The electromagnetic compatibility (EMC) investigation of electricequipment which includes energy conversion, power delivery, and powersystems is considered. It is noted that, in such studies, it is alwaysnecessary to measure the harmonic current (voltage) of the harmonicdisturbance source and the harmonic impedance of the system. However,the harmonic disturbance source and impedance in the power system changein a complex manner both in the time and the frequency domain; theactual harmonic features cannot be obtained by the conventional methodof random-sample measurement. Several examples are used to show that thequantitative results in this area can be obtained with continuoussampling and analysis methods
展开▼
