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Orientador(es)
Resumo(s)
A new methodology to reset an inductive load during the operation of solid-state bipolar Marx modulators is analyzed. In fact, after applying a positive (or negative) pulse to an inductive load, the reset of the magnetizing energy is evaluated considering the application of a voltage amplitude ranging from one to all capacitors voltage after each pulse: i) immediately after the pulse; ii) with a delay after the pulse. These reset alternatives make it possible to produce several current waveforms that can be used to produce magnetic fields used today in magnetic therapy. Four-stage laboratory prototypes of two bipolar Marx modulators have been assembled using 1200 V insulated gate bipolar transistors (IGBTs) and matching diodes, to operate at 1 kV dc input voltage. Outputs are 4-kV bipolar pulses, 0.5% duty ratio, into inductive load and 1 kHz frequency.
Descrição
Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2018 do Instituto Politécnico de Lisboa. Código de referência IPL/2018/MiPrEquaTe_ISEL
Palavras-chave
Pulsed power systems Solid-state bipolar Marx modulators Inductive loads Magnetizing energy recovery
Contexto Educativo
Citação
CANACSINH, Hiren; REDONDO, Luís; SILVA, José Fernando – Solid-state bipolar Marx modulators and generation of complementary pulses recovering the energy of the magnetizing inductances. In IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society. Lisbon, Portugal: IEEE, 2019. ISBN 978-1-7281-4878-6. Pp. 2002-2006
Editora
Institute of Electrical and Electronics Engineers