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The measurement equipment provides basis for relay protection and controls, so it is crucial to ensure the measuring precision. A digital and analog mixed test scheme based on a computerized model and signal generator has been designed in this paper, the test scheme uses the simulation software to produce kinds of test signals, then transfers them to analog signals meeting the requirement of the device...
Field-weakening control is also an important issue for multiphase motors when used in electric vehicles which require wide speed range. Since the multiphase motor is a multidimensional system, therefore field-weakening control must be operated on both the fundamental subspace and other harmonic subspaces simultaneously. In this paper, firstly the reference voltage vector limit of the five-phase permanent...
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