PATENT CLAIM ANALYSIS

Application Number: 15744923
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["318", "700000"]

Abstract:
A synchronous motor control device includes: a DC power supply; an inverter main circuit; a three-phase synchronous motor; and an inverter control unit that outputs a PWM signal used to control the inverter main circuit. The inverter control unit includes: a PWM signal generation unit; a start-up control unit that outputs a start-up voltage command value to the PWM signal generation unit at the time of start-up; a steady state control unit that calculates a steady state voltage command value in a steady state and outputs the value to the PWM signal generation unit; and a steady state control parameter initial value calculation unit that outputs an initial value of a control parameter to the steady state control unit such that an output voltage vector from the inverter main circuit to the three-phase synchronous motor is consistent before and after switching from the start-up to the steady state.

Claim (Index 4):
A method of controlling a synchronous motor that is driven by an output voltage vector from an inverter main circuit after DC power of a DC power supply is converted into AC power, the method comprising:\n calculating and outputting a start-up voltage command value on the basis of a phase current of the synchronous motor and a DC voltage of the DC power supply; calculating and outputting a steady state voltage command value by using a voltage equation; and calculating an initial value of a steady state control parameter such that the output voltage vector from the inverter main circuit to the synchronous motor according to the start-up voltage command value corresponds with the output voltage vector from the inverter main circuit to the synchronous motor according to the steady state voltage command value when a voltage command value in converting the DC power of the DC power supply into the AC power is switched from the start-up voltage command value to the steady state voltage command value.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 86.0
- Lexical Diversity: 3.03846
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15574504', '11993278', '13596550', '12407289', '12525580']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6753886995028866
- 35 USC 102 Novelty (BERT): 0.5027682530295414
- Combined Prediction Score: 0.6581266548555521
- Mean Citation Score: 236.246794
- Max Citation Score: 284.57346
- Similarity Product: 222.30802130540368

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

Dataset: test