PATENT CLAIM ANALYSIS

Application Number: 15774284
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["702", "058000"]

Abstract:
A direct current (DC) fault arc detection method, including performing sampling, filtering and fast Fourier transform (FFT) on an input current of a high frequency power electronics converter, to obtain an amplitude-frequency characteristic curve of a current high frequency component; and selecting, from the amplitude-frequency characteristic curve, at least one frequency band including a switching frequency or a multiple frequency, calculating a peak value D 1  of amplitudes and an average value D 2  of the amplitudes within the frequency band, and determining, according to a change of a distance between the peak value D 1  and the average value D 2 , whether an arc occurs, where if the average value D 2  approaches the peak value D 1 , an arc occurs; otherwise, no arc occurs.

Claim (Index 4):
The DC fault arc detection method according to  claim 1 ,\n wherein in the step 2, a calculation method of the average value D 2  includes removing a first predetermined percentage of largest pieces of amplitudes from the amplitudes within the selected frequency band, removing a second predetermined percentage of smallest pieces of amplitudes from the amplitudes, and obtaining an average value of the remaining amplitudes, so that the average value D 2  is obtained.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 93.0
- Lexical Diversity: 2.10145
- Patent Class: 702.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14074235', '15397389', '14285903', '12637873', '11679281']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2041382322037246
- 35 USC 102 Novelty (BERT): 0.4780099575926569
- Combined Prediction Score: 0.2315254047426179
- Mean Citation Score: 154.013644
- Max Citation Score: 165.77219
- Similarity Product: 117.99822232237936

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test