) factors while developing the software. HAS HE ?
But - let us think how he developed the software.
Well - why we should apply our mind to this ? We have a beautiful software, we are using it and are happy - are we not ? Why worry about how he develped the software !
Let us have an analogy. We drive a vehicle - say a car. We know all the controls and are able to steer it around and go wherever we want. We want to know something more about the car - like some basics of putting it right if it breaks down.
But do we want to know about what makes the engine run ? What are the elements of the transmission system ? About the Brake system ? May be a little for some basic knowledge.
But - suppose we want to study the car to make a better car - well, why should we want to do this? Well- sombody is doing and developing a newer car - is he not ? Why not we do it?
May be one in million car users would venture to study AUTOMOBILE DESIGN to make a better car. He will study all the theory about the engine combustion, fuel compositions, ignition systems, better materials - and eventually he will develop a car which is more efficient, more safe, more comfortable , more everything - at lesser cost.
Well - this should also apply to the Motor Design Tools - like software - sombody somewhere has to develop newer and newer software for Motor Design. Motor Applications, Motor Efficiencies, Motor Reliablity - and what not.
A motor designer who wants to develop this type of software has to know the theory thoroughly - he must know the fundamentals, the formulae, the applications.
THE ONLY WAY TO DO IS BY NOT USING ANY READY MADE SOFTWARE !
Do manual calculations using paper, pencil, calculator ( may be Spreadsheets) again and again - vary the constants and see the effect on the results ! Compare with test results of the motor and redo this a number of times - may be 1000 or more designs. Then one can get the hang of the basic ALGORITHM to use in the software.
Develop new FEA, ANALYTICAL or Graphic software - test it gain and again.
Comment to:
http://groups.yahoo.com/group/electricalmotordesigners/
BEST OF LUCK.
Latest softwares are available. For motor designers, we have Dos/UNIX/LINUX/Windows etc based Text/Graphic analytical as well as Finite Element based software for motor design.
Life, hence, is simple for a motor designer. No worry about formulae, no worry about mistakes in calculations, no worry about reading wrong set of graphs for material data - every thing taken care of by the software - and its developer.
Well - the software developer has taken all (?) factors while developing the software. HAS HE ?
But - let us think how he developed the software.
Well - why we should apply our mind to this ? We have a beautiful software, we are using it and are happy - are we not ? Why worry about how he develped the software !
Let us have an analogy. We drive a vehicle - say a car. We know all the controls and are able to steer it around and go wherever we want. We want to know something more about the car - like some basics of putting it right if it breaks down.
But do we want to know about what makes the engine run ? What are the elements of the transmission system ? About the Brake system ? May be a little for some basic knowledge.
But - suppose we want to study the car to make a better car - well, why should we want to do this? Well- sombody is doing and developing a newer car - is he not ? Why not we do it?
May be one in million car users would venture to study AUTOMOBILE DESIGN to make a better car. He will study all the theory about the engine combustion, fuel compositions, ignition systems, better materials - and eventually he will develop a car which is more efficient, more safe, more comfortable , more everything - at lesser cost.
Well - this should also apply to the Motor Design Tools - like software - sombody somewhere has to develop newer and newer software for Motor Design. Motor Applications, Motor Efficiencies, Motor Reliablity - and what not.
A motor designer who wants to develop this type of software has to know the theory thoroughly - he must know the fundamentals, the formulae, the applications.
THE ONLY WAY TO DO IS BY NOT USING ANY READY MADE SOFTWARE !
Do manual calculations using paper, pencil, calculator ( may be Spreadsheets) again and again - vary the constants and see the effect on the results ! Compare with test results of the motor and redo this a number of times - may be 1000 or more designs. Then one can get the hang of the basic ALGORITHM to use in the software.
Develop new FEA, ANALYTICAL or Graphic software - test it gain and again.
Comment to:
http://groups.yahoo.com/group/electricalmotordesigners/
BEST OF LUCK.
DESIGN OF MOTORS
Technology is advancing.
Latest softwares are available. For motor designers, we have Dos/UNIX/LINUX/Windows etc based Text/Graphic analytical as well as Finite Element based software for motor design.
Life, hence, is simple for a motor designer. No worry about formulae, no worry about mistakes in calculations, no worry about reading wrong set of graphs for material data - every thing taken care of by the software - and its developer.
Well - the software developer has taken all (?) factors while developing the software. HAS HE ?
But - let us think how he developed the software.
Well - why we should apply our mind to this ? We have a beautiful software, we are using it and are happy - are we not ? Why worry about how he develped the software !
Let us have an analogy. We drive a vehicle - say a car. We know all the controls and are able to steer it around and go wherever we want. We want to know something more about the car - like some basics of putting it right if it breaks down.
But do we want to know about what makes the engine run ? What are the elements of the transmission system ? About the Brake system ? May be a little for some basic knowledge.
But - suppose we want to study the car to make a better car - well, why should we want to do this? Well- sombody is doing and developing a newer car - is he not ? Why not we do it?
May be one in million car users would venture to study AUTOMOBILE DESIGN to make a better car. He will study all the theory about the engine combustion, fuel compositions, ignition systems, better materials - and eventually he will develop a car which is more efficient, more safe, more comfortable , more everything - at lesser cost.
Well - this should also apply to the Motor Design Tools - like software - sombody somewhere has to develop newer and newer software for Motor Design. Motor Applications, Motor Efficiencies, Motor Reliablity - and what not.
A motor designer who wants to develop this type of software has to know the theory thoroughly - he must know the fundamentals, the formulae, the applications.
THE ONLY WAY TO DO IS BY NOT USING ANY READY MADE SOFTWARE !
Do manual calculations using paper, pencil, calculator ( may be Spreadsheets) again and again - vary the constants and see the effect on the results ! Compare with test results of the motor and redo this a number of times - may be 1000 or more designs. Then one can get the hang of the basic ALGORITHM to use in the software.
Develop new FEA, ANALYTICAL or Graphic software - test it gain and again.
BEST OF LUCK.
Latest softwares are available. For motor designers, we have Dos/UNIX/LINUX/Windows etc based Text/Graphic analytical as well as Finite Element based software for motor design.
Life, hence, is simple for a motor designer. No worry about formulae, no worry about mistakes in calculations, no worry about reading wrong set of graphs for material data - every thing taken care of by the software - and its developer.
Well - the software developer has taken all (?) factors while developing the software. HAS HE ?
But - let us think how he developed the software.
Well - why we should apply our mind to this ? We have a beautiful software, we are using it and are happy - are we not ? Why worry about how he develped the software !
Let us have an analogy. We drive a vehicle - say a car. We know all the controls and are able to steer it around and go wherever we want. We want to know something more about the car - like some basics of putting it right if it breaks down.
But do we want to know about what makes the engine run ? What are the elements of the transmission system ? About the Brake system ? May be a little for some basic knowledge.
But - suppose we want to study the car to make a better car - well, why should we want to do this? Well- sombody is doing and developing a newer car - is he not ? Why not we do it?
May be one in million car users would venture to study AUTOMOBILE DESIGN to make a better car. He will study all the theory about the engine combustion, fuel compositions, ignition systems, better materials - and eventually he will develop a car which is more efficient, more safe, more comfortable , more everything - at lesser cost.
Well - this should also apply to the Motor Design Tools - like software - sombody somewhere has to develop newer and newer software for Motor Design. Motor Applications, Motor Efficiencies, Motor Reliablity - and what not.
A motor designer who wants to develop this type of software has to know the theory thoroughly - he must know the fundamentals, the formulae, the applications.
THE ONLY WAY TO DO IS BY NOT USING ANY READY MADE SOFTWARE !
Do manual calculations using paper, pencil, calculator ( may be Spreadsheets) again and again - vary the constants and see the effect on the results ! Compare with test results of the motor and redo this a number of times - may be 1000 or more designs. Then one can get the hang of the basic ALGORITHM to use in the software.
Develop new FEA, ANALYTICAL or Graphic software - test it gain and again.
BEST OF LUCK.
Sunday, June 19, 2005
SLIP RING MOTOR
Can a slip ring motor be converted to Sqirrel Cage rotor motor?
What wpold be the effect on the performance?
What wpold be the effect on the performance?
Tuesday, January 18, 2005
TWO SPEED MOTOR WINDING
Standard winding for 2/4 poles is
6 Group WindingStandard winding for 4/8 poles is
8 Group WindingThese are applicable to all
Stator slots - 12, 18, 24, 36, 48, 54, 72 etcUse coil pitch
proportionately.All Double Layer.
High Speed 2YY low Speed Delta
Constant Torque
Monday, January 03, 2005
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