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4. Direct scalar drive without speed sensor
In many industrial applications, speed sensors are no longer required, as they have a number of disadvantages in terms of cost, reliability and size. Figure 7 shows an example of a direct-control drive without a speed sensor.
The amplitude of the stator voltage is defined as before by the flux controller. In the flux estimator [relations (10) to (11)...
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Direct scalar drive without speed sensor
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