This presentation is about basics of capacitor and energy efficient motors.

2. Capacitors
A capacitorisadevicethat storeselectric charge.
A capacitor consistsof two conductorsseparated by an
insulator.
Capacitorshavemany applications:
Radiosand electronic circuits.
Fans, motor e.t.c.
Thereare2 typesof capacitor.
 Fixed capacitorswith fixed capacitancevaluesand
variablecapacitorswith variable(or adjustable)
capacitancevalues.

3. A fixed capacitor isconstructed in such manner that it
possessesafixed valueof capacitancewhich cannot be
adjusted. A fixed capacitor isclassified according to thetype
of material used asitsdielectric, such aspaper, oil, mica, or
electrolyte.

4. VARIABLE CAPACITOR
A variablecapacitor isconstructed in such manner that its
valueof capacitancecan bevaried.
E.g tunearadio
Symmetric diagram of capactor

5. Capacitors and Capacitance
Charge Q stored:
CVQ =
Thestored chargeQ isproportional to thepotential difference
Vbetween theplates. ThecapacitanceCistheconstant of
proportionality, measured in Farads.
Farad = Coulomb /Volt
A capacitor in a simple
electric circuit.

6. ENERGY EFFICIENT MOTOR

7. Energy Efficiency Purpose
Thepurposeof energy efficient motorsisto beableto supply
thesamelevel of energy serviceonly using lessenergy.
Efficient energy useisachieved primarily by meansof amore
efficient technology or processrather than by changesin
individual behavior.
Energy conservation reducestheenergy consumption.

8. Efficiency
 Definition of "efficiency".
 For an electric motor, efficiency istheratio of mechanical
power delivered by themotor (output) to theelectrical
power supplied to themotor (input).
Efficiency = (Mechanical Power Output / Electrical Power
Input) x 100%

9. Thus, amotor that is85 percent efficient converts85
percent of theelectrical energy input into mechanical
energy.
Theremaining 15 percent of theelectrical energy is
dissipated asheat, evidenced by arisein motor
temperature.
Energy efficient electric motorsutilizeimproved motor
design and high quality materialsto reducemotor losses,
thereforeimproving motor efficiency.

10. Description of motor component’s losses
Copperloss:
Iron loss:
Friction and windage loss:

12. Cost of energy efficient motors:
Usually it is of normal cost and slightly more than
the normal motors. It is about 15% to 30% more
than the normal motors.
In Future, the initial cost may be available at the
same cost as a standard motor when the
population of EE Motors increases

13. Advantages
The EEM has a greater efficiency than a standard motor;
therefore they have less operating costs.
EEM has a lower slip so they have a higher speed than
standard motor.
EEM can reduce maintenance costs and improve
operations in industry due to robustness and reliability.

14. Application
Energy efficient motors are specially suited for
industries which are power intensive and equipments
which run on constant load for long duration.
For example: fans, blowers, pumps, compressors etc. are
some of the driven equipments and industries such as
textile, paper, cement, power generation etc.

15. THANK YOU