Switch mode power supply for microwave heating based on the Boucherot effect.
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.
Georghiou
G E
GE
Department of Engineering, University of Cambridge, United Kingdom.
Meredith
R
R
Metaxas
A C
AC
Gurwicz
D
D
D006358:Hot Temperature; D008872:Microwaves