PATENT CLAIM ANALYSIS

Application Number: 15908860
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["318", "806000"]

Abstract:
A motor drive apparatus includes: a converter which converts AC power to DC power and to output the DC power to a DC link; an inverter including power devices which converts the DC power to AC power for driving a motor; a capacitor provided in the DC link; a shut-off circuit to open and close an electrical path between the AC power source and the converter; a constant current control unit which performs control in such a manner as to allow a constant current supplied by the capacitor to pass through a detection target power device among the power devices in the inverter; and an abnormality detection unit which detects an abnormality in the detection target power device based on changes in voltage between a collector and an emitter of the detection target power device during a period in which the constant current passes through the detection target power device.

Claim (Index 3):
The motor drive apparatus according to  claim 2 , wherein the gate voltage adjustment unit regularly switches between one and another of the power devices, gate voltages of which are adjusted by the voltage adjustment unit, each of the power devices provided for a different phase and a different arm from the phase and the arm for which the detection target power device is provided.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 2.37879
- Patent Class: 318.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10115105', '13885934', '13612975', '14637478', '11148345']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6507281382849168
- 35 USC 102 Novelty (BERT): 0.5076367001370666
- Combined Prediction Score: 0.6364189944701318
- Mean Citation Score: 213.18053
- Max Citation Score: 235.2979
- Similarity Product: 157.81454316129685

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