Method, system, equipment and medium for suppressing harmonic current of permanent magnet synchronous motor

A permanent magnet synchronous motor, harmonic current technology, applied in control systems, motor control, AC motor control and other directions, can solve problems such as increasing copper consumption, reducing equipment electromagnetic compatibility performance, and adverse effects on transmission systems, achieving harmonic The effect of reducing the current and improving the load capacity

Active Publication Date: 2022-07-05
佛山仙湖实验室
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Harmonic current will have adverse effects on the transmission system, increase copper consumption, reduce the electromagnetic compatibility performance of the equipment, and seriously affect the performance of the AC transmission system

Method used

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  • Method, system, equipment and medium for suppressing harmonic current of permanent magnet synchronous motor
  • Method, system, equipment and medium for suppressing harmonic current of permanent magnet synchronous motor
  • Method, system, equipment and medium for suppressing harmonic current of permanent magnet synchronous motor

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Embodiment Construction

[0048] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0049] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure, as recited in the appended claims.

[0050] According to a first aspect of the present invention, a method for suppressing harmonic current of a permanent magnet synchronous motor is provi...

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Abstract

The invention relates to the technical field of harmonic current suppression, and discloses a method, system, equipment and medium for suppressing harmonic current of a permanent magnet synchronous motor. The method includes: obtaining the target speed and target power of the vehicle, sampling the DC input voltage, the AC input voltage and the input harmonic current of the motor input terminal; calculating the SVPWM modulation ratio, extracting the stator harmonic current from the input harmonic current; judging the current harmonic Whether the distortion rate is in the distortion range; output the modulation signal to the inverter, start the filter module to filter the input harmonic current, determine the power supply mode of the car power according to the target power of the car, and control the car power supply to respond with the selected power supply mode according to the SVPWM modulation ratio The target power of the car. The invention responds to the target power and target speed by eliminating the harmonic current and selecting the corresponding power supply mode according to the current modulation ratio, thereby improving the load-carrying capacity of the inverter and reducing the harmonic current of the inverter.

Description

technical field [0001] The invention relates to the technical field of harmonic current suppression, in particular to a method, system, equipment and medium for suppressing harmonic current of a permanent magnet synchronous motor. Background technique [0002] Permanent magnet synchronous motors have the advantages of high efficiency and high power density, and are widely used in the field of fuel cell vehicles, such as hydrogen fuel cells and lithium battery hybrid vehicles. [0003] For permanent magnet synchronous motor, the harmonics it contains can be divided into time harmonics and space harmonics. Time harmonics refer to the harmonics caused by the dead time of the controllable device and the voltage drop when the IGBT, diode and other components are turned on in the process of using the inverter to supply power to the permanent magnet synchronous motor. Space harmonics refer to the fact that the permanent magnet synchronous motor contains a certain harmonic componen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P27/08H02M1/12H02M7/5395H02P25/022B60L15/20
CPCH02P27/08H02M1/12H02M7/5395H02P25/022B60L15/20H02P2207/05Y02T10/72
Inventor 陈静肖纯刘孟杰田韶鹏张猛杨牧高嘉伟游思一郎
Owner 佛山仙湖实验室
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