Estimation of resistance in electrical machines
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United States of America Patent
Stats
-
Feb 21, 2017
Grant Date -
Jun 12, 2014
app pub date -
Dec 3, 2013
filing date -
Dec 11, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In an electrical machine which has unidirectional excitation applied to its windings, the mean values of voltage and current can be computed from the instantaneous phase voltage and current by the use of, for example, low-pass filters (in either the analogue or digital domain). The value of winding resistance can then be calculated by dividing the mean voltage by the mean current. This avoids the cost, fragility and potential inaccuracy of conventional temperature sensors, and provides the controller with an ongoing estimate of winding temperature.
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International Classification(s)
- 2013 Application Filing Year
- G01K Class
- 580 Applications Filed
- 511 Patents Issued To-Date
- 88.11 % Issued To-Date
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- 0 Citation Count
- G01K Class
- 0 % this patent is cited more than
- 8 Age
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 21, 2028 |
