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Controlo da velocidade do motor DC sem escovas utilizando um controlador DSP
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ISBN10: 6209469132
ISBN13: 9786209469138
Publisher: Edicoes Nosso Conhecimento
Published: Jan 4 2026
Pages: 56
Weight: 0.19
Height: 0.13 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209469138
Publisher: Edicoes Nosso Conhecimento
Published: Jan 4 2026
Pages: 56
Weight: 0.19
Height: 0.13 Width: 6.00 Depth: 9.00
Language: Portuguese
A caracterÃstica mais importante do motor CC sem escovas é a configuração de comutação mecânica constituÃda por comutador e escovas, que são substituÃdos por circuitos de comutação eletrónica. Resolve os inconvenientes causados pela comutação mecânica. O motor BLDC requer menos manutenção devido à ausência de escovas, permitindo o funcionamento em todas as velocidades com carga nominal. Proporciona alta eficiência, tamanho reduzido e manutenção reduzida, além de oferecer uma faixa de velocidade mais alta; por isso, os motores BLDC são usados em um grande número de aplicações, como na área médica, ventiladores, drones, transporte, veÃculos elétricos, navios elétricos, automóveis e automação. Em áreas especializadas, como quando os sensores de posição não funcionam em altas temperaturas, este sistema desempenha um papel importante. Os motores CC sem escovas, como os ventiladores, são menores em tamanho e peso do que os ventiladores CA que utilizam motores de polo sombreado ou universais. Os motores BLDC podem funcionar com fontes de baixa tensão, como alimentação de 24 V ou 12 V CC, devido ao que os motores BLDC podem ser utilizados em pequenos ventiladores, em equipamentos eletrónicos, acionamentos de eixo, equipamentos móveis, têm alta eficiência e capacidade de reverter rapidamente.
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