AC circuit filter → attenuate high frequency noise, in series with current pathway, from harmonics in AC current → “AC choke” or “ AC power choke”
Maintain inductance over specified frequency range
+ Low parasitic capacitance → High self-resonant frequency > 5MHz *
* High inductance or inductors with many turns → lower self-resonant frequency
| Voltage (RMS/peak) | 800V / 900V |
| Current (RMS/peak) | 50A / 100A |
| Current Ripple * | 2A - 5A |
| Maximum Power ** | 20kW |
| DC Resistance | ~10mΩ |
| Inductance | < 1 mH |
| Q Factor | ~ 1 |
| Frequency *** | 10kHz - 1MHz |
* Higher frequency/Lower duty-cycle → lower current ripple
** Power range can be extended when necessary
*** High frequencies, especially above 300kHz, will limit power handling
Passive filters
Resonant and phase-shift converters/inverter topologies
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