Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1993-10-21
1997-08-05
Wong, Peter S.
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
363101, G05F 156
Patent
active
056546262
ABSTRACT:
A boost-converter with low losses having a series connection of an energy storing main inductor and a main diode connected between a first input terminal for a first voltage and a first output terminal for a second, higher dc-voltage. The centre point between the components connected in series is, via a controllable switching element, connected to a common second input and output terminal. A control circuit for the switching element is provided to monitor the voltage of the first output terminal of the converter and to control the on and off operation of the switching element. The converter additionally has an auxiliary inductor, connected between the centre point and a terminal on the switching element, in order to limit the reverse current in the main diode when the switching element changes to conducting condition, and a series connection of a zener diode and a first and second diode between the terminal and the output terminal to transfer energy stored in the auxiliary inductor towards the output terminal. Furthermore, a capacitor for temporary storage of energy from the inductor is connected between the centre point and the connecting point between the first and second diodes.
REFERENCES:
patent: 4591966 (1986-05-01), Smith
patent: 5059887 (1991-10-01), Iida et al.
patent: 5067066 (1991-11-01), Chida
patent: 5164656 (1992-11-01), Gulczynski
patent: 5247239 (1993-09-01), Yamamura et al.
patent: 5262930 (1993-11-01), Hua et al.
Berhane Adolf
Telefonaktiebolaget LM Ericsson
Wong Peter S.
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