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EXPERTSYSTEMSANDSOLUTIONS
48, North Street, Aranarai, Perambalur, Tamil Nadu, India.
Email ID: expertsyssol@yahoo.com,
Website: www.researchprojects.info
Phone: 9952749533,
Energy conservation in industrial A.C drives
ABSTRACT
The induction motors can be considered the larger users of electrical energy. They are used both
in
industrial and commercial sectors in a wide range of applications, such as: fans, compressors,
pumps,
conveyor, winders, mills, transports, elevators, home appliances and office equipments. In India,
the electric
motors used in the industrial field consume typically the 60 to 70% of the total adsorbed
electrical energy.
In the commercial sector, this percentage is up to 35%.
With reference to industrial sector, a general purpose electrical motor consumes about an annual
quantity of electrical energy equal to 5 times its purchase costs and the motor live can he
evaluated around
10 to 12 years. On the base of these considerations, it is possible to obtain consistent energy
saving if higher
efficiency motors are used in the final applications.
World-wide, there exist several standards for testing electric machinery. For induction motors,
the
four most important are:
IEEE Standard 112-1996
IEC 34-2 and IEC 34-2A
JEC 37
IS 325
Several national standards are harmonized with regard to one of the three general standards
above.
The NEMA MG-1- 1993 standard and the Canadian standard C390 correspond to the IEEE
standard, while
in most of the European countries; the standards are harmonized to IEC 34-2. JEC stands for the
Japanese
standard. The efficiency value obtained from the considered testing standards can differ by
several percent,
as will be shown in the measurement results. Moreover, one standard can contain different
methods that do
not necessarily lead to one firmly determined value.
In this project, international standards are used to evaluate the efficiency of 3.7 KW, 4 pole
three-
phase induction motor and a logic based energy optimizer is developed using the numerical
values obtained
from the above standards.
iii

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Energy conservation in industrial a.c drives - Electrical Machines Projects

  • 1. This document contains text automatically extracted from a PDF or image file. Formatting may have been lost and not all text may have been recognized. To remove this note, right-click and select "Delete table".
  • 3. 48, North Street, Aranarai, Perambalur, Tamil Nadu, India. Email ID: expertsyssol@yahoo.com, Website: www.researchprojects.info Phone: 9952749533, Energy conservation in industrial A.C drives ABSTRACT The induction motors can be considered the larger users of electrical energy. They are used both in industrial and commercial sectors in a wide range of applications, such as: fans, compressors, pumps, conveyor, winders, mills, transports, elevators, home appliances and office equipments. In India, the electric motors used in the industrial field consume typically the 60 to 70% of the total adsorbed electrical energy. In the commercial sector, this percentage is up to 35%. With reference to industrial sector, a general purpose electrical motor consumes about an annual quantity of electrical energy equal to 5 times its purchase costs and the motor live can he evaluated around 10 to 12 years. On the base of these considerations, it is possible to obtain consistent energy saving if higher efficiency motors are used in the final applications. World-wide, there exist several standards for testing electric machinery. For induction motors, the four most important are: IEEE Standard 112-1996 IEC 34-2 and IEC 34-2A JEC 37 IS 325 Several national standards are harmonized with regard to one of the three general standards above. The NEMA MG-1- 1993 standard and the Canadian standard C390 correspond to the IEEE standard, while in most of the European countries; the standards are harmonized to IEC 34-2. JEC stands for the Japanese standard. The efficiency value obtained from the considered testing standards can differ by several percent, as will be shown in the measurement results. Moreover, one standard can contain different methods that do not necessarily lead to one firmly determined value.
  • 4. In this project, international standards are used to evaluate the efficiency of 3.7 KW, 4 pole three- phase induction motor and a logic based energy optimizer is developed using the numerical values obtained from the above standards. iii