System and method for electronic device control in the presence of electrical arcing
AssigneeKoninklijke Philips N.V.
InventorsARINDAM CHAKRABORTY, ARUN GANESH, ZHIHUA SONG, PAUL ROBERT VELDMAN, GUANGYI LUO
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Abstract
This invention discloses a method and apparatus managing a voltage applied to a load. The method comprises determining generation of an electrical arc, the electrical arc being determined based on detecting a high frequency signal; isolating and filtering the high frequency arc signal; generating a signal having a frequency proportional to the frequency of the arc signal; and altering a frequency of the voltage applied to the load in response to the frequency of the signal.
Claims15
A circuit for managing a voltage applied to a load in view of detection of an electrical arc, said circuit comprising:
- a detection circuit:
- receiving a signal from said load;
- detecting said electrical arc within said signal, and
- generating an arc detect signal in response to a frequency said detected electrical arc;
- a processing circuit:
- receiving said arc detect signal generated in response to said detected electrical arc;
- generating a second signal proportional to said arc detect signal;
- an output circuit:
- receiving said second signal;
- and
- altering a frequency of the voltage applied to said load in response to said second signal, wherein a corresponding current applied to said load is decreased;
- inhibiting generation of said proportional signal;
- and
- wherein said altered frequency is an increase in frequency.
A method for managing a voltage applied to a load comprising:
- determining a generation of an electrical arc, said electrical arc being determined based on detecting a high frequency signal;
- isolating and filtering said high frequency signal;
- generating a signal having a frequency proportional to said filtered high frequency signal;
- altering a frequency of said voltage in response to said signal, wherein alteration of said frequency of said voltage is a function of the frequency of the signal;
- inhibiting generation of said proportional signal;
- and
- wherein said altered frequency is an increase in frequency.
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A protection circuit comprising:
- a first converter converting a received input AC signal to a DC signal;
- a second converter converting said DC signal to an AC output signal at a desired frequency;
- a feedback circuit providing a signal to said second converter, said signal having a frequency proportional to a frequency of a detected arc signal, wherein said signal when applied to said second converter causes a frequency of the voltage associated with said AC output signal to be increased;
- a stop-gap/blanking circuit inhibiting generation of said proportional signal;
- and
- an arc detection circuit generating said arc detect signal in response to detection of a high frequency signal on said AC output signal.
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Dependencies are inferred from the claim text.