110
Design of Inductive Components
Main emphasis is placed on analytical
methods for the calculation of loss mech-
anisms within the core and the winding
as well as on the derivation of equivalent
circuit models for high frequency and
large signal operation.
Maxwell’s Theory
The whole spectrum of electromagnetic
field theory is covered, beginning from
stationary field problems up to high
frequencies:
•
Fundamental problems of technical
electrodynamics
•
Calculation of electromagnetic fields
Industrial Cooperation, Research and
Technology Transfer
•
Optimization of switched mode power
supplies
•
EMC analyses and measurements
•
Dimensioning of magnetics for power
electronics
•
Calculation of electromagnetic fields
Research at LEMF
The chair of Electromagnetic Fields is lead
by Prof. Dr.-Ing. Manfred Albach. In ad-
dition to fundamental problems of tech-
nical electrodynamics, the core research
areas include electromagnetic compatibil-
ity, power electronics and the design of
magnetic components.
Power Electronics
This research area focuses on conversion
circuits for small and medium power lev-
els. Such converters can be found in con-
sumer electronics, communication and
information technology, lighting, tele-
communications, automotive and medi-
cal technologies.
•
Resonant as well as soft-switching
pulse width modulated topologies for
the optimization (efficiency, volume
and weight) of power supplies
•
Electronic ballasts for lighting applica-
tions
•
Optimization of power supply systems
under industrial constraints
•
Digital control techniques of switched
mode power supplies for the improve-
ment of their stationary and transient
behaviour, e. g. for medical applications
•
Examination of critical components,
such as switching behaviour of MOS-
FETs and diodes, large signal properties
of magnetics, driver circuits
•
Software aided design of switched
mode power supplies with respect to
specification requirements – multi-level
simulation
Electromagnetic Compatibility
… is the ability of an electrical device or
system to operate satisfactorily in its elec-
tromagnetic environment without caus-
ing interferences for surrounding equip-
ment and without being influenced by
external interferences.
•
EMC of electronic modules and com-
ponents
•
Mains current distortion (power factor
correction circuits)
•
Conducted and radiated interferences
•
Susceptibility of electronic modules
and components
In addition to theoretical examinations,
also EMC measurements are performed
within the laboratories of the chair.
Friedrich-Alexander-Universität Erlangen-Nürnberg
Shielded chamber for EMC testing
Simulated loss distribution in magnetic components
Characterisation set-up for LED drivers
