Power electronics is a branch of electrical engineering that deals with the control and conversion of electrical power. It involves the design and study of electronic devices and systems that are used to manipulate and regulate electric power, typically in the form of converting energy from one form to another, such as AC to DC or vice versa. Power electronics is used in a wide range of applications, including power supplies, renewable energy systems, electric vehicles, and motor drives. Researchers in this field work on developing efficient and reliable power conversion systems, as well as improving the performance and efficiency of existing power electronic devices.