PATENT CLAIM ANALYSIS

Application Number: 15948396
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["363", "052000"]

Abstract:
A power conversion topology and control method intended for use with a DC bus is disclosed, providing a means to prevent the flow of ground fault current while detecting a fault condition and optionally continuing to operate the DC bus. In one control configuration, a DC-DC power stage with an active current control loop drives differential current to zero, and a separate voltage control loop maintains the desired differential bus voltage. Absolute bus voltage with respect to ground is monitored in order to detect fault conditions. In another configuration, the absolute voltage of the bus with respect to ground is controlled and differential bus current is monitored to detect ground fault conditions.

Claim (Index 12):
A circuit comprising:\n an AC stage having a plurality of half bridges driven independently by pulse-width-modulated signals to couple to an AC source of power; a DC-DC stage having a plurality of half bridges driven independently by pulse-width-modulated signals, the AC and DC-DC stages coupled via an internal DC link capacitor coupled between internal DC rails; a DC output stage having a positive rail and a negative rail coupled to ground via high-impedance grounding resistors, the rails coupled to respective half bridges of the DC-DC stage to receive positive and negative DC voltages respectively; and\n a differential sensor coupled to the DC output stage positive and negative rails to measure a difference in current, wherein an absolute voltage of the DC bus is controlled with respect to ground.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 2.0339
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15222380', '15193181', '14603843', '13481404', '15766132']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8008895121841239
- 35 USC 102 Novelty (BERT): 0.4784767070045667
- Combined Prediction Score: 0.7686482316661681
- Mean Citation Score: 187.699662
- Max Citation Score: 260.3961
- Similarity Product: 248.67543084465265

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

Dataset: test