Design, analysis, and testing of I-type electromagnetic actuator used in single-coil active magnetic bearing

Active magnetic bearing consists of different parts, an actuator being the essential part of that. Depending on construction, electromagnetic power in various actuator structures is unique. This paper offers an experimental description of the study using simulation and evaluation of an I-type single-axis active magnetic bearing. The test will be carried out with multiple air gaps in simulation and then results will be implemented in hardware. An I-type actuator has a more attractive force than any other form and is also easy to design. Here, three configurations are prepared to verify the resistance, inductance profile, and attraction force. A DC and AC test is performed to measure resistance and inductance. A ferromagnetic object is known to be a rotor below the electromagnet or actuator is placed to measure the inductance profile and attraction force by increasing the air gap. Simulation and experimental results are analyzed and compared with the proposed system and presented in this manuscript.