Detection Method of Transient Symmetrical Component Transformation of Generalized Harmonics in Polyphase Circuits
A technology of instantaneous symmetry and component transformation, applied in the field of power system, can solve problems such as limited scope of application, difficulty in hardware implementation, and low accuracy
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[0047] Combining the principle frame of the multi-phase circuit generalized harmonic current detection method based on instantaneous symmetrical component transformation transformation figure 1 , Algorithm software process box figure 2 and the schematic block of the detection circuit hardware image 3 , describe the specific embodiment and working process of the present invention.
[0048] see figure 1 , figure 2 and image 3 , the whole working process of multi-phase circuit generalized harmonic current detection is: signal conditioning unit 1 and signal conditioning unit 2 receive the phase voltages and phase currents from the multi-phase power system, and filter out the AC components higher than the highest frequency that needs to be detected The signal sampling unit 1 and the signal sampling unit 2 perform analog-to-digital conversion on the adjusted phase voltages and phase currents according to the preset sampling frequency to obtain the digital streams of the phas...
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