This document discusses energy efficient motors. It begins by noting that electric motors consume a major part of industrial energy and that improving motor efficiency can reduce environmental costs. It then defines motor efficiency as the ratio of mechanical power output to electrical power input. Energy efficient motors utilize improved designs and materials to reduce losses and improve efficiency compared to standard motors. Application of efficient motors is suited for industries with constant loads, such as fans, pumps and compressors. In conclusion, replacing standard motors with efficient motors where economical can save energy, money and reduce environmental pollution.

1. ENERGY EFFICIENT MOTOR
PRESENTED BY -
Abhishek Awasthi
EN-14

2. INTRODUCTION
• In the future, the cost of energy will increase due to
environmental problems and limited resources.
• The electric motor consume major part of the electric energy
in the industry.
• The induction motor is the main driven system in the modern
industrial society.
• It would also reduce the production of greenhouse gases and
push down the total environmental cost of electricity
generation.

3. Energy Efficiency Purpose
• The purpose of energy efficient motors is to be able to
supply the same level of energy service only using less
energy.
• Efficient energy use is achieved primarily by means of
a more efficient technology or process rather than by
changes in individual behavior.
• Energy conservation reduces the energy consumption.

4. Efficiency
• Definition of "efficiency".
• For an electric motor, efficiency is the ratio of mechanical
power delivered by the motor (output) to the electrical
power supplied to the motor (input).
• Efficiency = (Mechanical Power Output / Electrical Power
Input) x 100%

5. • Thus, a motor that is 85 percent efficient converts 85
percent of the electrical energy input into mechanical
energy.
• The remaining 15 percent of the electrical energy is
dissipated as heat, evidenced by a rise in motor
temperature.
• Energy efficient electric motors utilize improved motor
design and high quality materials to reduce motor
losses, therefore improving motor efficiency.

6. Description of motor component’s losses
• Copper loss:
• Depends on the effective resistance of motor winding.
• Iron loss:
• Depending on the magnetic structure of core and results
from a combination of hysteresis and eddy current effect
due to change in magnetic field in the motor’s core.
• Friction and windage loss:
• Occurs due to the friction in the bearing of the motor.

7. Construction of EEM

8. Rated hp Standard Motor
High-Efficiency
Motor
10.0 85.2 90.1
20.0 87.8 91.9
30.0 89.1 92.7
50.0 90.5 93.8
100.0 91.8 94.7
150.0 92.9 95.5
200.0 94.0 95.4
Average Full Load Nominal Efficiencies Standard and
Energy Efficient Motors

9. 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.

10. 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.

11. Conclusion
Finally I conclude that most of the industrial loads having
motor are consuming 70% of the total electricity. So it is
better to replace standard motors with EEM where ever
economical. So that
We can
Save energy.
Save money.
Save atmosphere from pollution.

12. THANKYOU