发明名称 |
Complex wavelet filter based power measurement and calibration system |
摘要 |
A power measurement and calibration system provides power and line frequency measurements by using a bandpass filter having complex voltage and current outputs from which real and imaginary power components can be determined. Calibration of the filter may be omitted if a complex wavelet filter is used to implement the bandpass filter and a determination of line frequency can also be provided for downstream use. A processor receiving data from the output of the filter can compute real and imaginary power, power factor and the line frequency. The filter may be implemented by a processor executing program instructions, or a digital circuit implementing the filter and optionally a CORDIC rotator for computing the current-to-voltage phase relationship can provide input to the processor for power measurement and calibration of the sample rate to line frequency relationship and for other uses. |
申请公布号 |
US8165835(B1) |
申请公布日期 |
2012.04.24 |
申请号 |
US20080259112 |
申请日期 |
2008.10.27 |
申请人 |
SINGH RAHUL;BRUMMEL DALE;LIU HANG;GORSEGNER ROBERT LEON;DE ANGEL EDWIN;PINA JEAN CHARLES;CIRRUS LOGIC, INC. |
发明人 |
SINGH RAHUL;BRUMMEL DALE;LIU HANG;GORSEGNER ROBERT LEON;DE ANGEL EDWIN;PINA JEAN CHARLES |
分类号 |
G01R19/00;G06F17/40 |
主分类号 |
G01R19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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