Micro and Nano Scale Electric Machines and Applications of Power Electronics

This paper addresses fundamental issues that would bring into effect the power electronic control of micro and nano scale electric machines. The paper takes the step-by-step approach of developing a control strategy that is described in two stages namely the machine stage and the power electronic drive stage. A brief overview of two popular types of micro and nano electric machines namely the electrostatic and electromagnetic and the scaling of various machine related physical magnitudes are presented in the machine analysis stage. The drive stage analysis is carried out by presenting the non-steady state dynamic performance of the machine and the application of control strategies to realize a complete micro/nano control system. The area of nano power electronics and motor drives have recently been the most intensive area of concentration for researchers of all fields including electronics and electrical engineering, biotechnology, physics, and chemistry. Nano scale machinery drives are now bringing new phase of power generation and distribution concepts. These would define the latest advancements in the solid-state device technology to make nanometer dimensional nano power switches and devices to be operated for molecular scale circuits and devices. Micro and nano scale electromechanical systems, which function with many nano scale elements, are very useful for different purposes in medical science and many other areas.