What is Energy Conservation in Electrical Machines? | New Topic [2024]

In this note, we will learn about a topic called “What is Energy Conservation in Electrical Machines?” and needs of energy conservation in induction motor and transformer. Welcome to Poly Notes Hub, a leading destination for engineering notes for diploma and degree engineering students.

Author Name: Arun Paul.

What is Energy Conservation in Electrical Machines?

In order to lower energy consumption and advance sustainability, energy conservation in electrical machines refers to the process of limiting energy losses and optimizing efficiency in the operation of motors, generators, transformers, and other electromechanical systems.

Need of energy conservation in electrical systems –

• Efficiency Improvement: The major purpose of energy saving or energy conservation in electric devices is to increase efficiency. Efficiency is defined as the ratio of useful output energy (mechanical work, electrical power output, and so on) to input energy (electric power input). Electrical equipment can be made more efficient by lowering losses and increasing output, resulting in energy conservation.
• Reducing Losses: During operation, electrical machines experience a variety of losses, including copper losses (due to conductor resistance), iron losses (due to hysteresis and eddy currents in magnetic materials), mechanical losses (friction and windage), and stray losses. Energy conservation measures are aimed at reducing these losses through design optimization, material selection, and operational condition improvements.
• Advanced Control Strategies: Using advanced control strategies like variable frequency drives (VFDs), soft starters, and electronic speed controllers can enhance the efficiency of electrical equipment by optimizing their operation based on load demand. These control strategies match the motor speed, voltage, or torque to the needed output, reducing energy waste under partial load or idle conditions.