Impedance detector apparatus and method
First Claim
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1. A method for automatically determining an impedance of an electrical component, the method comprising:
- obtaining quadrature voltage values and quadrature current values associated with the electrical component at a frequency of interest;
using at least one processor, computing at least one impedance value of the electrical component at a frequency of interest based on the quadrature voltage and current values during real-time operation of a host system that includes the electrical component; and
using the at least one processor, selectively initiating a remedial action, or modifying or discontinuing operation of the host system if the computed impedance value of the electrical component exceeds a threshold value;
wherein obtaining the quadrature voltage values and quadrature current values comprises;
generating the quadrature voltage values according to at least one detected voltage signal or value associated with the electrical component and according to a signal or value representing the frequency of interest using a first quadrature tracking filter, andgenerating the quadrature current values according to at least one detected current signal or value associated with the electrical component and according to the signal or value representing the frequency of interest using a second quadrature tracking filter.
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Abstract
Impedance detection methods and systems are presented for automatic computation of an electrical component impedance value at one or more specific frequencies of interest using quadrature voltage and current values generated by quadrature tracking filters based on sensed or measured voltage and current signals or values and a base frequency input.
77 Citations
18 Claims
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1. A method for automatically determining an impedance of an electrical component, the method comprising:
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obtaining quadrature voltage values and quadrature current values associated with the electrical component at a frequency of interest; using at least one processor, computing at least one impedance value of the electrical component at a frequency of interest based on the quadrature voltage and current values during real-time operation of a host system that includes the electrical component; and using the at least one processor, selectively initiating a remedial action, or modifying or discontinuing operation of the host system if the computed impedance value of the electrical component exceeds a threshold value; wherein obtaining the quadrature voltage values and quadrature current values comprises; generating the quadrature voltage values according to at least one detected voltage signal or value associated with the electrical component and according to a signal or value representing the frequency of interest using a first quadrature tracking filter, and generating the quadrature current values according to at least one detected current signal or value associated with the electrical component and according to the signal or value representing the frequency of interest using a second quadrature tracking filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An impedance detection system, comprising:
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an electronic memory; at least one sensor; at least one processor operatively coupled with the electronic memory and programmed to compute at least one impedance value of an electrical component at a frequency of interest based on quadrature voltage values and quadrature current values associated with the electrical component at the frequency of interest during real-time operation of a host system that includes the electrical component, the at least one processor being programmed to selectively initiate a remedial action or modify or discontinue operation of the host system if the computed impedance value of the electrical component exceeds a threshold value; a first quadrature tracking filter operative to generate the quadrature voltage values according to at least one detected voltage signal or value associated with the electrical component and according to a signal or value representing the frequency of interest; and a second quadrature tracking filter operative to generate the quadrature current values according to at least one detected current signal or value associated with the electrical component and according to the signal or value representing the frequency of interest. - View Dependent Claims (12, 13, 14, 15)
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16. A non-transitory computer readable medium with computer executable instructions for:
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obtaining the quadrature voltage values and quadrature current values by; generating the quadrature voltage values according to at least one detected voltage signal or value associated with an electrical component and according to a signal or value representing a frequency of interest using a first quadrature tracking filter, and generating the quadrature current values according to at least one detected current signal or value associated with the electrical component and according to the signal or value representing the frequency of interest using a second quadrature tracking filter; receiving the quadrature voltage values and quadrature current values associated with the electrical component at the frequency of interest; computing at least one impedance value of the electrical component at the frequency of interest based on the quadrature voltage and current values during real-time operation of a host system that includes the electrical component; and selectively initiating a remedial action, or modifying or discontinuing operation of the host system if the computed impedance value of the electrical component exceeds a threshold value. - View Dependent Claims (17, 18)
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Specification