title: Switch mode power supply for microwave heating based on the Boucherot effect.
abstract: This paper describes a new self-resonating switch-mode power-supply for driving CW magnetrons, based on the Boucherot effect. A detailed circuit analysis is given and its performance is evaluated for an 800 W/2450 MHz magnetron, whilst work at high power driving a magnetron up to 40 kW is reported. A comparison of the supply with the conventional power-supply used in microwave ovens is made and the principal features of the new design are found to be: low energy dissipation under short-circuit conditions, low ripple current and voltage waveforms that result in more precise control in the range 20-100% of rated power, high efficiencies and small size and weight.
authors.affiliation: Department of Engineering, University of Cambridge, United Kingdom.
authors.forename: G E
authors.initials: GE
authors.lastname: Georghiou
authors.forename: R
authors.initials: R
authors.lastname: Meredith
authors.forename: A C
authors.initials: AC
authors.lastname: Metaxas
authors.forename: D
authors.initials: D
authors.lastname: Gurwicz
mesh_terms: D006358:Hot Temperature; D008872:Microwaves