2. Variable-frequency power supply
2.1 Waveforms
Today, asynchronous machine speed variation is mainly achieved by varying the stator frequency of cage-type asynchronous machines. Current inverters or switches, once used for forced commutation, are no longer used since the emergence and development of semiconductors controlled on both opening and closing (IGBT: insulator gate bipolar transistor, GTO: gate turn off...). The vast majority of inverters with asynchronous machines use the two-level voltage inverter, consisting of three identical...
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Variable-frequency power supply
Transient regimes. Stability
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