Ralph KENNEL
Professor, Department of Electrical Power Systems and Power Electronics, Technical University of Munich, GERMANY
Research interests:
encoderless control of ac drives, predictive control of power converters and drives, optimal gate control of high power devices, hardware-in-the-loop systems for real-time control of ac drives
Keynote address:
Predictive Control - the Powerful Method to Control Power Converters and Drives in the Future
Abstract:
The control of power converters and electrical drives is usually based on the principle of linear control in a cascaded structure, using pulse width modulation (PWM)and considering mean values of the state variables. Recent research projects have demonstrated that it is possible to use Predictive Control to control electrical energy with the use of power converters, without using modulators and linear controllers. This is a new approach that will have a strong impact on control of power electronics and electrical drives in coming decades. The main advantages of predictive control are:
• Concepts are very intuitive and easy to understand and can be applied to a great variety of systems.
• Multivariable systems can be easily considered.
• Dead times can be compensated and non-linearities of the system (like limitations and constraints) can be easily considered in the model.
• The resulting controller is easy to implement, because the so-called cost function allows to define the optimal behaviour without compromises.
This methodology is open to include modifications and extensions depending on specific applications.
The keynote will present:
• The basic concepts and ideas.
• Different types of predictive controllers.
• Examples of predictive controllers of Power Electronics and Electrical Drives.
• Concepts are very intuitive and easy to understand and can be applied to a great variety of systems.
• Multivariable systems can be easily considered.
• Dead times can be compensated and non-linearities of the system (like limitations and constraints) can be easily considered in the model.
• The resulting controller is easy to implement, because the so-called cost function allows to define the optimal behaviour without compromises.
This methodology is open to include modifications and extensions depending on specific applications.
The keynote will present:
• The basic concepts and ideas.
• Different types of predictive controllers.
• Examples of predictive controllers of Power Electronics and Electrical Drives.
Ralph KENNEL was born in 1955 at Kaiserslautern (Germany). In 1979 he got his diploma degree and in 1984 his Dr.-Ing. (Ph.D.) degree from the University of Kaiserslautern. From 1983 to 1999 he worked on several positions with Robert BOSCH GmbH (Germany). Until 1997 he was responsible for the development of servo drives. Dr. Kennel was one of the main supporters of VECON and SERCOS interface, two multi-company development projects for a microcontroller and a digital interface especially dedicated to servo drives. Furthermore he took actively part in the definition and release of new standards with respect to CE marking for servo drives.
Between 1997 and 1999 Dr. Kennel was responsible for "Advanced and Product Development of Fractional Horsepower Motors" in automotive applications. His main activity was preparing the introduction of brushless drive concepts to the automotive market.
From 1994 to 1999 Dr. Kennel was appointed Visiting Professor at the University of Newcastle-upon-Tyne (England, UK). From 1999 - 2008 he was Professor for Electrical Machines and Drives at Wuppertal University (Germany). Since 2008 he is Professor for Electrical Drive systems and Power Electronics at the Technical University of Munich (Germany). His main interests today are: sensorless control of AC drives, predictive control of power electronics and Hardware-in-the-Loop systems.
Dr. Kennel is a Senior Member of IEEE, a Fellow of IEE and a Chartered Engineer in the UK. Within IEEE he was Vice President for Meetings of the Power Electronics society (PELS) from 2007 to 2010, today he is ECCE Global Partnership Chair of IEEE-PELS as well as Treasurer of the Germany Section as well as Vice President for Meetings of the Power Electronics society (PELS). For the period 2012 and 2013 he is elected Distinguished Lecturer of IEEE-PELS.
From 1994 to 1999 Dr. Kennel was appointed Visiting Professor at the University of Newcastle-upon-Tyne (England, UK). From 1999 - 2008 he was Professor for Electrical Machines and Drives at Wuppertal University (Germany). Since 2008 he is Professor for Electrical Drive systems and Power Electronics at the Technical University of Munich (Germany). His main interests today are: sensorless control of AC drives, predictive control of power electronics and Hardware-in-the-Loop systems.
Dr. Kennel is a Senior Member of IEEE, a Fellow of IEE and a Chartered Engineer in the UK. Within IEEE he was Vice President for Meetings of the Power Electronics society (PELS) from 2007 to 2010, today he is ECCE Global Partnership Chair of IEEE-PELS as well as Treasurer of the Germany Section as well as Vice President for Meetings of the Power Electronics society (PELS). For the period 2012 and 2013 he is elected Distinguished Lecturer of IEEE-PELS.
