Halbach magnet arrays in electromagnetic kinetic energy harvesters: A review

The expanding use of wireless electronic devices in the future will require compact and efficient external power sources due to the limitations of conventional batteries. Kinetic energy harvesters offer a viable solution for powering these devices. Among the different types of kinetic harvesters, electromagnetic harvesters stand out due to their notable efficiency. This paper focuses on the utilization of the Halbach array (HA) in electromagnetic kinetic energy harvesting systems. The HA is a specific arrangement of magnets that leads to a stronger magnetic field on the desired side. The article aims to provide a thorough examination of the HA and categorize the diverse range of systems that have employed this arrangement. Insights from this study contribute to a comprehensive understanding of the applications of HAs. The article concludes with key findings, implications, and future research directions in the field of HA.