Processing device, electric-powered vehicle, processing method, and program

Inventors: Masahito Kamikawabata (Tokyo, JP); Rei Honma (Tokyo, JP)

Assignee: NIPPON STEEL CORPORATION

H02P6/10 B60L15/20 H02P2207/05

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Quick Facts

Patent No.: US 12706555
App. No.: 18/727,457
Granted: Aug 11, 2026
Kind: B2

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Abstract

A processing device ( 400 ) sets an amplitude (I 5 ) of a fifth harmonic to make an amplitude ratio (A 5 ) to be greater than 20% and 80% or less. Further, the processing device ( 400 ) sets a phase difference (φ 5 ) to make a phase of the fifth harmonic with respect to a fundamental wave to be a leading phase, and to make the phase difference (φ 5 ) to be 80° or more and 106° or less.

Claims (63)

1 . A processing device for performing processing for generating an excitation waveform being a time waveform of an excitation signal that is supplied to a stator coil of a motor, the processing device comprising:

a computer processor including processing circuitry that:

sets waveform information including fundamental wave information and harmonic information,

wherein the fundamental wave information is information for generating a fundamental wave to be included in the excitation waveform,

wherein the harmonic information is information for generating a fifth harmonic to be superimposed on the fundamental wave,

wherein the computer processor sets the harmonic information,

wherein the harmonic information includes an amplitude ratio A 5 and a phase difference φ 5 ,

wherein the amplitude ratio A 5 expresses, on percentage, a ratio of an amplitude I 5 of the fifth harmonic to an amplitude I 0 of the fundamental wave,

wherein the phase difference φ 5 is a phase difference between the fundamental wave and the fifth harmonic,

wherein the computer processor sets the amplitude I 5 of the fifth harmonic to make the amplitude ratio A 5 to be greater than 20% and 80% or less, and

wherein the computer processor sets the phase difference φ 5 to make a phase of the fifth harmonic with respect to the fundamental wave to be a leading phase, and to make the phase difference φ 5 to be 80° or more and 106° or less.

2 . The processing device according to claim 1 ,

wherein the computer processor sets the phase difference φ 5 to make the phase difference φ 5 to be greater than 90° and 106° or less.

3 . The processing device according to claim 1 , further comprising

the computer processor generates the excitation waveform based on the waveform information,

wherein the computer processor supplies an excitation signal based on the excitation waveform generated based on the waveform information to the motor.

4 . The processing device according to claim 2 , further comprising

the computer processor generates the excitation waveform based on the waveform information,

wherein the computer processor supplies an excitation signal based on the excitation waveform generated based on the waveform information to the motor.

5 . The processing device according to claim 1 ,

wherein the motor is an IPM (Interior Permanent Magnet) motor.

6 . The processing device according to claim 2 ,

wherein the motor is an IPM (Interior Permanent Magnet) motor.

7 . The processing device according to claim 3 ,

wherein the motor is an IPM (Interior Permanent Magnet) motor.

8 . The processing device according to claim 4 ,

wherein the motor is an IPM (Interior Permanent Magnet) motor.

9 . The processing device according to claim 1 ,