PATENT CLAIM ANALYSIS

Application Number: 16316881
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-08
Patent Classification: ["363", "040000"]

Abstract:
In a case where a switching element of an inverter does not operate properly due to failure or the like, a three-phase short circuit cannot be made, and an induced voltage cannot be suppressed. An induced voltage suppression device is electrically connected to the three-phase wiring between the power converter and the motor, in parallel to the power converter. A rectification circuit is composed of a three-phase diode bridge circuit. A DC voltage source is composed of a capacitor. A voltage detection circuit detects a voltage of both ends of the DC voltage source. In a short circuit, when a transistor of the voltage detection circuit is turned on, transistors are turned on to perform three-phase short-circuit operation to suppress an induced voltage of the motor. Since the induced voltage suppression device secures a DC voltage by the induced voltage of the motor as a drive source in a self-excited manner, it is possible to suppress the induced voltage even when an abnormality occurs in the power converter.

Claim (Index 1):
An induced voltage suppression device that operates using an induced voltage of a motor as a drive source, the induced voltage suppression device comprising:\n a DC voltage source configured to generate a DC drive voltage based on the induced voltage; a voltage detection circuit configured to detect the induced voltage; and a short circuit configured to perform a three-phase short circuit of the motor by using the drive voltage in a case where it is detected by the voltage detection circuit that the induced voltage exceeds a threshold, wherein the induced voltage suppression device is electrically connected in parallel to an inverter circuit that drives the motor between the inverter circuit and the motor.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 99.0
- Lexical Diversity: 2.34615
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14969261', '13009007', '16073910', '14447105', '10997916']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7958738200431986
- 35 USC 102 Novelty (BERT): 0.455396956823442
- Combined Prediction Score: 0.761826133721223
- Mean Citation Score: 151.81643200000005
- Max Citation Score: 163.18425
- Similarity Product: 133.52522084413468

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

Dataset: test