Method for operating a voltage converter, and a voltage converter and its application
First Claim
1. Method for operating a DC/DC converter for switching mode, in particular during a starting operation, having the following steps:
- subdividing into a plurality of subphases a time phase during which the output voltage of the voltage converter increases as a consequence of at least one parameter selected from the group consisting of an inherent inductance of the voltage converter and an inductance connected to the voltage converter,the starting and stopping times are respectively selected to be constant within each subphase in which the electronic switch or switches of the DC/DC voltage converter are repeatedly switched on and off,dimensioning the switching-on times of the voltage converter from subphase with different values as a function of the effective inductance, specifically in such a way that the mean value of the energy-consuming current of the voltage converter in the subphases does not exceed a prescribed value.
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Abstract
In a voltage converter for switching mode, for example a push-pull voltage converter (GW), during a starting operation the switching-on pulses for the switching elements (S1, S2) are dimensioned to be of different length, specifically in such a way that the mean value of the energy-consuming current does not exceed a prescribed limiting value.
By contrast with conventional methods, there is no regulation of the switching-on pulses, but the different switching-on times in a plurality of subphases are prescribed in a fixed fashion as a function of the inductance (LS) of the DC/DC voltage converter (GW).
The method according to the invention ensures that the mean value of the inrush current cannot become substantially higher than a prescribed nominal value. This is advantageous, in particular, for the power supply of travelling wave amplifiers. FIG. 1
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7 Claims
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1. Method for operating a DC/DC converter for switching mode, in particular during a starting operation, having the following steps:
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subdividing into a plurality of subphases a time phase during which the output voltage of the voltage converter increases as a consequence of at least one parameter selected from the group consisting of an inherent inductance of the voltage converter and an inductance connected to the voltage converter, the starting and stopping times are respectively selected to be constant within each subphase in which the electronic switch or switches of the DC/DC voltage converter are repeatedly switched on and off, dimensioning the switching-on times of the voltage converter from subphase with different values as a function of the effective inductance, specifically in such a way that the mean value of the energy-consuming current of the voltage converter in the subphases does not exceed a prescribed value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification