Seminar ppt on electromagnetic clutch

seminar report

1. Electromagnetic Clutch Seminar Guide- Presented by-

2. Introduction Warner Electric designed the first electromagnetic clutch. Electromagnetic clutches operate electrically but transmit torque mechanically. That’s the reason we also called electromechnical clutches.

3. E.M. Clutch Specifications Engagement & disengagement is electrically operated. No linkages are required to control its engagement Easy to handle. High torque to size ratio. Response is fast.

4. Unit of E.M. Clutch

5. Principle Of E.M. Clutch E.M. clutch is simply based on electro-magnetism. Magnetic fields are produced due to circulation of electric current in conducting coils. Direction of magnetic field can be obtain by “right hand rule”.

6. Working of E.M. Clutch Working conditions.. 1. D.C. source. 2. Voltage supply should be same as clutch rating. 3. Constant / non fluctuating power supply. 4. Maintains almost constant operating temperature.

7. Working of E.M. Clutch (Cont..)

8. Engagement Time There are two engagement time to consider. 1. Time take for coil to develop the magnetic field to pull the armature. (i)No. of turns in coil. (ii)Air gap between armature and rotor. 2. Response time of clutch (time to speed). T = (WK 2 x ∆N) / (308 x t).

9. Applications Of E.M. Clutch Machinery. e.g. printing machinery, conveyors, lawnmowers etc. Automobiles. e.g. Outdoor use, in some Renaults cars. Locomotives. e.g. Diesel locomotives.

10. Advantages Of E.M. Clutch Complicated linkage is not required. Wear & tear is almost eliminated. Requires less current with no load condition. It can work on 24V D.C. with low wattage.

11. Disadvantages Of E.M. Clutch Risk of overheating during engagement. High initial cost If the current falls, torque will also decreases.

12. Reference http://www.mechanicalproject.com http://www.seminaronly.com http://www.emclab.umr.edu http://reality.sgi.com/csp/scveme/emcdef.html http://www.howftuffworks.com/gears.htm working of clutch.

13. THANK YOU!