Performance of a Two-Stage Actively Damped LC Filter for GaN/SiC Motor Inverters
| Autor: | Hans Ertl, Goran Stojcic, Franz Maislinger, Laura Siplika |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
05 social sciences 020207 software engineering Topology (electrical circuits) 02 engineering and technology LC circuit Inductor Filter capacitor Capacitance law.invention Noise Capacitor Filter (video) Control theory law 0202 electrical engineering electronic engineering information engineering 0501 psychology and cognitive sciences 050107 human factors |
| Zdroj: | 2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC). |
| DOI: | 10.1109/epepemc.2018.8521984 |
| Popis: | In this paper, the filter performance of a wide-bandgap (WBG) three phase motor inverter with integrated sinusoidal output voltage LC filter is analyzed. To ensure a well damped system behaviour at low losses, an active damping scheme based on filter capacitor feedback is used. Unfortunately, the nonlinear DC-Bias dependent capacitance of the used ceramic capacitors (X7R is used to minimize filter volume) significantly affects the active damping. A symmetrical filter structure sufficiently reduces the capacitors voltage dependency. However, the paper shows that the symmetrical structure also causes negative effects in respective to the filters noise suppression performance. Modifications in the filter topology are reported and analyzed for reducing the impaired noise suppression. The proposed filter scheme finally results in a well damped system behaviour fulfilling established EMC standards according output noise demonstrated by experimental results of a 2 kW/400 V laboratory prototype. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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