Tutorials: Friday morning
Tutorials : Friday morning (Provisional programme)
Tutorial N° 6
Morning
(9:30 – 13:00)
Multi-objective and highly precise optimization of high performance SiC and GaN multilevel power inverters with severe constraints
- Bernardo Cougo, IRT Saint-Exupery, France
Tutorial Objectives
The objective of this tutorial is to give an overview on how to precisely and quickly optimize high performance converters using disruptive power semiconductor technology (SiC and GaN transistors) associated to multilevel topologies in order to achieve very high efficiency and power density. Besides the general overview about SiC and GaN technology, we focus on the precise characterization of SiC and GaN in order to evaluate their impacts in a power converter. Multilevel topologies and their impact on the system will be explained in details. Furthermore, precise (but fast) models for designing cooling system, input and output common and differential mode filters will be detailed, as well as the impact of PWM methods to increase even more the converter performance.
Tutorial N° 9
Morning
(9:30 – 13:00)
Industrial medium-voltage converters and drives: from components to systems and applications
- Tobias Geyer, ABB Motion System Drives, Switzerland
Tutorial Objectives
This tutorial provides a comprehensive introduction, overview and assessment of medium-voltage converters and drives. Such converters and drives are vital to decarbonize the planet by generating renewable energy and electrifying transportation systems and heavy industry. A particular emphasis is laid on system aspects, i.e., the integration of the transformer, converter, electrical machine and load into a high-performance drive system. To increase the reliability, redundancy can be added on converter level.
To minimize the cost of such drive systems – or conversely – to maximize their hardware capability in terms of rated voltage and current, model predictive pulse pattern control (MP3C) offers a disruptive way of achieving this, as will be shown in this tutorial. The classic control methods, scalar control, field-oriented control and direct torque control will be introduced as well.
Medium-voltage drives are highly tailored to their specific application. As such, the understanding of the key drive applications is vital, including Marine propulsion, rolling mills of the Metals industry, crushers and mine hoists of the Mining industry, Wind power generation, and pumps and compressors used in the Oil and Gas industry.
Besides the classic motoric applications, non-motoric applications such as static frequency converters (SFCs) and power electronics grid simulators are quickly growing in market size. SFCs provide electrical power to berthed ships or remote locations, whereas grid simulators allow the testing and verification of renewable energy systems. Both applications are much more challenging to control and operate than classic variable speed drives, providing fruitful research problems.
This tutorial will introduce the exciting world of medium-voltage converter and drive systems, it will showcase the opportunities they offer, and will point out challenging research problems for academics and researchers working in industry alike.
