PATENT CLAIM ANALYSIS

Application Number: 16154451
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-02
Patent Classification: ["318", "434000"]

Abstract:
A controller for driving a motor includes a multiphase driver, an analog-to-digital converter (ADC), impedance estimation circuitry, and fault detection circuitry. The multiphase driver is configured to generate drive signals for energizing each motor phase winding. The ADC is configured to digitize voltage and current from each motor phase winding. The impedance estimation circuitry is configured to determine a phasor value for the digitized voltages and for the digitized currents at a predetermined harmonic frequency, and to determine a sequence impedance value based on the phasor values. The fault detection circuitry is configured to identify a fault in the windings of the motor based on the sequence impedance value.

Claim (Index 3):
A system for detecting faults in a multiphase winding, the system comprising:\n a driver configured to generate signals to drive each of a plurality of windings of the multiphase winding, the driver comprising a pulse width modulator, and wherein the signals to drive each winding are pulse width modulated signals; an analog front end comprising low-pass filters configured to: receive voltage signals and current signals that drive the windings; and attenuate frequency components of the voltage signals and the current signals that are higher than a predetermined cut-off frequency; an analog to digital converter (ADC) configured to digitize filtered voltage and current signals output by the analog front end; and a processor configured to: determine phasor values at a predetermined frequency of the digitized voltage and current signals; wherein the predetermined frequency is an inverter harmonic frequency of the signal that drives the windings; determine a sequence impedance value based on the phasor values; and identify a fault in the windings based on the sequence impedance value.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 2.10526
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15631907', '12698221', '15978720', '11997253', '14042753']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6007505515983254
- 35 USC 102 Novelty (BERT): 0.5295425436839888
- Combined Prediction Score: 0.5936297508068917
- Mean Citation Score: 197.932708
- Max Citation Score: 348.21057
- Similarity Product: 318.56442372274165

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