PATENT CLAIM ANALYSIS

Application Number: 15863955
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["363", "056030"]

Abstract:
A fault inrush transient current restraining type virtual synchronous inverter and thereof is disclosed. The invention solves the problem that a virtual synchronous inverter will be burned due to inrush transient current in an extreme situation of a symmetrical fault occurring on the grid side by setting an information collection module for inverter output voltages and currents, a virtual synchronous inverting control module, a fault detection and synthesize module, a hysteresis comparison control module and a post fault clearing switch back grid-tie control module.

Claim (Index 7):
A control method of a fault inrush transient current restraining type virtual synchronous inverter, as recited in  claim 1 , wherein while normal operating, passing an output current of a virtual synchronous inverter through a information collection module for inverter output voltages and currents before being sent to a fault detection and synthesize module; determining the output current not to exceed a pre-set over-current protection value; wherein a switch back grid-tie control module and a hysteresis comparison control module is inactive; a virtual synchronous inverting control module runs normally;\n when a short-circuit fault occurs, passing the output current of the virtual synchronous inverter through the information collection module for the inverter output voltages and currents before being sent to a fault detection and synthesize module; determining the output current to exceed a pre-set over-current protection value; sending out a switch start signal to the virtual synchronous inverting control module by the fault detection and synthesize module; switching the virtual synchronous inverting module to a switch back grid-tie control module; switching a drive control signal of the inverter from an output of the virtual synchronous inverting control module to an output of a hysteresis comparison control module; after the short-circuit fault is cleared, passing a PCC voltage of the virtual synchronous inverter through the information collection module for the inverter output voltages and currents; sending a PCC voltage to the fault detection and synthesize module; determining a peak value to recover; sending out a switch back start signal by the fault detection and synthesize module to the switch back grid-tie control module; switching a switch back grid-tie control module to the virtual synchronous inverting control module; switching the drive control signal of the inverter from the hysteresis comparison control module to the virtual synchronous inverting control module; realizing a non-inrush switch back and completing the whole process of restraining an inrush current.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 86.0
- Lexical Diversity: 1.53448
- Patent Class: 363.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14749339', '14797039', '14075474', '13128540', '13103070']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.823308989940325
- 35 USC 102 Novelty (BERT): 0.4776918121871823
- Combined Prediction Score: 0.7887472721650107
- Mean Citation Score: 180.822204
- Max Citation Score: 189.34532
- Similarity Product: 139.93342996008872

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

Dataset: test