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Un nuovo inverter multilivello trifase con singolo circuito intermedio per applicazioni di azionamento di motori a induzione
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ISBN10: 6206253481
ISBN13: 9786206253488
Publisher: Ed Notre Savior
Published: Jul 20 2023
Pages: 84
Weight: 0.30
Height: 0.20 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786206253488
Publisher: Ed Notre Savior
Published: Jul 20 2023
Pages: 84
Weight: 0.30
Height: 0.20 Width: 6.00 Depth: 9.00
Language: Italian
Tutti gli azionamenti industriali necessitano di un'uscita controllata e ciò può essere ottenuto controllando l'alimentazione in ingresso. A questo proposito, il circuito dell'inverter gioca un ruolo importante nelle applicazioni degli azionamenti industriali. Gli azionamenti industriali funzionano a potenza nominale elevata e gli inverter convenzionali non possono essere utilizzati per richieste di potenza elevate a causa dell'elevato dV/dt (velocità di variazione della tensione) e delle maggiori perdite di commutazione. Vengono quindi introdotti gli inverter multilivello per applicazioni ad alta potenza-media tensione. Per tutti gli azionamenti in ca, gli MLI funzionano in modo affidabile. Questa topologia MLI riduce anche le armoniche e lo stress dei cuscinetti di un motore con dV/dt basso. Nella maggior parte delle applicazioni vengono utilizzati inverter multilivello perché possiamo ottenere un numero maggiore di livelli di tensione. Per aumentare il numero di livelli di tensione, il circuito deve avere più interruttori. Ma dobbiamo ottimizzare il conteggio degli interruttori e le operazioni di commutazione. Il livello di potenza dell'inverter è limitato a causa di correnti elevate e sollecitazioni. In questo documento, abbiamo proposto una nuova topologia circuitale che consente agli interruttori di essere attivi a diversi livelli di tensione, provoca la riduzione delle perdite di commutazione e aumenta anche l'efficienza dell'inverter.
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