PATENT CLAIM ANALYSIS

Application Number: 16078871
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["315", "20000R"]

Abstract:
An AC/DC PFC converter comprises an LLC PFC pre-regulator and a DC/DC converter output stage. The output stage has a feedback unit adapted to provide a feedback signal (in addition to the conventional feedback of the bus voltage error) to the control circuit of the PFC pre-regulator for modulating the controlled output voltage of the PFC pre-regulator in dependence on the output power and/or the input current and voltage. In this way, the total harmonic distortion of the input of the converter can be reduced by controlling the gate switching in the PFC pre-regulator.

Claim (Index 13):
An AC/DC PFC conversion method, comprising:\n operating a PFC pre-regulator by:\n rectifying a mains voltage; \n controlling a half bridge inverter comprising a high side switch and a low side switch by generating a gate drive signal and providing an output from a node between the switches to an LLC circuit thereby to generate a controlled output voltage, wherein a high gate drive signal turns on one switch and turns off the other and a low gate drive signal turns off the one switch and turns on the other switch; and \n providing an output from the LLC circuit to an output stage; and \n operating the output stage by:\n implementing DC/DC conversion; and \n providing a feedback signal from the output stage to the PFC pre-regulator for modulating the controlled output voltage of the PFC pre-regulator in dependence on at least the output power of the output stage, wherein a set-point for the controlled output voltage is varied synchronously with the mains voltage, such that an imposed bus voltage variation is synchronous with the rectified input mains voltage.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 96.0
- Lexical Diversity: 1.75439
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16075882', '16073862', '16073361', '16075778', '16087014']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7441667701197017
- 35 USC 102 Novelty (BERT): 0.5759865160836752
- Combined Prediction Score: 0.727348744716099
- Mean Citation Score: 422.397734
- Max Citation Score: 454.17776
- Similarity Product: 420.8331982978439

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