Registration deadline: 19 April 2021
Power amplifiers are used in high-precision applications such as high accuracy positioning systems (e.g. semiconductor lithography), where any error in the current translates to a positioning error; magnetic resonance imaging, where current errors directly relate to image distortion; audio amplifiers; electron microscopy, and so forth. Most of these applications require high voltages and high currents (up to MW levels), while maximum current and voltage errors are in the ppm range. In comparison, inverters for grid applications are found in the same power range, but a THD of a few percent is often deemed quite acceptable. Moreover, high precision applications typically require much larger bandwidths (up to 100s of kHz) with almost zero phase delay, making modelling and control very important topics as well. Such challenges require the engineer to take a vastly different design approach compared to more traditional applications, such as traction inverters.
This tutorial is aimed at engineers and researchers who are engaged in power electronics, and want to improve their background knowledge and understanding of high precision systems and converters, including recent developments and future trends. Various academic sessions cover a range of fundamental topics such as component modeling, topologies, and compensation techniques. Industry sessions are included to give detailed insight in the challenges and solutions for several state-of-the-art high-tech applications.