PATENT CLAIM ANALYSIS

Application Number: 15943164
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["363", "053000"]

Abstract:
A converter apparatus includes: a converter for converting an AC voltage into a DC voltage; a DC link capacitor connected to the converter; a voltage detector for DC link voltage; a charging circuit for the DC link capacitor; a charging circuit controller for a switch connected with a charging resistor; a current detector for detecting a current of the converter; a turn-on controller for controlling the turning-on of power devices; a switch for connecting or disconnecting a power supply; a power supply monitor for monitoring a connection state of the power supply; a threshold value setter for setting a first or second threshold value; and a failure detector for determining the presence or absence of the failure of the power devices by a comparison between a current flowing upon turning on the power device, immediately after disconnection of the power supply, and the first or second threshold value.

Claim (Index 6):
A method for detecting a failure of a power device of a converter apparatus including:\n a converter including a plurality of power devices, configured to convert an AC voltage supplied from a power supply into a DC voltage, and output the DC voltage; a DC link capacitor connected to an output side of the converter; a current detector configured to detect a current flowing between the converter and the DC link capacitor; and a switch configured to connect or disconnect between the power supply and the converter, the method comprising: connecting the power supply to the converter by closing the switch; charging the DC link capacitor; controlling the switch so as to turn the switch into an open state, to disconnect the power supply from the converter; detecting a current flowing between the converter and the DC link capacitor, immediately after the power supply is disconnected from the converter; and determining the presence or absence of a failure of the power device, by a comparison between the detected current and a first threshold value or a second threshold value.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 2.45455
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15622797', '14731557', '13930561', '13360844', '13803805']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8125872478120413
- 35 USC 102 Novelty (BERT): 0.4746482845068564
- Combined Prediction Score: 0.7787933514815228
- Mean Citation Score: 211.070246
- Max Citation Score: 216.45755
- Similarity Product: 175.4816840748608

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

Dataset: test