PATENT CLAIM ANALYSIS

Application Number: 16308795
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["363", "089000"]

Abstract:
It is an object of the present invention to provide a power factor correction device for three-phase AC-DC conversion which enables effective power factor correction and stable power conversion with a simple construction and control system. There is provided a power factor correction device comprising: first, second and third input terminals to which three-phase AC is inputted; a positive electrode terminal p and a negative electrode terminal n each connected to a load device; first, second and third transformers Tr, Ts, Tt each having a primary coil with an end connected to said first, second and third input terminals; one or more switching elements having ends D applied with the voltage of another end of said primary coil, other ends S connected to a common potential terminal on the side of said primary coil and control ends G; first, second and third rectifying devices D 1,  D 2,  D 3  having ends applied with the voltage of another end of said secondary coil so as to pass the current flow into said positive electrode terminal p; a smoothing condenser C disposed between said positive electrode terminal p and said negative electrode terminal n; wherein the control ends of said switching elements are controlledby a single control signal having a constant duty ratio.

Claim (Index 17):
The power factor correction device of  claim 1 , wherein one of the one or more switching elements comprises a first sub-switching element and a second sub-switching element,\n the first sub-switching element having a control end having an end connected to the common potential terminal and on-off controlled so as to pass or interrupt the current flowing into the primary coils, and the second sub-switching element being disposed between the first sub-switching element and the primary coil in serial alignment with the first sub-switching element and having a control end, and wherein the power factor correction device further comprises a Zener diode (ZD) disposed between the connecting point of the first and second sub-switching elements and the control terminal of the second sub-switching element, and a resistance element disposed between one of the input terminals and the control terminal of the second sub-switching element, the Zener diode being disposed so as to apply reverse bias to the voltage between the one of the input terminals and the common potential terminal on the side of the primary coils.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 98.0
- Lexical Diversity: 2.23301
- Patent Class: 363.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10541521', '13438398', '10547775', '15177543', '12551584']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8115896002059018
- 35 USC 102 Novelty (BERT): 0.4860465271082189
- Combined Prediction Score: 0.7790352928961335
- Mean Citation Score: 225.51044
- Max Citation Score: 232.85144
- Similarity Product: 181.9270401893711

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