Control circuit for a DC-to-DC switching converter, and the use thereof for maximizing the power delivered by a photovoltaic generator
First Claim
1. A control circuit for a switching DC/DC Converter comprising:
- an input for an indicator signal indicative of an output current level from said converter;
a peak detector for detecting and storing a maximum value of said indicator signal;
a comparator element for comparing an instantaneous value of said indicator signal with said stored maximum value, and for generating a switching signal when said instantaneous value becomes less than a predetermined fraction of said stored value;
reinitializer means for reinitializing said peak detector in response to said switching signal; and
means for generating a control signal that switches between a state in which it increases over time and a state in which it decreases over time in response to said switching signal.
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Accused Products
Abstract
A control circuit for a switching DC/DC Converter comprising: an input for an indicator signal indicative of an output current level from said converter; a peak detector for detecting and storing a maximum value of said indicator signal; a comparator element for comparing an instantaneous value of said indicator signal with said stored maximum value, and for generating a switching signal when said instantaneous value becomes less than a predetermined fraction of said stored value; reinitializer means for reinitializing said peak detector in response to said switching signal; and means for generating a control signal that switches between a state in which it increases over time and a state in which it decreases over time in response to said switching signal. A control module for photovoltaic generator, the module including such a control circuit, and a photovoltaic generator system comprising a plurality of such modules, each controlling a respective photovoltaic generator.
16 Citations
12 Claims
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1. A control circuit for a switching DC/DC Converter comprising:
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an input for an indicator signal indicative of an output current level from said converter; a peak detector for detecting and storing a maximum value of said indicator signal; a comparator element for comparing an instantaneous value of said indicator signal with said stored maximum value, and for generating a switching signal when said instantaneous value becomes less than a predetermined fraction of said stored value; reinitializer means for reinitializing said peak detector in response to said switching signal; and means for generating a control signal that switches between a state in which it increases over time and a state in which it decreases over time in response to said switching signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of controlling a switching DC/DC Converter in such a manner that its output current oscillates about its maximum value, the method comprising the following operations:
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generating a control signal for controlling said DC/DC Converter, which control signal can present a state in which it increases over time or a state in which it decreases over time; continuously acquiring an indicator signal indicative of an output current level from said DC/DC Converter; continuously detecting a peak value of said indicator signal and storing it in a storage element; continuously comparing the present value of said indicator signal with said stored peak value; and when said present value is less than a first predetermined fraction of said stored peak value; reinitializing said storage element; and switching said control signal between said state of increasing relative to time and said state of decreasing relative to time.
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Specification