PATENT CLAIM ANALYSIS

Application Number: 15913387
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["363", "041000"]

Abstract:
Control systems for a multi-level diode-clamped inverter and corresponding methods include a processor and a digital logic circuit forming a hybrid controller. The processor identifies sector and region locations based on a sampled reference voltage vector V* and angle θ e *. The processor then selects predefined switching sequences and pre-calculated turn-on time values based on the identified sector and region locations. The digital logic circuit generates PWM switching signals for driving power transistors of a multi-level diode-clamped inverter based on the turn-on time values and the selected switching sequences. The control system takes care of the existing capacitor voltage balancing issues of multi-level diode-clamped inverters while supplying both active and reactive power to an IT load. Using the control system, one can generate a symmetrical PWM signal that fully covers the linear under-modulation region.

Claim (Index 17):
An energy storage system comprising:\n an energy storage device; a DC-DC converter coupled to the energy storage device; a multi-level inverter coupled to the DC-DC converter; and a controller for the multi-level inverter, the controller comprising:\n a processor and a memory configured to:\n sample a reference voltage vector and an angle; \n identify a sector among a plurality of sectors of the multi-level inverter and a region among a plurality of regions of the multi-level inverter based on the sampled reference voltage vector and the sampled angle; and \n select a switching sequence and a plurality of turn-on time values based on the identified sector and region location; and \n \n a circuit configured to generate pulse width modulation (PWM) switching signals for the plurality of regions of the multi-level inverter and the plurality of sectors of the multi-level inverter based on the turn-on time values and the selected switching sequence.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 90.0
- Lexical Diversity: 1.70238
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15493978', '15694135', '13547562', '12394613', '15315128']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8196062051478681
- 35 USC 102 Novelty (BERT): 0.5306640652626486
- Combined Prediction Score: 0.7907119911593461
- Mean Citation Score: 252.825876
- Max Citation Score: 398.51974
- Similarity Product: 341.7148400314473

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