Effect of supply voltage - stepper motor , Electrical Engineering

Effect of Supply  Voltage

a.As the applied  as voltage  is increased hysteresis loss increases.

b.Eddy current losses are given by

W e α f2 t2 B2 m

Where Bm =   maximum flux  density in wb /m2

If supply  voltage  is increased flux  due to eddy  current will increase hence  the power  loss will  increase. It means  the  production  of the surface heat  will be  more  if the  applied  voltage is increased.

Induction  heating  is much  superior to electric  resistance heating. In  electric resistance heating the next  of heat transfer is very  less ( l approx 100 w/sq cm or so). However in induction heating  the rate of heat  transfer  can be  as high  as 10000w/sq cm. Because of high  rate  of heating  the rate of production of goods  can be very high moreover the life  of the living  of a high frequency furnace is more  than double  that of  power frequency furnace.  Shows a block  diagram of induction heating . this  complete  system  consist of AC- DC  converter filter and inverter. AC - DC  converter is used to convert 50Hz AC to DC filter is used to  improve the wave shape and inverter is used to give  high  frequency AC.

Induction cooking is  one of the  important  application induction heating. An  electric  or gas cooking  has very  poor efficiency because  appreciable amount of heat is  lost to the  surroundings induction cooking  avoids  this wastage  of heat. Figure shown  a block  diagram  of inaction cooking  rectifiers and filters  are used to  converts 50 Hz AC to smoothened DC an inverter converts this DC into very high frequency  AC which  is then fed to the induction coil. The eddy  currents  in the metal   pan heat the pan and do the cooking.

 

Posted Date: 4/3/2013 3:22:02 AM | Location : United States







Related Discussions:- Effect of supply voltage - stepper motor , Assignment Help, Ask Question on Effect of supply voltage - stepper motor , Get Answer, Expert's Help, Effect of supply voltage - stepper motor Discussions

Write discussion on Effect of supply voltage - stepper motor
Your posts are moderated
Related Questions

Second Generation ( 1954- 1964) After the invention of semiconductor devices mainly transistors size of computer s was reduced a lot computing power increased reliability was

State the function of RS1 and RS0 bits in the flag register of intel 8051 microcontroller? RS1 , RS0 - Register bank select bits RS1   RS0 BankSelection 0        0   Bank

Q. A transistor in a fixed bias amplifier circuit was replaced by another transistor of beta equaling 150 instead of 60.if IB of transistor is equal to 100 microampere and collecto

costruction and working of dc motor

Draw and explain the circuit of feedback amplifier

#queComputers are frequently used in check-writing systems, such as payroll and accounts payable applications. Many stories circulate regarding weekly pay- checks being printed (by

Both DTL and TTL are based on the saturating BJT inverter. The transistor acts as a switch that connects or disconnects the collector and emitter. The switch is closed when suffici

Determine the disadvantages of GPS system -  Maps not up to date hence instructed to carry out an incorrect manoeuvre (for example turn into a road that no longer exists) -