IEEE PEDS 2015 Tutorials

IEEE PEDS 2015 is offering the following tutorial session free of charge, provided that you have already registered with the conference technical sessions. The tutorial sessions do not provide any tea breaks or lunch.

Date Time Speakers Title
9 June 2015 09:30 AM – 12:30 PM Prof. Ralph Kennel Predictive Control - A Simple and Powerful Method to Control Power Converters and Drives
9 June 2015 09:30 AM – 12:30 PM Prof. Mahinda Vilathgamuwa
Prof. Geoff Walker
Dr. Shantha Gamini
Photovoltaic Power Converters
9 June 2015 02:30 PM – 05:30 PM Dr. Petar. J. Grbović Power Electronics Today and Tomorrow - Issues and Solutions-
9 June 2015 02:30 PM – 05:30 PM Dr. Shantha Gamini Electrical Drives for More Electric Ships and Aircrafts – A Review on State of the Art Technologies, Trends and Challenges

Tutorial 1: Predictive Control - A Simple and Powerful Method to Control Power Converters and Drives

Date / Time: 9 June 2015 / 09:30 AM – 12:30 PM

Prof. Ralph Kennel
Technische Universitaet Muenchen


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Scope and Benefits

Up to now the control of electrical power using power converters has been based on the principle of mean value, using pulse width modulation with linear controllers in a cascaded structure.

Recent research works 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 in power electronics in coming decades.

The main advantages of predictive control are:

Contents

Tutorial 2: Photovoltaic Power Converters

Date / Time: 9 June 2015 / 09:30 AM – 12:30 PM

Mahinda Vilathgamuwa
Professor
Queensland University of Technology, Brisbane



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Geoff Walker
Assoc. Professor
Queensland University of Technology, Brisbane



Shantha Gamini
Lecturer
Australian Maritime College
University of Tasmania, Launceston, Tasmania



Synopsis

The generation of photovoltaic (PV) power has seen tremendous increase over the last few decades worldwide. The efficiency, reliability and cost-effectiveness of the power converters used to interface PV panels to the mains grid and other types of off-grid loads are of major concern in the process of system design. This tutorial presents state-of-the-art power electronic converter topologies used in various PV power conversion schemes. It aims to provide the audience with a wide variety of topologies applied in different circumstances, giving the audience the opportunity to make an educated choice for any given application. In addition to power electronic converter topologies, grid-storage techniques and interaction issues between the PV sources and power system will also be discussed.

Content

Introduction, PV inverters, PV dc-dc converters, PV-grid interaction, grid-storage, active power decoupling.

Tutorial 3: Power Electronics Today and Tomorrow - Issues and Solutions-

Date / Time: 9 June 2015 / 02:30 PM – 05:30 PM

Dr. Petar. J. Grbović
HUAWEI Technologies Dusseldorf GmbH, Germany


Synopsis

Power electronics and static power converters play significant role in industrial applications, power generation and transmission, home appliance, transportation, etc., etc. Today, our life will be completely different without power electronics. Power electronics, particularly power semiconductors are progressing on daily bases. Each new generation of power semiconductor introduces new challenges and issues. Some of them make almost impossible to fully utilize full advantages of new power semiconductor devices. Two of the challenges are high di/dt and dv/dt, which in combination with parasitic inductance and capacitance of the power semiconductor and converter create issues of over-voltage, radiated and conducted EMI emission, stress of the load isolation, etc., etc. The above mentioned issues (di/dt and dv/dt) will make impossible to fully utilize all the benefits of future Wide Band Gap devices such as SiC and GaN. New devices packaging is a must. But, where is the limit of a new package? Is it possible to solve the issue with a new package or something more is necessary to be done? This will be intensively discussed in the tutorial.

The tutorial is mainly aimed at Master/PhD students, power electronics engineers and professionals who want to improve their knowledge and understanding of current and future issues and solutions in application of new power semiconductor devices.

Content

I. FUNDAMENTALS OF POWER CONVERSION
Fundamentals and history of power conversion will be briefly presented in the first part of the tutorial.

II. POWER CONVERTERS & TOPOLOGIES
State of the art as well as advanced power converter topologies will be discussed in the second part of the tutorial.

III. ADVANCED POWER SEMICONDUCTOR DEVICES
Advanced power semiconductor devices will be discussed in the third part of the tutorial. Advanced power semiconductors with different voltage or current ratings can be used for a given application. Therefore competition is very open and appropriate design methods must be developed.
For the same reasons, different technologies must also be compared.

IV. NEW ISSUES WITH NEW POWER SEMICONDUCTORS
The current trend in development of power semiconductors is high power density and high switching speed. These two are necessary for further improvement of the converter power density and efficiency. However, this is not the end of the story. Since the device is not ideal, many new issues are created with new power semiconductor devices.

A. Thermal Management
High power density creates the issue of the device thermal management and the device reliability.

High power density of the module requires high performance heat sink with very low spreading thermal impedance. If standard heat sink is used, the temperature gradient under the module may reach 10K to 50K, which turns as additional increase of the device junction temperature.

B. Electromagnetic Field and Related Issues
Power semiconductor device and converters are not ideal. Each power semiconductor module together with entire power converter is characterized by the fact that energy is stored in form of electromagnetic field. Simple speaking, the module and system are characterized by parasitic stray inductance and capacitance. These parasitic have not been considered as an issue in the past. The power semiconductor switching speed was moderate, and therefore there has not been strong impact of the parasitic on the converter operation. However, todays power semiconductors are very fast switching devices. If an ordinary power semiconductor module is used, it creates issues that limit performances of entire converter.

Two major issues are identified

V. POWER ELECTRONICS INTEGRATION: AN ULTIMATE SOLUTION

In this part of the tutorial we will address some solutions for the above discussed issues.

A. Parallel Multilevel Inegration
We will discuss in details the Intelligent Parallel Multilevel Integration (IPMI) as a solution for di/dt issue in low voltage and high current power conversion applications.

B. Series Multilevel Integration
We will discuss in details the Intelligent Series Multilevel Integration (ISMI) as a solution for dv/dt issue in medium and high voltage power conversion applications.

Tutorial 4: Electrical Drives for More Electric Ships and Aircrafts – A Review on State of the Art Technologies, Trends and Challenges

Date / Time: 9 June 2015 / 02:30 PM – 05:30 PM

Shantha Gamini
Lecturer
Australian Maritime College
University of Tasmania, Launceston, Tasmania



Synopsis

The current technology trend in the transport sector is the move from predominantly mechanical based systems to a greater utilization of electrical systems. In land based transportation, ‘electric vehicles’ is a hot research area. In maritime transport, traditional engine driven propulsion systems are increasingly being overtaken by hybrid electric and fully electric propulsion systems. In aircrafts, traditional pneumatic and hydraulic systems are slowly being replaced with electrical drives. All these emerging technologies are based on electrical drives fed through power electronic converters. Therefore, power electronic has become a key technology area that determines the success of more electric technologies (METs), especially in maritime and aviation industries. This tutorial presents an overview of the state of the art METs, trends and challenges in maritime and aviation industries. Moreover, the tutorial is aimed to develop an interest among the power electronic community on METs and inspire researches on developing technologies for the future.

Content