Power Electronics 1

• forstå og analysere kendte og nye konverter kredsløb
• identificere de almindelige reguleringsmetoder (current mode/voltage mode). som anvendes i Switch mode konvertere
• vurdere fordele og ulemper ved forskellige Switch mode topologier i forhold til en given applikation
• dimensionere ferrit-transformatorer til Switch mode konvertere
• dimensionere spoler til Switch mode konvertere
• dimensionere input filtre til Switch mode konvertere
• dimensionere output filtre til Switch mode konvertere
• foretage simple beregninger/simuleringer af feed-back kredsløbet i en Switch mode konverter
• vurdere egnetheden og anvendelsesmulighederne for forskellige effektelektronikkomponenter, aktive som passive
• lave et grundlæggende design af en converter ud fra en given applikation

Section 1: Course Introduction
Section 2: Non-isolation DC-DC Converters
Basic concepts and definitions; Analysis of basic power circuits: Buck, Boost, and Buck-Boost; Calculation of components stress factors.
Section 3: Isolation DC-DC Converters
Choice and analysis of Isolated converter topologies: Flyback, Forward, Push-Pull, Half-Bridge, Full-Bridge, SEPIC, Cuk; Steady state transfer functions; Voltages and currents waveforms in the circuit; Continuous and discontinuous conduction mode; Selection of power-semiconductors and passive components; Snubber circuits.
Section 4: Magnetic Components Design
Basic magnetic theory; Transformer and inductor models; Loss models; High frequency skin and proximity effects; Transformers & Inductors design examples.
Section 5: Input filter & Output filter Design
Output filter design considerations: voltage ripple, load step, ESR. Input filter design criterias: high frequency attenuation, Middlebrook’s impedance inequlities theory
Section 6: Controller Design
Feedback loop stability; Choice and design of control and protection circuits (Error-amplifiers, Auxiliary supply, undervoltage – and overvoltage protection, current limit etc.). Driver circuits. PWM-, voltage- and current-mode control.

31351/31001/31003/31039

Oversigts-forelæsninger og projektarbejde.

I kurset vil der blive tilstræbt et tæt industrisamarbejde eller opgaver inspireret af virksomheder. Kurset har en naturlig fortsættelse i 34653 Power Electronics 2, laboratoriekursus. (original course no. 31353)
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