Processing device, electric-powered vehicle, processing method, and program
AssigneeNippon Steel Corporation
InventorsMasahito Kamikawabata, Rei Honma
Life of this patent
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Abstract
A processing device (400) sets an amplitude (I5) of a fifth harmonic to make an amplitude ratio (A5) to be greater than 20% and 80% or less. Further, the processing device (400) sets a phase difference (φ5) 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 (φ5) to be 80° or more and 106° or less.
Claims18
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 A5 and a phase difference φ5,
- wherein the amplitude ratio A5 expresses, on percentage, a ratio of an amplitude I5 of the fifth harmonic to an amplitude I0 of the fundamental wave,
- wherein the phase difference φ5 is a phase difference between the fundamental wave and the fifth harmonic,
- wherein the computer processor sets the amplitude I5 of the fifth harmonic to make the amplitude ratio A5 to be greater than 20% and 80% or less, and
- wherein the computer processor sets the phase difference φ5 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 φ5 to be 80° or more and 106° or less.
A processing method of 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 method comprising:
- setting 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 processing method comprises setting the harmonic information,
- wherein the harmonic information includes an amplitude ratio A5 and a phase difference φ5,
- wherein the amplitude ratio A5 expresses, on percentage, a ratio of an amplitude I5 of the fifth harmonic to an amplitude I0 of the fundamental wave,
- wherein the phase difference φ5 is a phase difference between the fundamental wave and the fifth harmonic,
- wherein the processing method comprises setting the amplitude I5 of the fifth harmonic to make the amplitude ratio A5 to be greater than 20% and 80% or less, and
- wherein the processing method comprises setting the phase difference φ5 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 φ5 to be 80° or more and 106° or less.
A non-transitory computer-readable storage medium recording a program, executable by a computer processor including processing circuitry, for causing a computer to generate an excitation waveform being a time waveform of an excitation signal that is supplied to a stator coil of a motor, the program causing a computer to execute:
- setting 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 program executes setting the harmonic information,
- wherein the harmonic information includes an amplitude ratio A5 and a phase difference φ5,
- wherein the amplitude ratio A5 expresses, on percentage, a ratio of an amplitude I5 of the fifth harmonic to an amplitude I0 of the fundamental wave,
- wherein the phase difference φ5 is a phase difference between the fundamental wave and the fifth harmonic,
- wherein the program executes setting the amplitude I5 of the fifth harmonic to make the amplitude ratio A5 to be greater than 20% and 80% or less, and
- wherein the program executes setting the phase difference φ5 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 φ5 to be 80° or more and 106° or less.
Dependencies are inferred from the claim text.