05. - 07.06.2018
PCIM Europe 2018
Power Electronics | Intelligent Motion | Renewable Energy | Energy Management


Tutorial 4

High Performance Control of Power Converters


Monday, 04.06.2018, 09:00 - 17:00 hrs


Arvena Park Hotel Nuremberg, Görlitzer Str. 51, 90473 Nuremberg


09:00 High Performance Control of Power Converters
Prof. Christian Peter Dick, Cologne University of Applied Sciences, Köln, Deutschland
Prof. Dr. Jens Onno Krah, Cologne University of Applied Sciences, Köln, Deutschland
Utilizing power electronic based converter technology is a key approach to build energy efficient solutions. Due to the innovation cycles of the semiconductor suppliers the size and the cost of the more and more complex inverter systems is not increasing. However, especially the new fast switching wide bandgap devices (SiC & GaN) are challenging the control hardware. The advanced control architectures are covered by discussing algorithms and possible implementations using µC, DSP and FPGA technology. Robust controller designs with well-defined set up procedures or reliable self-tuning algorithms can help to use these innovations utilizing a reasonable set-up time.

1. Converter Design Basics
State-machine based dead time generation
2-Level / 3-Level Inverter - including Energy Efficiency Classes
Gate driver basics

2. Inverter Modulation Techniques
Single Phase Modulator
Pulse Width vs. Pulse Frequency Modulation
2-Level / 3-Level SVM

3. Analog to Digital Conversion
Sigma-Delta DAC versus R-2R DAC and PWM
Sigma-Delta Modulation
Sinc³ decimation filtering
Efficient FIR implementations, Demonstration, Examples

4. Current Sensing
Transducer versus shunt
Synchronous sampling
Aliasing, EMI suppression
2 vs. 3 current probes in 3~ Loads

5. Current Control
Hysteresis Control
Sampling Control
Synchronous Control (FOC): Clarke, Park, decoupling
Hybrid control
(single-phase) PLL
Dead-Time Compensation
Special Controls: Flyback, resonant LLC

6. Current Prediction
Modeling the Plant
Smith Predictor
Current Observer

7. Parameter Tuning
Theoretical background
Parameter estimation

8. Conclusion and Future Trends

Who should attend?

This tutorial will be especially valuable for engineers and PhD's who address the following control aspects:
- Digital Motion Control
- Mains Control, including PFC
- High-Bandwidth Sensor Circuitry including Robust Signal Transmission
- Modulation Techniques
- Controller Implementation using FPGA
- Controls-Related Novel Converter Issues like Wide-Bandgap Devices


Speaker detail

Mr. Christian Peter Dick
Prof. Christian Peter Dick
Cologne University of Applied Sciences, Köln, Deutschland
Christian P. Dick studied Electrical Engineering at RWTH Aachen University, Germany, where he also received his PhD degree. Beginning of 2011 he joined SMA Solar Technology AG as director for advance development of solar converters up to 20kW. He is now professor for power electronics and electrical drives at Cologne University of Applied Sciences. His main research interests are resonant converters with focus on magnetics, and the large-scale utilization of renewable energy.
Professor Jens Onno Krah
Prof. Dr. Jens Onno Krah
Cologne University of Applied Sciences, Köln, Deutschland
Prof. Jens Onno Krah studied electrical engineering at the Bergische Universität Wuppertal and received his doctorate in 1993 from Prof. Holtz in the field of electric machine and drive research. Until February 2004 he was Technical Director responsible for the development of Kollmorgen Servo Drives. Since 2004 Prof. Krah has been teaching control technology, motion control, FPGA-based digital signal processing and functional safety at the TH Köln. The research focus is on the development of robust, safety-related and energy-efficient inverter control with programmable hardware.