Methods, circuits and articles of manufacture for configuring DC output filter circuits
First Claim
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1. A method of operating an AC to DC converter circuit, the method comprising:
- changing a configuration of a DC output filter circuit by switching an inductive circuit element from being in series with a capacitive circuit element to being bypassed and to maintain the capacitive circuit element across an output of the DC output filter circuit, to reshape a current waveform in a rectifier circuit, included in the AC to DC converter circuit, based on an operating efficiency of the AC to DC converter circuit;
wherein changing a configuration of a DC output filter circuit comprises;
configuring the DC output filter circuit so that the current waveform includes a peak current over a time interval; and
changing the configuration of the DC output filter circuit to reduce the peak current and to extend the current waveform to a time beyond the time interval;
wherein configuring the DC output filter circuit comprises configuring the DC output filter circuit to include the capacitive circuit element, wherein changing the configuration of the DC output filter circuit comprises switching the inductive circuit element into series with the capacitive circuit element.
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Abstract
A method of operating an AC to DC converter circuit can be provided by changing a configuration of a DC output filter circuit to reshape a current waveform in a rectifier circuit, included in the AC to DC converter circuit, based on an operating efficiency of the AC to DC converter circuit. Related circuits and articles of manufacture are also disclosed.
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Citations
18 Claims
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1. A method of operating an AC to DC converter circuit, the method comprising:
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changing a configuration of a DC output filter circuit by switching an inductive circuit element from being in series with a capacitive circuit element to being bypassed and to maintain the capacitive circuit element across an output of the DC output filter circuit, to reshape a current waveform in a rectifier circuit, included in the AC to DC converter circuit, based on an operating efficiency of the AC to DC converter circuit; wherein changing a configuration of a DC output filter circuit comprises; configuring the DC output filter circuit so that the current waveform includes a peak current over a time interval; and changing the configuration of the DC output filter circuit to reduce the peak current and to extend the current waveform to a time beyond the time interval; wherein configuring the DC output filter circuit comprises configuring the DC output filter circuit to include the capacitive circuit element, wherein changing the configuration of the DC output filter circuit comprises switching the inductive circuit element into series with the capacitive circuit element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An AC to DC converter circuit, comprising:
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an AC to DC rectifier circuit configured to provide a current waveform; and a configurable DC output filter circuit, coupled to the AC to DC rectifier circuit, configured to reshape the current waveform based on an operating efficiency of the AC to DC converter circuit, wherein the configurable DC output filter circuit further comprises; a capacitive circuit element configured to coupling across a load of the AC to DC converter circuit; an inductive circuit element coupled in series with the capacitive circuit element; and a bypass switch, coupled in parallel with the inductive circuit element. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An article of manufacture for operating an AC to DC converter circuit, comprising:
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a non-transitory computer readable storage medium having computer readable program code embodied therein, the computer readable program code comprising; computer readable program code configured to change a configuration of a DC output filter circuit by switching an inductive circuit element from being in series with a capacitive circuit element to being bypassed and to maintain the capacitive circuit element across an output of the DC output filter circuit, to reshape a current waveform in an AC to DC rectifier circuit, included in the AC to DC converter circuit, based on an operating efficiency of the AC to DC converter circuit; wherein the computer readable program code configured to change a configuration of a DC output filter circuit comprises; computer redable program code configured to configure the DC output filter circuit so that the current waveform includes a peak current over a time interval; and computer readable program code configured to change the configuration of the DC output filter circuit to reduce the peak current and to extend the current waveform to a time beyond the time interval; wherein the computer readable program code configured to configure the DC output filter circuit comprises computer readable program code configured to configure the DC output filter circuit to include a capacitive circuit element, and the computer readable program code configured to change the configuration of the DC output filter circuit comprises computer redable program code configured to switch the inductive circuit element into series with the capacitive circuit element.
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Specification