April 2025
Intermediate to advanced
598 pages
16h 46m
Portuguese (Portugal, Brazil)
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Capítulo 4. Sistemas de energia
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Fornecer energia ao sistema pode ser uma questão simples, mas para sistemas complexos pode transformar-se num problema de design significativo. A alimentação e a ligação à terra (P&G) são comuns a todo o sistema e podem ser um ponto de falha com fumo, um caminho comum para o ruído em todo o sistema, ou um caminho onde a procura de energia num local afecta o desempenho noutro local.
Energia CA segura, cenários de falha seguros, questões de conformidade regulamentar, níveis de ruído adequados na energia, ciclos de energia controlados de subida/descida e energia estável sob cargas altamente variáveis fazem todos parte de um sistema fiável. O objetivo é compreender as opções disponíveis entre os conversores de energia e como configurar o sistema de energia. Raramente é necessário conceber de raiz um conversor CA/CC , uma vez que estão disponíveis muitos conversores prontos a utilizar que são facilmente implementados num sistema.
Após a conversão inicial de energia AC/DC, são normalmente necessários itens adicionais como regulação local, tensões múltiplas para circuitos diferentes, bypass de alta frequência, desacoplamento seletivo de dispositivos, monitores de energia e controlos de ciclos de energia. Além disso, existem vários cenários de fonte de energia: bateria descartável, bateria com capacidade de carregamento, conversor AC/DC ...
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