Courses

Module runs in the

• winter semester

Contents

Basic concepts and basic switching elements of electrical circuits

• Electric charges, electric current, electric current density
• Electric potential, electric voltage, electric field strength
• Electrical resistance, Ohm's law
• Energy and power, efficiency

Direct current circuits

• Terms, counting arrows, basic laws
• Basic circuit
• Resistor circuits (passive two-pole)
• Source circuits (active two-pole)
• Calculation of linear DC networks
  • Branch current method, mesh current method, superposition method, node voltage method, two-pole equivalent circuits

Electrostatic field

• Field quantities, basic equations, field and equipotential lines
• Influence, charge and displacement flux density
• Substances (non-conductors) in an electric field
• Polarization and permittivity
• Interfaces in the electrostatic field
• Capacitance, capacitors, capacitor circuits
• Calculation of homogeneous and inhomogeneous electrostatic fields
• Energy and force effects in the electric field

Quasi-stationary electric field

• Displacement current and displacement current density

Stationary electric flow field

• Field quantities, basic equations, field lines
• Analogy considerations between flow field and electric field
• Interfaces in the flow field
• Electrical resistance Calculation of homogeneous and inhomogeneous flow fields

Static and stationary magnetic field

• Field quantities, field description
• Magnetic flux and flux density
• Flow and magnetic field strength Flow law and applications
• Substances in the magnetic field, interfaces Magnetic circuits and their calculation

Quasi-stationary electromagnetic field

• Rest and motion induction, law of induction, coils, inductance
• Self-induction and self-inductance
• Counter-induction and mutual inductance

Module runs in:

• Winter semester

Contents

- Fundamentals of materials scienceConducted by Dr. Ing. J. Reinhold

• Crystalline and amorphous microstructures and bonds
• Alloy formation
• State diagrams
• Deformation mechanisms
• Strength parameters

- Electrical engineering materials (fundamentals, technical materials, manufacturing technologies and test methods)

• Electrical conductor and resistor materials
• contact materials
• Semiconductor materials
• Dielectric materials
• Magnetic materials

Module runs in:

• Summer semester

Contents

Finite element method in mechanics Conducted by Prof. Fulland:

The mechanical and mathematical fundamentals are taught alongside basic knowledge of the calculation process for linear structural calculations using the finite element method. The practical course familiarizes students with the use of a commercial FE program system. Elementary problems relating to statics and dynamics are solved and compared with known solutions.

Finite element method in electrical engineering Conducted by Prof. Kornhuber:

• Calculation of
  • stationary flow field
  • stationary and quasi-stationary electric field
  • stationary and quasi-stationary magnetic field with closed method
  • Introduction of Maxwell's DGLsIntroduction of the finite difference method and application to practical examples
  • Introduction of the finite element method and application to practical known examples using available software systems

Module runs in:

• Summer semester

Contents

• Electrical stresses on high-voltage insulation and their simulation in the high-voltage laboratory (testing technology)
• Calculation of space-charge-free electrostatic fields, single-material and multi-material insulation
• Electrical breakdown of air and gas insulation
• Flashover of insulation with solid-gas interfaces
• Electrical breakdown of insulation with liquid and solid insulating materials
• Dimensioning of high-voltage insulation, insulation coordination Lightning discharges

Module runs in:

• Winter semester

Contents

• Contact theory:
  • Contact models
  • Constriction and external layer resistance
  • Heating on contact pieces
  • Contact shapes and materials
• Switching arc:
  • Static and dynamic arcing
  • Potential curve
  • Extinguishing the direct and alternating current arc
  • Transient voltage
  • Re-ignition mechanisms
• Switching processes:
  • Switching short-circuit currents on and off
  • Distance short circuit
  • Phase opposition
  • Switching off small inductive and capacitive currents
• Low-voltage switchgear:
  • Classification and tasks
  • (current-limiting) circuit-breakers
  • Load-break switches
  • Disconnectors
  • Circuit breakers
  • RCDs
• Fuses:
  • Current-time integral
  • Melting time-current characteristic
  • Current limitation
  • Selectivity
  • Backup protection
• High-voltage switchgear:
  • Classification and tasks
  • Circuit breakers
  • Extinguishing principles
  • Switch drives
  • Multiple interruption
  • Disconnecting section
  • Disconnector
  • Load-break switch
  • Earthing switch
  • Special switching devices (on-load tap-changers, changeover switches, HVDC switches)
  • Switch testing
  • Switch diagnostics
• Surge protective devices:
  • Classification and tasks
  • Arresters with spark gaps
  • Metal oxide arresters
• Switchgear:
  • Tasksand classification
  • Low, medium and high-voltage systems

Module runs in:

• Winter semester

Contents

• Generation and measurement of high test voltages
• Static evaluation of measurement results
• Partial discharge measurement technology and diagnostics
• Selected high-voltage insulation and systems (design, test methods, long-term behavior)

Module runs in:

• Winter semester

Contents

• Fundamentals of asset management
• Reliability and risk management
• Maintainability of devices and systems
• Technical stresses and ageing models
• Implementation of specific strategic approaches
• Fundamentals of technical diagnostics and their application to electrical energy systems and systems in the process industry: infrared diagnostics, partial discharge diagnostics, diagnosis of mechanical motion sequences, gas-in-oil diagnostics, etc.