A D.C. permanent magnet motor powered fan can serve as a cooling package air flow meter. This allows for continuous air flow monitoring during vehicle operation with applications to more precise air flow control schemes. In the freewheel mode, the air flow is a linear function of the open circuit voltage of the motor. In the powered mode, the motor voltage and current can be used with a motor and fan model to predict fan air flow. The model is explained and verifying test results are presented. Comparison of the accuracy and complexity vs. that of arrays of precision anemometers is provided.
The Electric Fan as a Cooling Package Air Flow Meter
Sae International Journal of Passenger Cars- Electronic and Electrical Systems
Sae Int. J. Passeng. Cars - Electron. Electr. Syst
SAE 2012 World Congress & Exhibition ; 2012
2012-04-16
7 pages
Conference paper
English
The Electric Fan as a Cooling Package Air Flow Meter
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