Harvesting Magnetic Energy from Induction Motors: Design and Development of an Energy Harvester

Induction motors are commonly employed for converting electrical power to mechanical power because they are uncomplicated, durable, sturdy, energy-efficient, and appropriate for use in challenging surroundings. An induction motor emits a magnetic field of low magnitude that can be harvested. In most cases, researchers focus on capturing magnetic energy from electrical transmission lines, power plants, and electrical track paths. Though limited studies have been conducted on magnetic energy harvesting from manufacturing machinery, such as an induction motor, the electromagnetic transducer developed employs the clamped current-transformer technique. However, no investigation has been carried out on the extraction of magnetic energy from an induction motor utilizing a clampless current-transformer method, which has similar capabilities for capturing magnetic field energy from an induction motor. The proposed project aims to create an electromagnetic transducer to harvest magnetic energy from an induction motor without a clamp by developing a magnetic field energy harvester. The main goal is to design and build a current transformer to capture magnetic energy from an induction motor. Radiation from magnetic fields is used as an energy-harvesting element to provide voltage performance from the induction motor rod core. The design contrasts stainless steel and carbon steel for the core material. It also consists of cylindrical and square rods for the core shape and 300 or 500 turns for the number of turns. Further, this design provides more flexibility since the transducer does not need to be clamped to the incoming supply to the induction motor; instead, it can be placed anywhere near the engine where the strongest magnetic field exists. The findings demonstrate that a material Carbon Steel long cylindrical core design is the higher output power with 52.95 µW for 500 turns.