Five-phase motor pulse width modulation method and device and terminal equipment

A technology of pulse width modulation and time modulation, applied in motor control, motor generator control, AC motor control, etc., can solve the problem that the third harmonic voltage cannot be injected

Active Publication Date: 2020-03-27
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The embodiment of the present application provides a five-phase motor pulse width modulation method, device and terminal equipment, which can solve the problem that the third harmonic voltage cannot be injected into the five-phase motor control

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  • Five-phase motor pulse width modulation method and device and terminal equipment
  • Five-phase motor pulse width modulation method and device and terminal equipment
  • Five-phase motor pulse width modulation method and device and terminal equipment

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Embodiment Construction

[0073] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0074] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of features, wholes, steps, operations, elements, components and / or collections thereof.

[0075] It should...

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Abstract

The invention is applicable to the technical field of motors, and provides a five-phase motor pulse width modulation method and device and terminal equipment. The five-phase motor pulse width modulation method comprises the following steps: acquiring a fundamental wave reference voltage vector and a third harmonic reference voltage vector; determining a preset number of fundamental wave vectors and a preset number of third harmonic vectors according to the positions of the fundamental wave reference voltage vectors in the fundamental wave voltage space vector diagram and the positions of the third harmonic reference voltage vectors in the third harmonic voltage space vector diagram; determining a fundamental wave modulation vector, a third harmonic modulation vector and modulation time corresponding to each fundamental wave modulation vector according to the fundamental wave reference voltage vector, the third harmonic reference voltage vector, the fundamental wave vector, the third harmonic vector and each action time; and modulating the fundamental wave reference voltage vector and the third harmonic reference voltage vector based on the fundamental wave modulation vector, the third harmonic modulation vector and the modulation time. The problem that third harmonic voltage cannot be injected into five-phase motor control is solved.

Description

technical field [0001] The present application belongs to the field of motor technology, and in particular relates to a pulse width modulation method, device and terminal equipment for a five-phase motor. Background technique [0002] Permanent magnet synchronous motors have the advantages of high power density, high efficiency, and high torque density, and have been widely used in aerospace, industrial automation, and electric vehicles. Although three-phase permanent magnet synchronous motors are mainly used in industry now, five-phase permanent magnet synchronous motors are gradually becoming a research hotspot due to their excellent performance. Because the angle between two adjacent vectors in the vector pulse width modulation of a five-phase motor is 36°, while the angle between two adjacent vectors in a three-phase motor is 60°, during the modulation process, the five-phase permanent magnet synchronous The motor has smaller torque ripple, and the five-phase permanent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P6/08H02P27/12
CPCH02P6/08H02P21/00H02P27/12H02P2207/05
Inventor 龙凌辉孙天夫
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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