Projeto e controlo para conversores ressonantes de alta frequência

Projeto e controlo para conversores ressonantes de alta frequência

Jin Zhao

154,52 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
ISBN:
9786203891126
154,52 €
IVA incluido
Disponible

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Em comparação com o conversor tradicional de modulação por largura de pulso (PWM), o conversor ressonante pode reduzir efetivamente a perda de comutação, de modo a que a frequência de funcionamento possa ser melhorada. Quanto maior for a frequência de funcionamento do conversor, mais pequenos serão o transformador, o indutor e o condensador. Além disso, a forma de onda que muda suavemente e a menor taxa de variação da tensão e da corrente também ajudam a melhorar a compatibilidade electromagnética do conversor ressonante. No entanto, o conversor ressonante requer uma rede ressonante composta por um certo número de indutores e condensadores, o que torna a sua análise e conceção mais complicadas. Ao conceber cuidadosamente a rede ressonante, o conversor ressonante pode obter um bom desempenho num ponto de funcionamento ou próximo deste, sendo difícil obter um bom desempenho numa vasta gama de condições de tensão de entrada e de carga. Além disso, os problemas de tolerância e de envelhecimento da rede ressonante também colocam alguns desafios à conceção do conversor ressonante.

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