Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Permanent magnet synchronous motor control method and device

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of motor control, motor generator control, AC motor control, etc., can solve the problem that the position sensorless control technology cannot be applied to zero-speed start and low-speed operation, and achieve stability and reliability running effect

Pending Publication Date: 2022-06-03
无锡蓝海华腾技术有限公司
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a permanent magnet synchronous motor control method and device, which can solve the problem that the position sensorless control technology cannot be applied to zero-speed start-up and low-speed operation conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Permanent magnet synchronous motor control method and device
  • Permanent magnet synchronous motor control method and device
  • Permanent magnet synchronous motor control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] In the following description, for the purpose of illustration rather than limitation, specific details, such as specific system structures and technologies, are provided for a thorough understanding of the embodiments of the present application. However, it will be apparent to those 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.

[0069] It is to be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described feature, integer, step, operation, element and / or component, but does not exclude one or more other The presence or addition of features, integers, steps, operations, elements, components and / or sets thereof.

[0070] It will a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention is suitable for the technical field of motor control, and provides a permanent magnet synchronous motor control method and device.The permanent magnet synchronous motor control method comprises the steps that firstly, stator current of a motor is obtained, and the stator current is any two-phase current in three-phase current of a motor stator; cLARKE transformation is carried out on the stator current to obtain a current component of the stator current in a two-phase static coordinate system, the rotor position and the rotor speed of the motor are calculated according to the current component, the voltage component and motor body parameters, and the motor body parameters comprise stator inductance, stator phase resistance and a counter electromotive force constant; the voltage component is the voltage component of the stator voltage under the two-phase static coordinate system. And finally generating a motor control signal according to the rotor position and the rotor speed, wherein the motor control signal is used for controlling the motor to rotate. According to the method, the position and the rotating speed of the rotor can be obtained under the condition that a physical rotor position sensor is not installed, and stable and reliable operation of the permanent magnet synchronous motor within the full-speed range can be achieved.

Description

technical field [0001] The application belongs to the technical field of motor control, and in particular, relates to a control method and device for a permanent magnet synchronous motor. Background technique [0002] The electro-hydraulic power steering system of an electric vehicle adopts an electro-hydraulic pump assembly and a corresponding motor driver. The motor is driven by the motor driver to rotate and run to convert electrical energy into mechanical energy, and then the mechanical energy is converted into hydraulic power through the hydraulic oil pump to assist the vehicle in steering. [0003] The permanent magnet synchronous motor uses permanent magnets to provide excitation, which has the characteristics of low power loss, high power density and high reliability. It forms the permanent magnet synchronous motor electric hydraulic pump assembly with the hydraulic oil pump, and has been widely used in electric vehicle electric hydraulic power steering system. . Th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/18H02P21/24H02P21/04H02P25/022
CPCH02P21/18H02P21/24H02P21/04H02P25/022H02P2207/05Y02T10/72
Inventor 左文全王俊冯文杰翟国建
Owner 无锡蓝海华腾技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com