Calculation of MOSFET switch temperature in motor control
US9608558B1 · kind B1 · utility
1Cited by
1References
17Claims
0Family size
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Key dates
| Filing date | Sep 14, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Sep 16, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K2217/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and techniques are described for monitoring the operating temperature of one or more circuit elements, such as a metal oxide field effect transistor (MOSFET) switch, where the circuit element is used to control at least one phase of an electric motor. The systems and techniques may calculate temperature by determining at least two electrical signals from the circuit element taken at least two different times. This results in an accurate temperature calculation without requiring precise knowledge of the particular characteristics of each respective circuit element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.