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For sensorless position detection of permanent magnet synchronous machines at very low speed and standstill, signal injection methods are commonly used. As a prerequisite these so called saliency-tracking methods require a differential magnetic anisotropy of the machine, which is both position and load dependent and thus varying during operation. So the performance of sensorless operation strongly...
For sensorless position detection of permanent magnet synchronous machines at very low speed and standstill, signal injection methods are commonly used. As a prerequisite these so called saliency-tracking methods require a differential magnetic anisotropy of the machine, which is both position and load dependent and thus varying during operation. So the performance of sensorless operation strongly...
It is well known that rotor position detection at very low speed and at standstill is only possible with signal injection methods, because at vanishing speed the different methods using the induced voltage (back EMF methods) are not suitable. All signal injection methods need as a prerequisite the existence of a magnetic anisotropy of the machine over a wide range of operating conditions. This document...
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