PATENT CLAIM ANALYSIS

Application Number: 15904534
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-07
Patent Classification: ["318", "400020"]

Abstract:
A drive system of an embodiment includes an inverter for driving an electric motor; a detector that detects an electric current value output from the inverter; command generators that generate an electric current command value corresponding to an electric current to be supplied to the electric motor and a gate command of the inverter so that the electric current command value matches the electric current value; calculators that calculate an voltage target vector of the inverter and a rotation phase estimation value of the electric motor based on the electric current value and the voltage target vector, in an initial estimation of when activating the inverter. The electric current command value in the initial estimation is a value to supply an electric current for magnetically saturating a rotor of the electric motor, and a dynamic inductance of the electric motor used for calculating the rotation phase estimation value is a value of when the rotor of the electric motor is magnetically saturated.

Claim (Index 1):
A drive system comprising:\n an electric motor; an inverter main circuit that outputs an alternating electric current for driving the electric motor; an electric current detector that detects an electric current value of the alternating electric current output from the inverter main circuit; an electric current command generator that generates an electric current command value corresponding to an electric current to be supplied to the electric motor; a gate command generator that generates a gate command of the inverter main circuit so that the electric current command value matches the electric current value detected by the electric current detector; an output voltage target vector calculator that calculates an output. voltage target vector of the inverter main circuit based on the gate command; and a rotation phase estimator that calculates a rotation phase estimation value of the electric motor based on the electric current value detected by the electric current detector and the output voltage target vector of the inverter main circuit, in an initial estimation of when activating the inverter main circuit, wherein the electric current command value in the initial estimation is a value to supply an electric current for magnetically saturating a rotor of the electric motor, and in the rotation phase estimator, a dynamic inductance of the electric motor used for calculating the rotation phase estimation value is a value of when the rotor of the electric motor is magnetically saturated.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 88.0
- Lexical Diversity: 2.81667
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14374261', '16311856', '15766759', '13198607', '14174102']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.633518649805806
- 35 USC 102 Novelty (BERT): 0.4901806785733089
- Combined Prediction Score: 0.6191848526825563
- Mean Citation Score: 228.46781
- Max Citation Score: 235.0813
- Similarity Product: 190.5546277882874

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